Articles | Volume 18, issue 6
https://doi.org/10.5194/cp-18-1475-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-18-1475-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| Highlight paper
| 
29 Jun 2022
Research article | Highlight paper |
| 29 Jun 2022
| 29 Jun 2022
The 852/3 CE Mount Churchill eruption: examining the potential climatic and societal impacts and the timing of the Medieval Climate Anomaly in the North Atlantic region
Department of Geography, Durham University, Durham, DH1 3LE, UK
Gill Plunkett
Archaeology & Palaeoecology, School of Natural and Built Environment, Queen's University Belfast, Belfast, BT7 1NN, UK
Britta J. L. Jensen
Earth and Atmospheric Sciences, Faculty of Science, University of Alberta, Edmonton, Alberta, T6G 2E3, Canada
Thomas J. Aubry
Department of Geography, University of Cambridge, Cambridge, UK
Sidney Sussex College, Cambridge, CB2 3HU, UK
Christophe Corona
Geolab, Université Clermont Auvergne, CNRS, 63000, Clermont-Ferrand, France
Institute for Environmental Sciences, University of Geneva, Geneva, 1205, Switzerland
Woon Mi Kim
Climate and Environmental Physics, Physics Institute, University of Bern, Bern, 3012, Switzerland
Oeschger Centre for Climate Change Research, University of Bern, Bern, 3012, Switzerland
Matthew Toohey
Institute of Space and Atmospheric Studies, University of Saskatchewan, Saskatoon, S7N 5E2, Canada
Michael Sigl
Climate and Environmental Physics, Physics Institute, University of Bern, Bern, 3012, Switzerland
Oeschger Centre for Climate Change Research, University of Bern, Bern, 3012, Switzerland
Markus Stoffel
Institute for Environmental Sciences, University of Geneva, Geneva, 1205, Switzerland
Department of Earth Sciences, University of Geneva, Geneva, 1205, Switzerland
Department F.-A. Forel for Environmental and Aquatic Sciences, University of Geneva, Geneva, 1205, Switzerland
Kevin J. Anchukaitis
School of Geography, Development, and Environment and Laboratory of Tree-Ring Research, University of Arizona, Tucson, AZ 85721, USA
Christoph Raible
Climate and Environmental Physics, Physics Institute, University of Bern, Bern, 3012, Switzerland
Oeschger Centre for Climate Change Research, University of Bern, Bern, 3012, Switzerland
Matthew S. M. Bolton
Earth and Atmospheric Sciences, Faculty of Science, University of Alberta, Edmonton, Alberta, T6G 2E3, Canada
Joseph G. Manning
Department of History, Yale University, New Haven, CT 06520, USA
Timothy P. Newfield
Department of History, Georgetown University, Washington DC, 20057, USA
Department of Biology, Georgetown University, Washington DC, 20057, USA
Nicola Di Cosmo
Institute for Advanced Study, Princeton, NJ 08540, USA
Francis Ludlow
Department of History and Trinity Centre for Environmental Humanities, Trinity College Dublin, Dublin, D02 PN40, Ireland
Conor Kostick
Department of History and Trinity Centre for Environmental Humanities, Trinity College Dublin, Dublin, D02 PN40, Ireland
Zhen Yang
Department of History and Trinity Centre for Environmental Humanities, Trinity College Dublin, Dublin, D02 PN40, Ireland
Lisa Coyle McClung
Archaeology & Palaeoecology, School of Natural and Built Environment, Queen's University Belfast, Belfast, BT7 1NN, UK
Matthew Amesbury
Geography, College of Life and Environmental Sciences, University of Exeter, Exeter, EX4 4RJ, UK
Alistair Monteath
Earth and Atmospheric Sciences, Faculty of Science, University of Alberta, Edmonton, Alberta, T6G 2E3, Canada
Paul D. M. Hughes
School of Geography and Environmental Science, University of Southampton, Southampton, SO17 1BJ, UK
Pete G. Langdon
School of Geography and Environmental Science, University of Southampton, Southampton, SO17 1BJ, UK
Dan Charman
Geography, College of Life and Environmental Sciences, University of Exeter, Exeter, EX4 4RJ, UK
Robert Booth
Earth and Environmental Science Department, Lehigh University, PA 18015, USA
Kimberley L. Davies
Institute for Modelling Socio-Environmental Transitions, Bournemouth University, Bournemouth, BH12 5BB, UK
Antony Blundell
School of Geography, University of Leeds, Leeds, LS2 9JT, UK
Graeme T. Swindles
Geography, School of Natural and Built Environment, Queen's University Belfast, Belfast, BT7 1NN, UK
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Evelien J. C. van Dijk, Christoph C. Raible, Michael Sigl, Johann Jungclaus, and Heinz Wanner
Clim. Past Discuss., https://doi.org/10.5194/cp-2024-79, https://doi.org/10.5194/cp-2024-79, 2024
Preprint under review for CP
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The temperature in the past 4000 years consisted of warm and cold periods, initiated by external forcing. But, these periods are not consistent through time and space. We use climate models and reconstructions to study to which extent the periods are reflected in the European climate. We find that on local scales, the chaotic nature of the climate system is larger than the external forcing. This study shows that these periods have to be used very carefully when studying a local site.
Magali Verkerk, Thomas J. Aubry, Christopher Smith, Peter O. Hopcroft, Michael Sigl, Jessica E. Tierney, Kevin Anchukaitis, Matthew Osman, Anja Schmidt, and Matthew Toohey
EGUsphere, https://doi.org/10.5194/egusphere-2024-3635, https://doi.org/10.5194/egusphere-2024-3635, 2024
This preprint is open for discussion and under review for Climate of the Past (CP).
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Large volcanic eruptions can trigger global cooling, affecting human societies. Using ice-core records and simple climate model to simulate volcanic effect over the last 8500 years, we show that volcanic eruptions cool climate by 0.12 °C on average. By comparing model results with temperature recorded by tree rings over the last 1000 years, we demonstrate that our models can predict the large-scale cooling caused by volcanic eruptions, and can be used in case of large eruption in the future.
Zhen Yang and Francis Ludlow
Clim. Past Discuss., https://doi.org/10.5194/cp-2024-77, https://doi.org/10.5194/cp-2024-77, 2024
Preprint under review for CP
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This research examines the climatic and societal impacts of volcanic eruptions in the Western Han Dynasty (206 BCE–8 CE). Statistically, the frequency of relevant climate disasters (e.g., drought, cold) and metrics of societal impacts (e.g., vagrancy) increased following volcanic eruptions. A comparative study of 180–150 BCE and 60–30 BCE reveals that the shortcomings in perceptions of human-nature relationships and the over-reliance on agriculture reduced society’s resilience to calamities.
Sujan Khanal, Matthew Toohey, Adam Bourassa, C. Thomas McElroy, Christopher Sioris, and Kaley A. Walker
EGUsphere, https://doi.org/10.5194/egusphere-2024-3286, https://doi.org/10.5194/egusphere-2024-3286, 2024
This preprint is open for discussion and under review for Atmospheric Measurement Techniques (AMT).
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Measurements of stratospheric aerosol from the MAESTRO instrument are compared to other measurements to assess their scientific value. We find that medians of MAESTRO measurements binned by month and latitude show reasonable correlation with other data sets, with notable increases after volcanic eruptions, and that biases in the data can be alleviated through a simple correction technique. Used with care, MAESTRO aerosol measurements provide information that can complement other data sets.
Matthew Toohey, Yue Jia, Sujan Khanal, and Susann Tegtmeier
EGUsphere, https://doi.org/10.5194/egusphere-2024-2400, https://doi.org/10.5194/egusphere-2024-2400, 2024
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The climate impact of volcanic eruptions depends in part on how long aerosols spend in the stratosphere. We develop a conceptual model for stratospheric aerosol lifetime in terms of production and decay timescales, as well as a lag between injection and decay. We find residence time depends strongly on injection height in the lower stratosphere. We show that the lifetime of stratospheric aerosol from the 1991 Pinatubo eruption is around 22 months, significantly longer than commonly reported.
Onno Doensen, Martina Messmer, Christoph C. Raible, and Woon Mi Kim
EGUsphere, https://doi.org/10.5194/egusphere-2024-2731, https://doi.org/10.5194/egusphere-2024-2731, 2024
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Extratropical cyclones are crucial systems in the Mediterranean. While extensively studied, their late Holocene variability is poorly understood. Using a climate model spanning 3350-years, we find Mediterranean cyclones show significant multi-decadal variability. Extreme cyclones tend to be more extreme in the central Mediterranean in terms of wind speed. Our work creates a reference baseline to better understand the impact of climate change on Mediterranean cyclones.
Mahesh Kovilakam, Larry Thomason, Magali Verkerk, Thomas Aubry, and Travis Knepp
EGUsphere, https://doi.org/10.5194/egusphere-2024-2409, https://doi.org/10.5194/egusphere-2024-2409, 2024
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The Global Space-based Stratospheric Aerosol Climatology (GloSSAC) is essential for understanding and modeling the climatic impacts of stratospheric aerosols, comprising data from various space-based measurements. Here, we examine and evaluate the Ozone Mapping and Profiler Suite limb profiler (OMPS) against other datasets, particularly SAGE III/ISS, to discern differences and explore the applicability of OMPS data within the GloSSAC framework.
Moritz Günther, Hauke Schmidt, Claudia Timmreck, and Matthew Toohey
Atmos. Chem. Phys., 24, 7203–7225, https://doi.org/10.5194/acp-24-7203-2024, https://doi.org/10.5194/acp-24-7203-2024, 2024
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Stratospheric aerosol has been shown to cause pronounced cooling in the tropical Indian and western Pacific oceans. Using a climate model, we show that this arises from enhanced meridional energy export via the stratosphere. The aerosol causes stratospheric heating and thus an acceleration of the Brewer–Dobson circulation that accomplishes this transport. Our findings highlight the importance of circulation adjustments and surface perspectives on forcing for understanding temperature responses.
Jérôme Lopez-Saez, Christophe Corona, Lenka Slamova, Matthias Huss, Valérie Daux, Kurt Nicolussi, and Markus Stoffel
Clim. Past, 20, 1251–1267, https://doi.org/10.5194/cp-20-1251-2024, https://doi.org/10.5194/cp-20-1251-2024, 2024
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Glaciers in the European Alps have been retreating since the 1850s. Monitoring glacier mass balance is vital for understanding global changes, but only a few glaciers have long-term data. This study aims to reconstruct the mass balance of the Silvretta Glacier in the Swiss Alps using stable isotopes and tree ring proxies. Results indicate increased glacier mass until the 19th century, followed by a sharp decline after the Little Ice Age with accelerated losses due to anthropogenic warming.
Lauren R. Marshall, Anja Schmidt, Andrew P. Schurer, Nathan Luke Abraham, Lucie J. Lücke, Rob Wilson, Kevin Anchukaitis, Gabriele Hegerl, Ben Johnson, Bette L. Otto-Bliesner, Esther C. Brady, Myriam Khodri, and Kohei Yoshida
EGUsphere, https://doi.org/10.5194/egusphere-2024-1322, https://doi.org/10.5194/egusphere-2024-1322, 2024
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Large volcanic eruptions have caused temperature deviations over the past 1000 years, however climate model results and reconstructions of surface cooling using tree-rings do not match. We explore this mismatch using the latest models and find a better match to tree-ring reconstructions for some eruptions. Our results show that the way in which eruptions are simulated in models matters for the comparison to tree-rings, particularly regarding the spatial spread of volcanic aerosol.
Zhihong Zhuo, Herman F. Fuglestvedt, Matthew Toohey, and Kirstin Krüger
Atmos. Chem. Phys., 24, 6233–6249, https://doi.org/10.5194/acp-24-6233-2024, https://doi.org/10.5194/acp-24-6233-2024, 2024
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This work simulated volcanic eruptions with varied eruption source parameters under different initial conditions with a fully coupled Earth system model. We show that initial atmospheric conditions control the meridional distribution of volcanic volatiles and modulate volcanic forcing and subsequent climate and environmental impacts of tropical and Northern Hemisphere extratropical eruptions. This highlights the potential for predicting these impacts as early as the first post-eruption month.
Emmanuele Russo, Jonathan Buzan, Sebastian Lienert, Guillaume Jouvet, Patricio Velasquez Alvarez, Basil Davis, Patrick Ludwig, Fortunat Joos, and Christoph C. Raible
Clim. Past, 20, 449–465, https://doi.org/10.5194/cp-20-449-2024, https://doi.org/10.5194/cp-20-449-2024, 2024
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We present a series of experiments conducted for the Last Glacial Maximum (~21 ka) over Europe using the regional climate Weather Research and Forecasting model (WRF) at convection-permitting resolutions. The model, with new developments better suited to paleo-studies, agrees well with pollen-based climate reconstructions. This agreement is improved when considering different sources of uncertainty. The effect of convection-permitting resolutions is also assessed.
Julie Christin Schindlbeck-Belo, Matthew Toohey, Marion Jegen, Steffen Kutterolf, and Kira Rehfeld
Earth Syst. Sci. Data, 16, 1063–1081, https://doi.org/10.5194/essd-16-1063-2024, https://doi.org/10.5194/essd-16-1063-2024, 2024
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Volcanic forcing of climate resulting from major explosive eruptions is a dominant natural driver of past climate variability. To support model studies of the potential impacts of explosive volcanism on climate variability across timescales, we present an ensemble reconstruction of volcanic stratospheric sulfur injection over the last 140 000 years that is based primarily on tephra records.
Woon Mi Kim, Santos J. González-Rojí, Isla R. Simpson, and Daniel Kennedy
EGUsphere, https://doi.org/10.5194/egusphere-2024-252, https://doi.org/10.5194/egusphere-2024-252, 2024
Preprint archived
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Woon Mi Kim, Santos J. González-Rojí, and Christoph C. Raible
Clim. Past, 19, 2511–2533, https://doi.org/10.5194/cp-19-2511-2023, https://doi.org/10.5194/cp-19-2511-2023, 2023
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In this study, we investigate circulation patterns associated with Mediterranean droughts during the last millennium using global climate simulations. Different circulation patterns driven by internal interactions in the climate system contribute to the occurrence of droughts in the Mediterranean. The detected patterns are different between the models, and this difference can be a potential source of uncertainty in model–proxy comparison and future projections of Mediterranean droughts.
Jonathan King, Jessica Tierney, Matthew Osman, Emily J. Judd, and Kevin J. Anchukaitis
Geosci. Model Dev., 16, 5653–5683, https://doi.org/10.5194/gmd-16-5653-2023, https://doi.org/10.5194/gmd-16-5653-2023, 2023
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Paleoclimate data assimilation is a useful method that allows researchers to combine climate models with natural archives of past climates. However, it can be difficult to implement in practice. To facilitate this method, we present DASH, a MATLAB toolbox. The toolbox provides routines that implement common steps of paleoclimate data assimilation, and it can be used to implement assimilations for a wide variety of time periods, spatial regions, data networks, and analytical algorithms.
Eric Samakinwa, Christoph C. Raible, Ralf Hand, Andrew R. Friedman, and Stefan Brönnimann
Clim. Past Discuss., https://doi.org/10.5194/cp-2023-67, https://doi.org/10.5194/cp-2023-67, 2023
Publication in CP not foreseen
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In this study, we nudged a stand-alone ocean model MPI-OM to proxy-reconstructed SST. Based on these model simulations, we introduce new estimates of the AMOC variations during the period 1450–1780 through a 10-member ensemble simulation with a novel nudging technique. Our approach reaffirms the known mechanisms of AMOC variability and also improves existing knowledge of the interplay between the AMOC and the NAO during the AMOC's weak and strong phases.
Nicolas Steeb, Virginia Ruiz-Villanueva, Alexandre Badoux, Christian Rickli, Andrea Mini, Markus Stoffel, and Dieter Rickenmann
Earth Surf. Dynam., 11, 487–509, https://doi.org/10.5194/esurf-11-487-2023, https://doi.org/10.5194/esurf-11-487-2023, 2023
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Various models have been used in science and practice to estimate how much large wood (LW) can be supplied to rivers. This contribution reviews the existing models proposed in the last 35 years and compares two of the most recent spatially explicit models by applying them to 40 catchments in Switzerland. Differences in modelling results are discussed, and results are compared to available observations coming from a unique database.
Lucie J. Lücke, Andrew P. Schurer, Matthew Toohey, Lauren R. Marshall, and Gabriele C. Hegerl
Clim. Past, 19, 959–978, https://doi.org/10.5194/cp-19-959-2023, https://doi.org/10.5194/cp-19-959-2023, 2023
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Evidence from tree rings and ice cores provides incomplete information about past volcanic eruptions and the Sun's activity. We model past climate with varying solar and volcanic scenarios and compare it to reconstructed temperature. We confirm that the Sun's influence was small and that uncertain volcanic activity can strongly influence temperature shortly after the eruption. On long timescales, independent data sources closely agree, increasing our confidence in understanding of past climate.
Alistair J. Monteath, Matthew S. M. Bolton, Jordan Harvey, Marit-Solveig Seidenkrantz, Christof Pearce, and Britta Jensen
Geochronology, 5, 229–240, https://doi.org/10.5194/gchron-5-229-2023, https://doi.org/10.5194/gchron-5-229-2023, 2023
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Accurately dating ocean cores is challenging because the radiocarbon age of water masses varies substantially. We identify ash fragments from eruptions more than 4000 km from their source and use these time markers to develop a new age–depth model for an ocean core in Placentia Bay, North Atlantic. Our results show that the radiocarbon age of waters masses in the bay varied considerably during the last 10 000 years and highlight the potential of using ultra-distal ash deposits in this region.
Jonathan Robert Buzan, Emmanuele Russo, Woon Mi Kim, and Christoph C. Raible
EGUsphere, https://doi.org/10.5194/egusphere-2023-324, https://doi.org/10.5194/egusphere-2023-324, 2023
Preprint archived
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Paleoclimate is used to test climate models to verify that simulations accurately project both future and past climate states. We present fully coupled climate sensitivity simulations of Preindustrial, Last Glacial Maximum, and the Quaternary climate periods. We show distinct climate states derived from non-linear responses to ice sheet heights and orbits. The implication is that as paleo proxy data become more reliable, they may constrain the specific climate states produced by climate models.
Ram Singh, Kostas Tsigaridis, Allegra N. LeGrande, Francis Ludlow, and Joseph G. Manning
Clim. Past, 19, 249–275, https://doi.org/10.5194/cp-19-249-2023, https://doi.org/10.5194/cp-19-249-2023, 2023
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This work is a modeling effort to investigate the hydroclimatic impacts of a volcanic
quartetduring 168–158 BCE over the Nile River basin in the context of Ancient Egypt's Ptolemaic era (305–30 BCE). The model simulated a robust surface cooling (~ 1.0–1.5 °C), suppressing the African monsoon (deficit of > 1 mm d−1 over East Africa) and agriculturally vital Nile summer flooding. Our result supports the hypothesized relation between volcanic eruptions, hydroclimatic shocks, and societal impacts.
Benjamin J. Stoker, Martin Margold, John C. Gosse, Alan J. Hidy, Alistair J. Monteath, Joseph M. Young, Niall Gandy, Lauren J. Gregoire, Sophie L. Norris, and Duane Froese
The Cryosphere, 16, 4865–4886, https://doi.org/10.5194/tc-16-4865-2022, https://doi.org/10.5194/tc-16-4865-2022, 2022
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The Laurentide Ice Sheet was the largest ice sheet to grow and disappear in the Northern Hemisphere during the last glaciation. In northwestern Canada, it covered the Mackenzie Valley, blocking the migration of fauna and early humans between North America and Beringia and altering the drainage systems. We reconstruct the timing of ice sheet retreat in this region and the implications for the migration of early humans into North America, the drainage of glacial lakes, and past sea level rise.
Heli Huhtamaa, Markus Stoffel, and Christophe Corona
Clim. Past, 18, 2077–2092, https://doi.org/10.5194/cp-18-2077-2022, https://doi.org/10.5194/cp-18-2077-2022, 2022
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Tree-ring data and written sources from northern Fennoscandia reveal that large 17th century eruptions had considerable climatic, agricultural, and socioeconomic impacts far away from the eruption locations. Yet, micro-regional investigation shows that the human consequences were commonly indirect, as various factors, like agro-ecosystems, resource availability, institutions, and personal networks, dictated how the volcanic cold pulses and related crop failures materialized on a societal level.
David J. Lowe, Peter M. Abbott, Takehiko Suzuki, and Britta J. L. Jensen
Hist. Geo Space. Sci., 13, 93–132, https://doi.org/10.5194/hgss-13-93-2022, https://doi.org/10.5194/hgss-13-93-2022, 2022
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The Commission on Tephrochronology (COT), formed in 1961, comprises geoscientists who characterize, map, and date tephra (volcanic ash) layers and use them as stratigraphic linking and dating tools in geological, palaeoenvironmental, and archaeological research. We review COT's origins and growth and show how its leadership and activities – hosting meetings, supporting ECRs, developing new analytical and dating methods, and publishing volumes – have strongly influenced tephrochronology globally.
Michael Sigl, Matthew Toohey, Joseph R. McConnell, Jihong Cole-Dai, and Mirko Severi
Earth Syst. Sci. Data, 14, 3167–3196, https://doi.org/10.5194/essd-14-3167-2022, https://doi.org/10.5194/essd-14-3167-2022, 2022
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Volcanism is a key driver of climate. Based on ice cores from Greenland and Antarctica, we reconstruct its climate impact potential over the Holocene. By aligning records on a well-dated chronology from Antarctica, we resolve long-standing inconsistencies in the dating of past volcanic eruptions. We reconstruct 850 eruptions (which, in total, injected 7410 Tg of sulfur in the stratosphere) and estimate how they changed the opacity of the atmosphere, a prerequisite for climate model simulations.
Patricio Velasquez, Martina Messmer, and Christoph C. Raible
Clim. Past, 18, 1579–1600, https://doi.org/10.5194/cp-18-1579-2022, https://doi.org/10.5194/cp-18-1579-2022, 2022
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We investigate the sensitivity of the glacial Alpine hydro-climate to northern hemispheric and local ice-sheet changes. We perform sensitivity simulations of up to 2 km horizontal resolution over the Alps for glacial periods. The findings demonstrate that northern hemispheric and local ice-sheet topography are important role in regulating the Alpine hydro-climate and permits a better understanding of the Alpine precipitation patterns at glacial times.
Markus Stoffel, Christophe Corona, Francis Ludlow, Michael Sigl, Heli Huhtamaa, Emmanuel Garnier, Samuli Helama, Sébastien Guillet, Arlene Crampsie, Katrin Kleemann, Chantal Camenisch, Joseph McConnell, and Chaochao Gao
Clim. Past, 18, 1083–1108, https://doi.org/10.5194/cp-18-1083-2022, https://doi.org/10.5194/cp-18-1083-2022, 2022
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The mid-17th century saw several volcanic eruptions, deteriorating climate, political instability, and famine in Europe, China, and Japan. We analyze impacts of the eruptions on climate but also study their socio-political context. We show that an unambiguous distinction of volcanic cooling or wetting from natural climate variability is not straightforward. It also shows that political instability, poor harvest, and famine cannot only be attributed to volcanic climatic impacts.
Emmanuele Russo, Bijan Fallah, Patrick Ludwig, Melanie Karremann, and Christoph C. Raible
Clim. Past, 18, 895–909, https://doi.org/10.5194/cp-18-895-2022, https://doi.org/10.5194/cp-18-895-2022, 2022
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In this study a set of simulations are performed with the regional climate model COSMO-CLM for Europe, for the mid-Holocene and pre-industrial periods. The main aim is to better understand the drivers of differences between models and pollen-based summer temperatures. Results show that a fundamental role is played by spring soil moisture availability. Additionally, results suggest that model bias is not stationary, and an optimal configuration could not be the best under different forcing.
Sam White, Eduardo Moreno-Chamarro, Davide Zanchettin, Heli Huhtamaa, Dagomar Degroot, Markus Stoffel, and Christophe Corona
Clim. Past, 18, 739–757, https://doi.org/10.5194/cp-18-739-2022, https://doi.org/10.5194/cp-18-739-2022, 2022
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This study examines whether the 1600 Huaynaputina volcano eruption triggered persistent cooling in the North Atlantic. It compares previous paleoclimate simulations with new climate reconstructions from natural proxies and historical documents and finds that the reconstructions are consistent with, but do not support, an eruption trigger for persistent cooling. The study also analyzes societal impacts of climatic change in ca. 1600 and the use of historical observations in model–data comparison.
Santos J. González-Rojí, Martina Messmer, Christoph C. Raible, and Thomas F. Stocker
Geosci. Model Dev., 15, 2859–2879, https://doi.org/10.5194/gmd-15-2859-2022, https://doi.org/10.5194/gmd-15-2859-2022, 2022
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Different configurations of physics parameterizations of a regional climate model are tested over southern Peru at fine resolution. The most challenging regions compared to observational data are the slopes of the Andes. Model configurations for Europe and East Africa are not perfectly suitable for southern Peru. The experiment with the Stony Brook University microphysics scheme and the Grell–Freitas cumulus parameterization provides the most accurate results over Madre de Dios.
Davide Zanchettin, Claudia Timmreck, Myriam Khodri, Anja Schmidt, Matthew Toohey, Manabu Abe, Slimane Bekki, Jason Cole, Shih-Wei Fang, Wuhu Feng, Gabriele Hegerl, Ben Johnson, Nicolas Lebas, Allegra N. LeGrande, Graham W. Mann, Lauren Marshall, Landon Rieger, Alan Robock, Sara Rubinetti, Kostas Tsigaridis, and Helen Weierbach
Geosci. Model Dev., 15, 2265–2292, https://doi.org/10.5194/gmd-15-2265-2022, https://doi.org/10.5194/gmd-15-2265-2022, 2022
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This paper provides metadata and first analyses of the volc-pinatubo-full experiment of CMIP6-VolMIP. Results from six Earth system models reveal significant differences in radiative flux anomalies that trace back to different implementations of volcanic forcing. Surface responses are in contrast overall consistent across models, reflecting the large spread due to internal variability. A second phase of VolMIP shall consider both aspects toward improved protocol for volc-pinatubo-full.
Lauren J. Davies, Britta J. L. Jensen, and Darrell S. Kaufman
Geochronology, 4, 121–141, https://doi.org/10.5194/gchron-4-121-2022, https://doi.org/10.5194/gchron-4-121-2022, 2022
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Subarctic and Arctic lake sediments provide key data to understand natural climate variability and future climate change. However, they can be difficult to date accurately and of limited use without a robust chronology. We use volcanic ash deposits from the last ~4000 BP to identify anomalously old radiocarbon ages at Cascade Lake, Alaska. A provisional ~15 000-year Bayesian age model is produced for the lake, and a new location for ash from five Late Holocene eruptions is reported.
Sarah E. Chadburn, Eleanor J. Burke, Angela V. Gallego-Sala, Noah D. Smith, M. Syndonia Bret-Harte, Dan J. Charman, Julia Drewer, Colin W. Edgar, Eugenie S. Euskirchen, Krzysztof Fortuniak, Yao Gao, Mahdi Nakhavali, Włodzimierz Pawlak, Edward A. G. Schuur, and Sebastian Westermann
Geosci. Model Dev., 15, 1633–1657, https://doi.org/10.5194/gmd-15-1633-2022, https://doi.org/10.5194/gmd-15-1633-2022, 2022
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We present a new method to include peatlands in an Earth system model (ESM). Peatlands store huge amounts of carbon that accumulates very slowly but that can be rapidly destabilised, emitting greenhouse gases. Our model captures the dynamic nature of peat by simulating the change in surface height and physical properties of the soil as carbon is added or decomposed. Thus, we model, for the first time in an ESM, peat dynamics and its threshold behaviours that can lead to destabilisation.
Luuk Dorren, Frédéric Berger, Franck Bourrier, Nicolas Eckert, Charalampos Saroglou, Massimiliano Schwarz, Markus Stoffel, Daniel Trappmann, Hans-Heini Utelli, and Christine Moos
Nat. Hazards Earth Syst. Sci. Discuss., https://doi.org/10.5194/nhess-2022-32, https://doi.org/10.5194/nhess-2022-32, 2022
Publication in NHESS not foreseen
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In the daily practice of rockfall hazard analysis, trajectory simulations are used to delimit runout zones. To do so, the expert needs to separate "realistic" from "unrealistic" simulated groups of trajectories. This is often done on the basis of reach probability values. This paper provides a basis for choosing a reach probability threshold value for delimiting the rockfall runout zone, based on recordings and simulations of recent rockfall events at 18 active rockfall sites in Europe.
Gill Plunkett, Michael Sigl, Hans F. Schwaiger, Emma L. Tomlinson, Matthew Toohey, Joseph R. McConnell, Jonathan R. Pilcher, Takeshi Hasegawa, and Claus Siebe
Clim. Past, 18, 45–65, https://doi.org/10.5194/cp-18-45-2022, https://doi.org/10.5194/cp-18-45-2022, 2022
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We report the identification of volcanic ash associated with a sulfate layer in Greenland ice cores previously thought to have been from the Vesuvius 79 CE eruption and which had been used to confirm the precise dating of the Greenland ice-core chronology. We find that the tephra was probably produced by an eruption in Alaska. We show the importance of verifying sources of volcanic signals in ice cores through ash analysis to avoid errors in dating ice cores and interpreting volcanic impacts.
Anne Dallmeyer, Martin Claussen, Stephan J. Lorenz, Michael Sigl, Matthew Toohey, and Ulrike Herzschuh
Clim. Past, 17, 2481–2513, https://doi.org/10.5194/cp-17-2481-2021, https://doi.org/10.5194/cp-17-2481-2021, 2021
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Using the comprehensive Earth system model, MPI-ESM1.2, we explore the global Holocene vegetation changes and interpret them in terms of the Holocene climate change. The model results reveal that most of the Holocene vegetation transitions seen outside the high northern latitudes can be attributed to modifications in the intensity of the global summer monsoons.
Woon Mi Kim, Richard Blender, Michael Sigl, Martina Messmer, and Christoph C. Raible
Clim. Past, 17, 2031–2053, https://doi.org/10.5194/cp-17-2031-2021, https://doi.org/10.5194/cp-17-2031-2021, 2021
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To understand the natural characteristics and future changes of the global extreme daily precipitation, it is necessary to explore the long-term characteristics of extreme daily precipitation. Here, we used climate simulations to analyze the characteristics and long-term changes of extreme precipitation during the past 3351 years. Our findings indicate that extreme precipitation in the past is associated with internal climate variability and regional surface temperatures.
Claudia Timmreck, Matthew Toohey, Davide Zanchettin, Stefan Brönnimann, Elin Lundstad, and Rob Wilson
Clim. Past, 17, 1455–1482, https://doi.org/10.5194/cp-17-1455-2021, https://doi.org/10.5194/cp-17-1455-2021, 2021
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The 1809 eruption is one of the most recent unidentified volcanic eruptions with a global climate impact. We demonstrate that climate model simulations of the 1809 eruption show generally good agreement with many large-scale temperature reconstructions and early instrumental records for a range of radiative forcing estimates. In terms of explaining the spatially heterogeneous and temporally delayed Northern Hemisphere cooling suggested by tree-ring networks, the investigation remains open.
Guoxiong Zheng, Martin Mergili, Adam Emmer, Simon Allen, Anming Bao, Hao Guo, and Markus Stoffel
The Cryosphere, 15, 3159–3180, https://doi.org/10.5194/tc-15-3159-2021, https://doi.org/10.5194/tc-15-3159-2021, 2021
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This paper reports on a recent glacial lake outburst flood (GLOF) event that occurred on 26 June 2020 in Tibet, China. We find that this event was triggered by a debris landslide from a steep lateral moraine. As the relationship between the long-term evolution of the lake and its likely landslide trigger revealed by a time series of satellite images, this case provides strong evidence that it can be plausibly linked to anthropogenic climate change.
John Staunton-Sykes, Thomas J. Aubry, Youngsub M. Shin, James Weber, Lauren R. Marshall, Nathan Luke Abraham, Alex Archibald, and Anja Schmidt
Atmos. Chem. Phys., 21, 9009–9029, https://doi.org/10.5194/acp-21-9009-2021, https://doi.org/10.5194/acp-21-9009-2021, 2021
Patricio Velasquez, Jed O. Kaplan, Martina Messmer, Patrick Ludwig, and Christoph C. Raible
Clim. Past, 17, 1161–1180, https://doi.org/10.5194/cp-17-1161-2021, https://doi.org/10.5194/cp-17-1161-2021, 2021
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This study assesses the importance of resolution and land–atmosphere feedbacks for European climate. We performed an asynchronously coupled experiment that combined a global climate model (~ 100 km), a regional climate model (18 km), and a dynamic vegetation model (18 km). Modelled climate and land cover agree reasonably well with independent reconstructions based on pollen and other paleoenvironmental proxies. The regional climate is significantly influenced by land cover.
Martina Messmer, Santos J. González-Rojí, Christoph C. Raible, and Thomas F. Stocker
Geosci. Model Dev., 14, 2691–2711, https://doi.org/10.5194/gmd-14-2691-2021, https://doi.org/10.5194/gmd-14-2691-2021, 2021
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Sensitivity experiments with the WRF model are run to find an optimal parameterization setup for precipitation around Mount Kenya at a scale that resolves convection (1 km). Precipitation is compared against many weather stations and gridded observational data sets. Both the temporal correlation of precipitation sums and pattern correlations show that fewer nests lead to a more constrained simulation with higher correlation. The Grell–Freitas cumulus scheme obtains the most accurate results.
Michaela I. Hegglin, Susann Tegtmeier, John Anderson, Adam E. Bourassa, Samuel Brohede, Doug Degenstein, Lucien Froidevaux, Bernd Funke, John Gille, Yasuko Kasai, Erkki T. Kyrölä, Jerry Lumpe, Donal Murtagh, Jessica L. Neu, Kristell Pérot, Ellis E. Remsberg, Alexei Rozanov, Matthew Toohey, Joachim Urban, Thomas von Clarmann, Kaley A. Walker, Hsiang-Jui Wang, Carlo Arosio, Robert Damadeo, Ryan A. Fuller, Gretchen Lingenfelser, Christopher McLinden, Diane Pendlebury, Chris Roth, Niall J. Ryan, Christopher Sioris, Lesley Smith, and Katja Weigel
Earth Syst. Sci. Data, 13, 1855–1903, https://doi.org/10.5194/essd-13-1855-2021, https://doi.org/10.5194/essd-13-1855-2021, 2021
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An overview of the SPARC Data Initiative is presented, to date the most comprehensive assessment of stratospheric composition measurements spanning 1979–2018. Measurements of 26 chemical constituents obtained from an international suite of space-based limb sounders were compiled into vertically resolved, zonal monthly mean time series. The quality and consistency of these gridded datasets are then evaluated using a climatological validation approach and a range of diagnostics.
Woon Mi Kim and Christoph C. Raible
Clim. Past, 17, 887–911, https://doi.org/10.5194/cp-17-887-2021, https://doi.org/10.5194/cp-17-887-2021, 2021
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The analysis of the dynamics of western central Mediterranean droughts for 850–2099 CE in the Community Earth System Model indicates that past Mediterranean droughts were driven by the internal variability. This internal variability is more important during the initial years of droughts. During the transition years, the longevity of droughts is defined by the land–atmosphere feedbacks. In the future, this land–atmosphere feedbacks are intensified, causing a constant dryness over the region.
Peter M. Abbott, Gill Plunkett, Christophe Corona, Nathan J. Chellman, Joseph R. McConnell, John R. Pilcher, Markus Stoffel, and Michael Sigl
Clim. Past, 17, 565–585, https://doi.org/10.5194/cp-17-565-2021, https://doi.org/10.5194/cp-17-565-2021, 2021
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Volcanic eruptions are a key source of climatic variability, and greater understanding of their past influence will increase the accuracy of future projections. We use volcanic ash from a 1477 CE Icelandic eruption in a Greenlandic ice core as a temporal fix point to constrain the timing of two eruptions in the 1450s CE and their climatic impact. Despite being the most explosive Icelandic eruption in the last 1200 years, the 1477 CE event had a limited impact on Northern Hemisphere climate.
Margot Clyne, Jean-Francois Lamarque, Michael J. Mills, Myriam Khodri, William Ball, Slimane Bekki, Sandip S. Dhomse, Nicolas Lebas, Graham Mann, Lauren Marshall, Ulrike Niemeier, Virginie Poulain, Alan Robock, Eugene Rozanov, Anja Schmidt, Andrea Stenke, Timofei Sukhodolov, Claudia Timmreck, Matthew Toohey, Fiona Tummon, Davide Zanchettin, Yunqian Zhu, and Owen B. Toon
Atmos. Chem. Phys., 21, 3317–3343, https://doi.org/10.5194/acp-21-3317-2021, https://doi.org/10.5194/acp-21-3317-2021, 2021
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This study finds how and why five state-of-the-art global climate models with interactive stratospheric aerosols differ when simulating the aftermath of large volcanic injections as part of the Model Intercomparison Project on the climatic response to Volcanic forcing (VolMIP). We identify and explain the consequences of significant disparities in the underlying physics and chemistry currently in some of the models, which are problems likely not unique to the models participating in this study.
Andreas Kääb, Tazio Strozzi, Tobias Bolch, Rafael Caduff, Håkon Trefall, Markus Stoffel, and Alexander Kokarev
The Cryosphere, 15, 927–949, https://doi.org/10.5194/tc-15-927-2021, https://doi.org/10.5194/tc-15-927-2021, 2021
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We present a map of rock glacier motion over parts of the northern Tien Shan and time series of surface speed for six of them over almost 70 years.
This is by far the most detailed investigation of this kind available for central Asia.
We detect a 2- to 4-fold increase in rock glacier motion between the 1950s and present, which we attribute to atmospheric warming.
Relative to the shrinking glaciers in the region, this implies increased importance of periglacial sediment transport.
Jakob Zscheischler, Philippe Naveau, Olivia Martius, Sebastian Engelke, and Christoph C. Raible
Earth Syst. Dynam., 12, 1–16, https://doi.org/10.5194/esd-12-1-2021, https://doi.org/10.5194/esd-12-1-2021, 2021
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Compound extremes such as heavy precipitation and extreme winds can lead to large damage. To date it is unclear how well climate models represent such compound extremes. Here we present a new measure to assess differences in the dependence structure of bivariate extremes. This measure is applied to assess differences in the dependence of compound precipitation and wind extremes between three model simulations and one reanalysis dataset in a domain in central Europe.
Emmanuele Russo, Silje Lund Sørland, Ingo Kirchner, Martijn Schaap, Christoph C. Raible, and Ulrich Cubasch
Geosci. Model Dev., 13, 5779–5797, https://doi.org/10.5194/gmd-13-5779-2020, https://doi.org/10.5194/gmd-13-5779-2020, 2020
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The parameter space of the COSMO-CLM RCM is investigated for the Central Asia CORDEX domain using a perturbed physics ensemble (PPE) with different parameter values. Results show that only a subset of model parameters presents relevant changes in model performance and these changes depend on the considered region and variable: objective calibration methods are highly necessary in this case. Additionally, the results suggest the need for calibrating an RCM when targeting different domains.
Patricio Velasquez, Martina Messmer, and Christoph C. Raible
Geosci. Model Dev., 13, 5007–5027, https://doi.org/10.5194/gmd-13-5007-2020, https://doi.org/10.5194/gmd-13-5007-2020, 2020
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This work presents a new bias-correction method for precipitation that considers orographic characteristics, which can be used in studies where the latter strongly changes. The three-step correction method consists of a separation into orographic features, correction of low-intensity precipitation, and application of empirical quantile mapping. Seasonal bias induced by the global climate model is fully corrected. Rigorous cross-validations illustrate the method's applicability and robustness.
Michael Fehlmann, Mario Rohrer, Annakaisa von Lerber, and Markus Stoffel
Atmos. Meas. Tech., 13, 4683–4698, https://doi.org/10.5194/amt-13-4683-2020, https://doi.org/10.5194/amt-13-4683-2020, 2020
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The Thies disdrometer is used to monitor precipitation intensity and its phase and thus may provide valuable information for the management of meteorological and hydrological risks. In this study, we characterize biases of this instrument using common reference instruments at a pre-alpine study site in Switzerland. We find a systematic underestimation of liquid precipitation amounts and suggest possible reasons for and corrections to this bias and relate these findings to other study sites.
Thomas L. Frölicher, Luca Ramseyer, Christoph C. Raible, Keith B. Rodgers, and John Dunne
Biogeosciences, 17, 2061–2083, https://doi.org/10.5194/bg-17-2061-2020, https://doi.org/10.5194/bg-17-2061-2020, 2020
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Climate variations can have profound impacts on marine ecosystems. Here we show that on global scales marine ecosystem drivers such as temperature, pH, O2 and NPP are potentially predictable 3 (at the surface) and more than 10 years (subsurface) in advance. However, there are distinct regional differences in the potential predictability of these drivers. Our study suggests that physical–biogeochemical forecast systems have considerable potential for use in marine resource management.
Victor Brovkin, Stephan Lorenz, Thomas Raddatz, Tatiana Ilyina, Irene Stemmler, Matthew Toohey, and Martin Claussen
Biogeosciences, 16, 2543–2555, https://doi.org/10.5194/bg-16-2543-2019, https://doi.org/10.5194/bg-16-2543-2019, 2019
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Mechanisms of atmospheric CO2 growth by 20 ppm from 6000 BCE to the pre-industrial period are still uncertain. We apply the Earth system model MPI-ESM-LR for two transient simulations of the climate–carbon cycle. An additional process, e.g. carbonate accumulation on shelves, is required for consistency with ice-core CO2 data. Our simulations support the hypothesis that the ocean was a source of CO2 until the late Holocene when anthropogenic CO2 sources started to affect atmospheric CO2.
Olga V. Churakova (Sidorova), Marina V. Fonti, Matthias Saurer, Sébastien Guillet, Christophe Corona, Patrick Fonti, Vladimir S. Myglan, Alexander V. Kirdyanov, Oksana V. Naumova, Dmitriy V. Ovchinnikov, Alexander V. Shashkin, Irina P. Panyushkina, Ulf Büntgen, Malcolm K. Hughes, Eugene A. Vaganov, Rolf T. W. Siegwolf, and Markus Stoffel
Clim. Past, 15, 685–700, https://doi.org/10.5194/cp-15-685-2019, https://doi.org/10.5194/cp-15-685-2019, 2019
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We present a unique dataset of multiple tree-ring and stable isotope parameters, representing temperature-sensitive Siberian ecotones, to assess climatic impacts after six large stratospheric volcanic eruptions at 535, 540, 1257, 1640, 1815, and 1991 CE. Besides the well-documented effects of temperature derived from tree-ring width and latewood density, stable carbon and oxygen isotopes in tree-ring cellulose provide information about moisture and sunshine duration changes after the events.
Virginia Ruiz-Villanueva, Alexandre Badoux, Dieter Rickenmann, Martin Böckli, Salome Schläfli, Nicolas Steeb, Markus Stoffel, and Christian Rickli
Earth Surf. Dynam., 6, 1115–1137, https://doi.org/10.5194/esurf-6-1115-2018, https://doi.org/10.5194/esurf-6-1115-2018, 2018
Christoph C. Raible, Martina Messmer, Flavio Lehner, Thomas F. Stocker, and Richard Blender
Clim. Past, 14, 1499–1514, https://doi.org/10.5194/cp-14-1499-2018, https://doi.org/10.5194/cp-14-1499-2018, 2018
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Extratropical cyclones in winter and their characteristics are investigated in depth for the Atlantic European region from 850 to 2100 CE. During the Common Era, cyclone characteristics show pronounced variations mainly caused by internal variability of the coupled climate system. When anthropogenic forcing becomes dominant, a strong increase of extreme cyclone-related precipitation is found due to thermodynamics, though dynamical processes can play an important role during the last millennium.
Stefan Brönnimann, Jan Rajczak, Erich M. Fischer, Christoph C. Raible, Marco Rohrer, and Christoph Schär
Nat. Hazards Earth Syst. Sci., 18, 2047–2056, https://doi.org/10.5194/nhess-18-2047-2018, https://doi.org/10.5194/nhess-18-2047-2018, 2018
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Heavy precipitation events in Switzerland are expected to become more intense, but the seasonality also changes. Analysing a large set of model simulations, we find that annual maximum rainfall events become less frequent in late summer and more frequent in early summer and early autumn. The seasonality shift is arguably related to summer drying. Results suggest that changes in the seasonal cycle need to be accounted for when preparing for moderately extreme precipitation events.
Claudia Timmreck, Graham W. Mann, Valentina Aquila, Rene Hommel, Lindsay A. Lee, Anja Schmidt, Christoph Brühl, Simon Carn, Mian Chin, Sandip S. Dhomse, Thomas Diehl, Jason M. English, Michael J. Mills, Ryan Neely, Jianxiong Sheng, Matthew Toohey, and Debra Weisenstein
Geosci. Model Dev., 11, 2581–2608, https://doi.org/10.5194/gmd-11-2581-2018, https://doi.org/10.5194/gmd-11-2581-2018, 2018
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The paper describes the experimental design of the Interactive Stratospheric Aerosol Model Intercomparison Project (ISA-MIP). ISA-MIP will improve understanding of stratospheric aerosol processes, chemistry, and dynamics and constrain climate impacts of background aerosol variability and small and large volcanic eruptions. It will help to asses the stratospheric aerosol contribution to the early 21st century global warming hiatus period and the effects from hypothetical geoengineering schemes.
Juan José Gómez-Navarro, Christoph C. Raible, Denica Bozhinova, Olivia Martius, Juan Andrés García Valero, and Juan Pedro Montávez
Geosci. Model Dev., 11, 2231–2247, https://doi.org/10.5194/gmd-11-2231-2018, https://doi.org/10.5194/gmd-11-2231-2018, 2018
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We carry out and compare two high-resolution simulations of the Alpine region in the period 1979–2005. We aim to improve the understanding of the local mechanisms leading to extreme events in this complex region. We compare both simulations to precipitation observations to assess the model performance, and attribute major biases to either model or boundary conditions. Further, we develop a new bias correction technique to remove systematic errors in simulated precipitation for impact studies.
Martin Beniston, Daniel Farinotti, Markus Stoffel, Liss M. Andreassen, Erika Coppola, Nicolas Eckert, Adriano Fantini, Florie Giacona, Christian Hauck, Matthias Huss, Hendrik Huwald, Michael Lehning, Juan-Ignacio López-Moreno, Jan Magnusson, Christoph Marty, Enrique Morán-Tejéda, Samuel Morin, Mohamed Naaim, Antonello Provenzale, Antoine Rabatel, Delphine Six, Johann Stötter, Ulrich Strasser, Silvia Terzago, and Christian Vincent
The Cryosphere, 12, 759–794, https://doi.org/10.5194/tc-12-759-2018, https://doi.org/10.5194/tc-12-759-2018, 2018
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This paper makes a rather exhaustive overview of current knowledge of past, current, and future aspects of cryospheric issues in continental Europe and makes a number of reflections of areas of uncertainty requiring more attention in both scientific and policy terms. The review paper is completed by a bibliography containing 350 recent references that will certainly be of value to scholars engaged in the fields of glacier, snow, and permafrost research.
PAGES Hydro2k Consortium
Clim. Past, 13, 1851–1900, https://doi.org/10.5194/cp-13-1851-2017, https://doi.org/10.5194/cp-13-1851-2017, 2017
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Water availability is fundamental to societies and ecosystems, but our understanding of variations in hydroclimate (including extreme events, flooding, and decadal periods of drought) is limited due to a paucity of modern instrumental observations. We review how proxy records of past climate and climate model simulations can be used in tandem to understand hydroclimate variability over the last 2000 years and how these tools can also inform risk assessments of future hydroclimatic extremes.
Johann H. Jungclaus, Edouard Bard, Mélanie Baroni, Pascale Braconnot, Jian Cao, Louise P. Chini, Tania Egorova, Michael Evans, J. Fidel González-Rouco, Hugues Goosse, George C. Hurtt, Fortunat Joos, Jed O. Kaplan, Myriam Khodri, Kees Klein Goldewijk, Natalie Krivova, Allegra N. LeGrande, Stephan J. Lorenz, Jürg Luterbacher, Wenmin Man, Amanda C. Maycock, Malte Meinshausen, Anders Moberg, Raimund Muscheler, Christoph Nehrbass-Ahles, Bette I. Otto-Bliesner, Steven J. Phipps, Julia Pongratz, Eugene Rozanov, Gavin A. Schmidt, Hauke Schmidt, Werner Schmutz, Andrew Schurer, Alexander I. Shapiro, Michael Sigl, Jason E. Smerdon, Sami K. Solanki, Claudia Timmreck, Matthew Toohey, Ilya G. Usoskin, Sebastian Wagner, Chi-Ju Wu, Kok Leng Yeo, Davide Zanchettin, Qiong Zhang, and Eduardo Zorita
Geosci. Model Dev., 10, 4005–4033, https://doi.org/10.5194/gmd-10-4005-2017, https://doi.org/10.5194/gmd-10-4005-2017, 2017
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Climate model simulations covering the last millennium provide context for the evolution of the modern climate and for the expected changes during the coming centuries. They can help identify plausible mechanisms underlying palaeoclimatic reconstructions. Here, we describe the forcing boundary conditions and the experimental protocol for simulations covering the pre-industrial millennium. We describe the PMIP4 past1000 simulations as contributions to CMIP6 and additional sensitivity experiments.
Matthew Toohey and Michael Sigl
Earth Syst. Sci. Data, 9, 809–831, https://doi.org/10.5194/essd-9-809-2017, https://doi.org/10.5194/essd-9-809-2017, 2017
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Based on ice core sulfate records from Greenland and Antarctica, the eVolv2k database provides volcanic stratospheric sulfur injection estimates from 500 BCE to 1900 CE along with reconstructed aerosol optical properties needed for climate model simulations. The eVolv2k database constitutes a significant update to prior ice-core-based volcanic forcing reconstructions for climate models, improving the accuracy of volcanic forcing, especially before 1250 CE, and extending the record by 1000 years.
Jennifer R. Marlon, Neil Pederson, Connor Nolan, Simon Goring, Bryan Shuman, Ann Robertson, Robert Booth, Patrick J. Bartlein, Melissa A. Berke, Michael Clifford, Edward Cook, Ann Dieffenbacher-Krall, Michael C. Dietze, Amy Hessl, J. Bradford Hubeny, Stephen T. Jackson, Jeremiah Marsicek, Jason McLachlan, Cary J. Mock, David J. P. Moore, Jonathan Nichols, Dorothy Peteet, Kevin Schaefer, Valerie Trouet, Charles Umbanhowar, John W. Williams, and Zicheng Yu
Clim. Past, 13, 1355–1379, https://doi.org/10.5194/cp-13-1355-2017, https://doi.org/10.5194/cp-13-1355-2017, 2017
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To improve our understanding of paleoclimate in the northeastern (NE) US, we compiled data from pollen, tree rings, lake levels, testate amoeba from bogs, and other proxies from the last 3000 years. The paleoclimate synthesis supports long-term cooling until the 1800s and reveals an abrupt transition from wet to dry conditions around 550–750 CE. Evidence suggests the region is now becoming warmer and wetter, but more calibrated data are needed, especially to capture multidecadal variability.
Rob Wilson, Rosanne D'Arrigo, Laia Andreu-Hayles, Rose Oelkers, Greg Wiles, Kevin Anchukaitis, and Nicole Davi
Clim. Past, 13, 1007–1022, https://doi.org/10.5194/cp-13-1007-2017, https://doi.org/10.5194/cp-13-1007-2017, 2017
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Blue intensity shows great potential for reconstructing past summer temperatures from conifer trees growing at high latitude or the treeline. However, conifer species that express a strong colour difference between the heartwood and sapwood can impart a long-term trend bias in the resultant reconstructions. Herein, we highlight this issue using eight mountain hemlock sites across the Gulf of Alaska and explore how a non-biased reconstruction of past temperature could be derived using such data.
Martina Messmer, Juan José Gómez-Navarro, and Christoph C. Raible
Earth Syst. Dynam., 8, 477–493, https://doi.org/10.5194/esd-8-477-2017, https://doi.org/10.5194/esd-8-477-2017, 2017
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Low-pressure systems of type Vb may trigger heavy rainfall events over central Europe. This study aims at analysing the relative role of their moisture sources. For this, a set of sensitivity experiments encompassing changes in soil moisture and Atlantic Ocean and Mediterranean Sea SSTs are carried out with WRF. The latter moisture source stands out as the most relevant one. Furthermore, the regions most affected by Vb events in the future might be shifted from the Alps to the Balkan Peninsula.
Juan José Gómez-Navarro, Eduardo Zorita, Christoph C. Raible, and Raphael Neukom
Clim. Past, 13, 629–648, https://doi.org/10.5194/cp-13-629-2017, https://doi.org/10.5194/cp-13-629-2017, 2017
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This contribution aims at assessing to what extent the analogue method, a classic technique used in other branches of meteorology and climatology, can be used to perform gridded reconstructions of annual temperature based on the limited information from available but un-calibrated proxies spread across different locations of the world. We conclude that it is indeed possible, albeit with certain limitations that render the method comparable to more classic techniques.
Alina Fiehn, Birgit Quack, Helmke Hepach, Steffen Fuhlbrügge, Susann Tegtmeier, Matthew Toohey, Elliot Atlas, and Kirstin Krüger
Atmos. Chem. Phys., 17, 6723–6741, https://doi.org/10.5194/acp-17-6723-2017, https://doi.org/10.5194/acp-17-6723-2017, 2017
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Halogenated very short-lived substances (VSLSs) are naturally produced in the ocean and emitted to the atmosphere. In the stratosphere, these compounds can have a significant influence on the ozone layer and climate. During a research cruise in the west Indian Ocean, we found an important source region of halogenated VSLSs during the Asian summer monsoon. Modeling the transport from the ocean to the stratosphere we found two main pathways, one over the Indian Ocean and one over northern India.
Lilo M. K. Henke, F. Hugo Lambert, and Dan J. Charman
Clim. Past, 13, 267–301, https://doi.org/10.5194/cp-13-267-2017, https://doi.org/10.5194/cp-13-267-2017, 2017
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To understand future ENSO behaviour we must look at the past, but temperature and rainfall proxies (e.g. tree rings, sediment cores) appear to show different responses. We tested this by making separate multi-proxy ENSO reconstructions for precipitation and temperature and found no evidence of a disagreement between ENSO-driven changes in precipitation and temperature. While this supports our physical understanding of ENSO, the lack of good proxy data must be addressed to further explore this.
Enlou Zhang, Jie Chang, Yanmin Cao, Hongqu Tang, Pete Langdon, James Shulmeister, Rong Wang, Xiangdong Yang, and Ji Shen
Clim. Past, 13, 185–199, https://doi.org/10.5194/cp-13-185-2017, https://doi.org/10.5194/cp-13-185-2017, 2017
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This paper reports the first development of sub-fossil chironomid-based mean July temperature transfer functions from China. The transfer functions yield reliable reconstructions that are comparable to the instrumental record. The application of this new tool will provide long-term quantitative palaeoclimate estimates from south-western China which is a critical region for understanding the dynamic and evolution of the Indian Ocean south-west Monsoon system.
Christine Moos, Luuk Dorren, and Markus Stoffel
Nat. Hazards Earth Syst. Sci., 17, 291–304, https://doi.org/10.5194/nhess-17-291-2017, https://doi.org/10.5194/nhess-17-291-2017, 2017
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The goal of this study was to quantify the effect of forests on the occurrence frequency and intensity of rockfalls. This was done based on 3-D rockfall simulations for different forest and non-forest scenarios on a virtual slope. The rockfall frequency and intensity below forested slopes is significantly reduced. Statistical models provide information on how specific forest and terrain parameters influence this reduction and they allow prediction and quantification of the forest effect.
Stefan Brönnimann, Abdul Malik, Alexander Stickler, Martin Wegmann, Christoph C. Raible, Stefan Muthers, Julien Anet, Eugene Rozanov, and Werner Schmutz
Atmos. Chem. Phys., 16, 15529–15543, https://doi.org/10.5194/acp-16-15529-2016, https://doi.org/10.5194/acp-16-15529-2016, 2016
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The Quasi-Biennial Oscillation is a wind oscillation in the equatorial stratosphere. Effects on climate have been found, which is relevant for seasonal forecasts. However, up to now only relatively short records were available, and even within these the climate imprints were intermittent. Here we analyze a 108-year long reconstruction as well as four 405-year long simulations. We confirm most of the claimed QBO effects on climate, but they are small, which explains apparently variable effects.
Chantal Camenisch, Kathrin M. Keller, Melanie Salvisberg, Benjamin Amann, Martin Bauch, Sandro Blumer, Rudolf Brázdil, Stefan Brönnimann, Ulf Büntgen, Bruce M. S. Campbell, Laura Fernández-Donado, Dominik Fleitmann, Rüdiger Glaser, Fidel González-Rouco, Martin Grosjean, Richard C. Hoffmann, Heli Huhtamaa, Fortunat Joos, Andrea Kiss, Oldřich Kotyza, Flavio Lehner, Jürg Luterbacher, Nicolas Maughan, Raphael Neukom, Theresa Novy, Kathleen Pribyl, Christoph C. Raible, Dirk Riemann, Maximilian Schuh, Philip Slavin, Johannes P. Werner, and Oliver Wetter
Clim. Past, 12, 2107–2126, https://doi.org/10.5194/cp-12-2107-2016, https://doi.org/10.5194/cp-12-2107-2016, 2016
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Throughout the last millennium, several cold periods occurred which affected humanity. Here, we investigate an exceptionally cold decade during the 15th century. The cold conditions challenged the food production and led to increasing food prices and a famine in parts of Europe. In contrast to periods such as the “Year Without Summer” after the eruption of Tambora, these extreme climatic conditions seem to have occurred by chance and in relation to the internal variability of the climate system.
Matthew Toohey, Bjorn Stevens, Hauke Schmidt, and Claudia Timmreck
Geosci. Model Dev., 9, 4049–4070, https://doi.org/10.5194/gmd-9-4049-2016, https://doi.org/10.5194/gmd-9-4049-2016, 2016
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Stratospheric sulfate aerosols from volcanic eruptions have a significant impact on the Earth's climate. The Easy Volcanic Aerosol (EVA) volcanic forcing generator provides a tool whereby the optical properties of volcanic aerosols can be included in climate model simulations in a self-consistent, complete, and flexible manner. EVA is based on satellite observations of the 1991 Pinatubo eruption but can be applied to any real or hypothetical eruption of interest.
Stefan Muthers, Christoph C. Raible, Eugene Rozanov, and Thomas F. Stocker
Earth Syst. Dynam., 7, 877–892, https://doi.org/10.5194/esd-7-877-2016, https://doi.org/10.5194/esd-7-877-2016, 2016
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The Atlantic Meridional Overturning Circulation (AMOC) is an important oceanic circulation system which transports large amounts of heat from the tropics to the north. This circulation is strengthened when less solar irradiance reaches the Earth, e.g. due to reduced solar activity or geoengineering techniques. In climate models, however, this response is overestimated when chemistry–climate interactions and the following shift in the atmospheric circulation systems are not considered.
Niklaus Merz, Andreas Born, Christoph C. Raible, and Thomas F. Stocker
Clim. Past, 12, 2011–2031, https://doi.org/10.5194/cp-12-2011-2016, https://doi.org/10.5194/cp-12-2011-2016, 2016
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The last (Eemian) interglacial is studied with a global climate model focusing on Greenland and the adjacent high latitudes. A set of model experiments demonstrates the crucial role of changes in sea ice and sea surface temperatures for the magnitude of Eemian atmospheric warming. Greenland temperatures are found highly sensitive to sea ice changes in the Nordic Seas but rather insensitive to changes in the Labrador Sea. This behavior has important implications for Greenland ice core signals.
Amaelle Landais, Valérie Masson-Delmotte, Emilie Capron, Petra M. Langebroek, Pepijn Bakker, Emma J. Stone, Niklaus Merz, Christoph C. Raible, Hubertus Fischer, Anaïs Orsi, Frédéric Prié, Bo Vinther, and Dorthe Dahl-Jensen
Clim. Past, 12, 1933–1948, https://doi.org/10.5194/cp-12-1933-2016, https://doi.org/10.5194/cp-12-1933-2016, 2016
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The last lnterglacial (LIG; 116 000 to 129 000 years before present) surface temperature at the upstream Greenland NEEM deposition site is estimated to be warmer by +7 to +11 °C compared to the preindustrial period. We show that under such warm temperatures, melting of snow probably led to a significant surface melting. There is a paradox between the extent of the Greenland ice sheet during the LIG and the strong warming during this period that models cannot solve.
Davide Zanchettin, Myriam Khodri, Claudia Timmreck, Matthew Toohey, Anja Schmidt, Edwin P. Gerber, Gabriele Hegerl, Alan Robock, Francesco S. R. Pausata, William T. Ball, Susanne E. Bauer, Slimane Bekki, Sandip S. Dhomse, Allegra N. LeGrande, Graham W. Mann, Lauren Marshall, Michael Mills, Marion Marchand, Ulrike Niemeier, Virginie Poulain, Eugene Rozanov, Angelo Rubino, Andrea Stenke, Kostas Tsigaridis, and Fiona Tummon
Geosci. Model Dev., 9, 2701–2719, https://doi.org/10.5194/gmd-9-2701-2016, https://doi.org/10.5194/gmd-9-2701-2016, 2016
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Simulating volcanically-forced climate variability is a challenging task for climate models. The Model Intercomparison Project on the climatic response to volcanic forcing (VolMIP) – an endorsed contribution to CMIP6 – defines a protocol for idealized volcanic-perturbation experiments to improve comparability of results across different climate models. This paper illustrates the design of VolMIP's experiments and describes the aerosol forcing input datasets to be used.
A. V. Gallego-Sala, D. J. Charman, S. P. Harrison, G. Li, and I. C. Prentice
Clim. Past, 12, 129–136, https://doi.org/10.5194/cp-12-129-2016, https://doi.org/10.5194/cp-12-129-2016, 2016
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It has become a well-established paradigm that blanket bog landscapes in the British Isles are a result of forest clearance by early human populations. We provide a novel test of this hypothesis using results from bioclimatic modelling driven by cimate reconstructions compared with a database of peat initiation dates. Both results show similar patterns of peat initiation over time and space. This suggests that climate was the main driver of blanket bog inception and not human disturbance.
J. J. Gómez-Navarro, C. C. Raible, and S. Dierer
Geosci. Model Dev., 8, 3349–3363, https://doi.org/10.5194/gmd-8-3349-2015, https://doi.org/10.5194/gmd-8-3349-2015, 2015
S. Muthers, F. Arfeuille, C. C. Raible, and E. Rozanov
Atmos. Chem. Phys., 15, 11461–11476, https://doi.org/10.5194/acp-15-11461-2015, https://doi.org/10.5194/acp-15-11461-2015, 2015
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After volcanic eruptions different radiative and chemical processes take place in the stratosphere which perturb the ozone layer and cause pronounced dynamical changes. In idealized chemistry-climate model simulations the importance of these processes and the modulating role of the climate state is analysed. The chemical effect strongly differs between a preindustrial and present-day climate, but the effect on the dynamics is weak. Radiative processes dominate the dynamics in all climate states.
M. Messmer, J. J. Gómez-Navarro, and C. C. Raible
Earth Syst. Dynam., 6, 541–553, https://doi.org/10.5194/esd-6-541-2015, https://doi.org/10.5194/esd-6-541-2015, 2015
J. J. Gómez-Navarro, O. Bothe, S. Wagner, E. Zorita, J. P. Werner, J. Luterbacher, C. C. Raible, and J. P Montávez
Clim. Past, 11, 1077–1095, https://doi.org/10.5194/cp-11-1077-2015, https://doi.org/10.5194/cp-11-1077-2015, 2015
M. Jochner, J. M. Turowski, A. Badoux, M. Stoffel, and C. Rickli
Earth Surf. Dynam., 3, 311–320, https://doi.org/10.5194/esurf-3-311-2015, https://doi.org/10.5194/esurf-3-311-2015, 2015
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The export of coarse particulate organic matter (CPOM) from mountain catchments seems to be strongly linked to rising discharge, but the mechanism leading to this is unclear. We show that log jams in a steep headwater stream are an effective barrier for CPOM export. Exceptional discharge events play a dual role: First, they destroy existing jams, releasing stored material. Second, they intensify channel--hillslope coupling, thereby recruiting logs to the channel, around which new jams can form.
F. Lehner, F. Joos, C. C. Raible, J. Mignot, A. Born, K. M. Keller, and T. F. Stocker
Earth Syst. Dynam., 6, 411–434, https://doi.org/10.5194/esd-6-411-2015, https://doi.org/10.5194/esd-6-411-2015, 2015
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We present the first last-millennium simulation with the Community Earth System Model (CESM) including an interactive carbon cycle in both ocean and land component. Volcanic eruptions emerge as the strongest forcing factor for the preindustrial climate and carbon cycle. We estimate the climate-carbon-cycle feedback in CESM to be at the lower bounds of empirical estimates (1.3ppm/°C). The time of emergence for interannual global land and ocean carbon uptake rates are 1947 and 1877, respectively.
D. Zanchettin, O. Bothe, F. Lehner, P. Ortega, C. C. Raible, and D. Swingedouw
Clim. Past, 11, 939–958, https://doi.org/10.5194/cp-11-939-2015, https://doi.org/10.5194/cp-11-939-2015, 2015
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A discrepancy exists between reconstructed and simulated Pacific North American pattern (PNA) features during the early 19th century. Pseudo-reconstructions demonstrate that the available PNA reconstruction is potentially skillful but also potentially affected by a number of sources of uncertainty and deficiencies especially at multidecadal and centennial timescales. Simulations and reconstructions can be reconciled by attributing the reconstructed PNA features to internal variability.
H. Frey, H. Machguth, M. Huss, C. Huggel, S. Bajracharya, T. Bolch, A. Kulkarni, A. Linsbauer, N. Salzmann, and M. Stoffel
The Cryosphere, 8, 2313–2333, https://doi.org/10.5194/tc-8-2313-2014, https://doi.org/10.5194/tc-8-2313-2014, 2014
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Existing methods (area–volume relations, a slope-dependent volume estimation method, and two ice-thickness distribution models) are used to estimate the ice reserves stored in Himalayan–Karakoram glaciers. Resulting volumes range from 2955–4737km³. Results from the ice-thickness distribution models agree well with local measurements; volume estimates from area-related relations exceed the estimates from the other approaches. Evidence on the effect of the selected method on results is provided.
M. Toohey, K. Krüger, M. Bittner, C. Timmreck, and H. Schmidt
Atmos. Chem. Phys., 14, 13063–13079, https://doi.org/10.5194/acp-14-13063-2014, https://doi.org/10.5194/acp-14-13063-2014, 2014
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Earth system model simulations are used to investigate the impact of volcanic aerosol forcing on stratospheric dynamics, e.g. the Northern Hemisphere (NH) polar vortex. We find that mechanisms linking aerosol heating and high-latitude dynamics are not as direct as often assumed; high-latitude effects result from changes in stratospheric circulation and related vertical motions. The simulated responses also show evidence of being sensitive to the structure of the volcanic forcing used.
S. Muthers, J. G. Anet, A. Stenke, C. C. Raible, E. Rozanov, S. Brönnimann, T. Peter, F. X. Arfeuille, A. I. Shapiro, J. Beer, F. Steinhilber, Y. Brugnara, and W. Schmutz
Geosci. Model Dev., 7, 2157–2179, https://doi.org/10.5194/gmd-7-2157-2014, https://doi.org/10.5194/gmd-7-2157-2014, 2014
K. M. Keller, F. Joos, and C. C. Raible
Biogeosciences, 11, 3647–3659, https://doi.org/10.5194/bg-11-3647-2014, https://doi.org/10.5194/bg-11-3647-2014, 2014
N. Merz, A. Born, C. C. Raible, H. Fischer, and T. F. Stocker
Clim. Past, 10, 1221–1238, https://doi.org/10.5194/cp-10-1221-2014, https://doi.org/10.5194/cp-10-1221-2014, 2014
C. van den Bogaard, B. J. L. Jensen, N. J. G. Pearce, D. G. Froese, M. V. Portnyagin, V. V. Ponomareva, and V. Wennrich
Clim. Past, 10, 1041–1062, https://doi.org/10.5194/cp-10-1041-2014, https://doi.org/10.5194/cp-10-1041-2014, 2014
J. G. Anet, S. Muthers, E. V. Rozanov, C. C. Raible, A. Stenke, A. I. Shapiro, S. Brönnimann, F. Arfeuille, Y. Brugnara, J. Beer, F. Steinhilber, W. Schmutz, and T. Peter
Clim. Past, 10, 921–938, https://doi.org/10.5194/cp-10-921-2014, https://doi.org/10.5194/cp-10-921-2014, 2014
C. C. Raible, F. Lehner, J. F. González-Rouco, and L. Fernández-Donado
Clim. Past, 10, 537–550, https://doi.org/10.5194/cp-10-537-2014, https://doi.org/10.5194/cp-10-537-2014, 2014
J. G. Anet, S. Muthers, E. Rozanov, C. C. Raible, T. Peter, A. Stenke, A. I. Shapiro, J. Beer, F. Steinhilber, S. Brönnimann, F. Arfeuille, Y. Brugnara, and W. Schmutz
Atmos. Chem. Phys., 13, 10951–10967, https://doi.org/10.5194/acp-13-10951-2013, https://doi.org/10.5194/acp-13-10951-2013, 2013
N. Merz, C. C. Raible, H. Fischer, V. Varma, M. Prange, and T. F. Stocker
Clim. Past, 9, 2433–2450, https://doi.org/10.5194/cp-9-2433-2013, https://doi.org/10.5194/cp-9-2433-2013, 2013
S. E. Tolwinski-Ward, K. J. Anchukaitis, and M. N. Evans
Clim. Past, 9, 1481–1493, https://doi.org/10.5194/cp-9-1481-2013, https://doi.org/10.5194/cp-9-1481-2013, 2013
M. Toohey and T. von Clarmann
Atmos. Meas. Tech., 6, 937–948, https://doi.org/10.5194/amt-6-937-2013, https://doi.org/10.5194/amt-6-937-2013, 2013
D. J. Charman, D. W. Beilman, M. Blaauw, R. K. Booth, S. Brewer, F. M. Chambers, J. A. Christen, A. Gallego-Sala, S. P. Harrison, P. D. M. Hughes, S. T. Jackson, A. Korhola, D. Mauquoy, F. J. G. Mitchell, I. C. Prentice, M. van der Linden, F. De Vleeschouwer, Z. C. Yu, J. Alm, I. E. Bauer, Y. M. C. Corish, M. Garneau, V. Hohl, Y. Huang, E. Karofeld, G. Le Roux, J. Loisel, R. Moschen, J. E. Nichols, T. M. Nieminen, G. M. MacDonald, N. R. Phadtare, N. Rausch, Ü. Sillasoo, G. T. Swindles, E.-S. Tuittila, L. Ukonmaanaho, M. Väliranta, S. van Bellen, B. van Geel, D. H. Vitt, and Y. Zhao
Biogeosciences, 10, 929–944, https://doi.org/10.5194/bg-10-929-2013, https://doi.org/10.5194/bg-10-929-2013, 2013
Cited articles
Abbott, P. M., Plunkett, G., Corona, C., Chellman, N. J., McConnell, J. R., Pilcher, J. R., Stoffel, M., and Sigl, M.: Cryptotephra from the Icelandic Veiðivötn 1477 CE eruption in a Greenland ice core: confirming the dating of volcanic events in the 1450s CE and assessing the eruption's climatic impact, Clim. Past, 17, 565–585, https://doi.org/10.5194/cp-17-565-2021, 2021.
Al-Fadl Ibrahim, M. A. (Ed.): al-Tabarī, Ta'rīkh al-rusul wa'l-mulūk, 10 (Cairo: Dar al-Ma'arif, 1960–1969), 9, 270–322.
Al-Qādir Àtā, M. À. and al-Qādir Àtā, M. À. (Eds.):, Ibn al-Jawzi, al-Muntaẓam fī ta’rīkh al-umam wa'l-mulūk, 19, Beruit: Dār al-Kutub al ‘Ilmiyya, 11, 270-1, 1992.
Amesbury, M. J., Swindles, G. T., Bobrov, A., Charman, D. J., Holden, J.,
Lamentowicz, M., Mallon, G., Mazei, Y., Mitchell, E. A., Payne, R. J., and
Roland, T. P.: Development of a new pan-European testate amoeba transfer
function for reconstructing peatland palaeohydrology, Quaternary Sci. Rev.,
152, 132–151, https://doi.org/10.1016/j.quascirev.2016.09.024, 2016.
Amesbury, M. J., Booth, R. K., Roland, T. P., Bunbury, J., Clifford, M. J.,
Charman, D. J., Elliot, S., Finkelstein, S., Garneau, M., Hughes, P. D., and
Lamarre, A.: Towards a Holarctic synthesis of peatland testate amoeba ecology: Development of a new continental-scale palaeohydrological transfer
function for North America and comparison to European data, Quaternary Sci.
Rev., 201, 483–500, https://doi.org/10.1016/j.quascirev.2018.10.034, 2018.
Ammann, C. M., Meehl, G. A., Washington, W. M., and Zender, C. S.: A monthly
and latitudinally varying volcanic forcing dataset in simulations of 20th
century climate, Geophys. Res. Lett., 30, 1657, https://doi.org/10.1029/2003GL016875, 2003.
Anchukaitis, K. J., Cook, E. R., Cook, B. I., Pearl, J., D'Arrigo, R., and
Wilson, R.: Coupled modes of North Atlantic ocean atmosphere variability and
the onset of the Little Ice Age, Geophys. Res. Lett., 46, 12417–12426,
https://doi.org/10.1029/2019GL084350, 2019.
Atwood, A. R., Donohoe, A., Battisti, D. S., Liu, X., and Pausata, F. S. R.:
Robust longitudinally variable responses of the ITCZ to a myriad of climate
forcings, Geophys. Res. Lett., 47, e2020GL088833, https://doi.org/10.1029/2020GL088833, 2020.
Aubry, T.: EVA_H, GitHub [code], last access: 12 May 2022.
Aubry, T. J., Toohey, M., Marshall, L., Schmidt, A., and Jellinek, A. M.: A
new volcanic stratospheric sulfate aerosol forcing emulator (EVA_H): Comparison with interactive stratospheric aerosol models, J. Geophys. Res.-Atmos., 125, e2019JD031303, https://doi.org/10.1029/2019JD031303, 2020.
Aubry, T. J., Engwell, S., Bonadonna, C., Carazzo, G., Scollo, S., Van
Eaton, A. R., Taylor, I. A., Jessop, D., Eychenne, J., Gouhier, M., Mastin, L. G., Wallace, K. L., Biass, S., Bursik, M., Grainger, R. G., Jellinek, A. M., and Schmidt, A.: The Independent Volcanic Eruption Source Parameter Archive (IVESPA, version 1.0): A new observational database to support explosive eruptive column model validation and development, J. Volcanol. Geoth. Res., 417, 107295, https://doi.org/10.1016/j.jvolgeores.2021.107295, 2021.
Barnes, E. A., Solomon, S., and Polvani, L. M.: Robust wind and precipitation
responses to the Mount Pinatubo eruption, as simulated in the CMIP5 models, J. Climate, 29, 4763–4778, https://doi.org/10.1175/JCLI-D-15-0658.1, 2016.
Bereiter, B., Eggleston, S., Schmitt, J., Nehrbass-Ahles, C., Stocker, T. F.,
Fischer, H., Kipfstuhl, S., and Chappellaz, J.: Revision of the EPICA Dome C
CO2 record from 800 to 600 kyr before present, Geophys. Res. Lett., 42,
542–549, https://doi.org/10.1002/2014GL061957, 2015.
Berger, A.: Long-term variations of daily insolation and Quaternary climatic
changes, J. Atmos. Sci., 35, 2362–2367,
https://doi.org/10.1175/1520-0469(1978)035<2362:LTVODI>2.0.CO;2, 1978.
Blaauw, M. and Christen, J. A.: Flexible paleoclimate age-depth models using
an autoregressive gamma process, Bayesian Anal., 6, 457–474, https://doi.org/10.1214/11-BA618, 2011.
Blong, R., Fallon, S., Wood, R., McKee, C., Chen, K. P., Magill, C., and
Barter, P.: Significance and timing of the mid-17th-century eruption of Long
Island, Papua New Guinea, Holocene, 28, 529–544, https://doi.org/10.1177/0959683617735589, 2018.
Bonadonna, C. and Costa, A.: Estimating the volume of tephra deposits: a new
simple strategy, Geology, 40, 415–418, https://doi.org/10.1130/G32769.1, 2012.
Booth, R. K.: Testate amoebae as proxies for mean annual water-table depth
in Sphagnum-dominated peatlands of North America, J. Quaternary Sci., 23,
43–57, https://doi.org/10.1002/jqs.1114, 2008.
Booth, R. K., Lamentowicz, M., and Charman, D. J.: Preparation and analysis
of testate amoebae in peatland palaeoenvironmental studies, Mires and Peat,
7, 1–7, 2010.
Brenna, H., Kutterolf, S., Mills, M. J., and Krüger, K.: The potential impacts of a sulfur- and halogen-rich supereruption such as Los Chocoyos on the atmosphere and climate, Atmos. Chem. Phys., 20, 6521–6539, https://doi.org/10.5194/acp-20-6521-2020, 2020.
Bunbury, J. and Gajewski, K.: Effects of the White River Ash event on
aquatic environments, southwest Yukon, Canada, Arctic, 66, 17–31,
https://www.jstor.org/stable/23594603 (last access: 1 December 2021), 2013.
Büntgen, U. and Tegel, W.: European tree-ring data and the Medieval
Climate Anomaly, PAGES news, 19, 14–15, 2011.
Büntgen, U., Myglan, C., and Ljungqvist, F.: Cooling and societal change
during the Late Antique Little Ice Age from 526 to around 660 AD, Nat.
Geosci., 9, 231–236, https://doi.org/10.1038/ngeo2652, 2016.
Büntgen, U., Asrenault, D., Boucher, E., Churakova (Sidorova), O. V.,
Gennaretti, F., Crivellaro, A., Hugher, M. K., Kirdvanov, A. V., Klippel, L.,
Krusic, P. J., Linerholm, H. W., Ljungjjvist, F. D., Ludescher, J., McCormick, M., Sigl, M., Vaganov, E. A., and Esper, J.: Prominent role of volcanism in Common Era climate variability and human history, Dendrochronologia, 65, 125757, https://doi.org/10.1016/j.dendro.2020.125757, 2020.
Carey, S. and Sparks, R. S. J.: Quantitative models of the fallout and
dispersal of tephra from volcanic eruption columns, B. Volcanol., 48, 109–125, https://doi.org/10.1007/BF01046546, 1986.
Charman, D. J., Hendon, D., and Woodland, W. A.: The identification of testate amoebae (Protozoa: Rhizopoda) in peats, Quaternary Research Association, London, QRA Technical Guide No. 9, 147 pp., 2000.
Chen, G. (Ed.): Zhongguo lidai tianzai renhuo biao (Shanghai 1986), Jinan University Press, 1, 652–652, Shanghai, 1986.
Christiansen, B.: Volcanic Eruptions, Large-Scale Modes in the Northern
Hemisphere, and the El Niño-Southern Oscillation, J. Climate, 21,
910–922, https://doi.org/10.1175/2007JCLI1657.1, 2008.
Clifford, M. J. and Booth, R. K.: Increased probability of fire during late
Holocene droughts in northern New England, Clim. Change, 119, 693–704,
https://doi.org/10.1016/j.quaint.2011.05.027, 2013.
Colose, C. M., LeGrande, A. N., and Vuille, M.: The influence of volcanic eruptions on the climate of tropical South America during the last millennium in an isotope-enabled general circulation model, Clim. Past, 12, 961–979, https://doi.org/10.5194/cp-12-961-2016, 2016.
Cook, E. R., Meko, D. M., Stahle, D. W., and Cleaveland, M. K.: Drought
reconstructions for the continental United States, J. Climate, 12,
1145–1162, https://doi.org/10.1175/1520-0442(1999)012<1145:DRFTCU>2.0.CO;2, 1999.
Cook, E. R., Seager, R., Heim Jr., R. R., Vose, R. S., Herweijer, C., and
Woodhouse, C.: Megadroughts in North America: placing IPCC projections of
hydroclimatic change in a long-term palaeoclimate context, J. Quaternary
Sci., 25, 48–61, https://doi.org/10.1002/jqs.1303, 2010.
Cook, E. R., Seager, R., Kushnir, Y., Briffa, K. R., Büntgen, U., Frank,
D., Krusic, P. J., Tegel, W., van der Schrier, G., Andreu-Hayles, L.,
Baillie, M., Baittinger, C., Bleicher, N., Bonde, N., Brown, D., Carrer, M.,
Cooper, R., Cufar, K., Dittmar, C., Esper, J., Griggs, C., Gunnarson, B.,
Gunther, B., Gutierrez, E., Haneca, K., Helama, S., Herzig, F., Heussner,
K.-U., Hofmann, J., Janda, P., Kontic, R., Kose, N., Kyncl, T., Levanic, T.,
Linderholm, H., Manning, S., Melvin, T. M., Miles, D., Neuwirth, B.,
Nicolussi, K., Nola, P., Panayotov, M., Popa, I., Rothe, A., Seftigen, K.,
Seim, A., Svarva, H., Svoboda, M., Thun, T., Timonen, M., Touchan, R.,
Trotsiuk, V., Trouet, V., Walder, F., Wazny, T., Wilson, R., and Zang, C.:
Old World megadroughts and pluvials during the Common Era, Sci. Adv., 1, e1500561, https://doi.org/10.1126/sciadv.1500561, 2015.
Coulter, S. E., Pilcher, J. R., Plunkett, G., Baillie, M., Hall, V. A.,
Steffensen, J. P., Vinther, B. M., Clausen, H. B., and Johnsen, S. J.:
Holocene tephras highlight complexity of volcanic signals in Greenland ice
cores, J. Geophys. Res., 117, D21303, https://doi.org/10.1029/2012JD017698, 2012.
Coyle McClung, L.: A palynological investigation of land-use patterns in
first millennium AD Ireland, unpublished PhD thesis, Queen's University
Belfast, https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.601121 (last access: 12 May 2022), 2012.
Devroey, J.-P.: La Nature et le Roi: Environment, Pouvoir et Société
à l'Âge de Charlemagne (740–820), Albin Michel, Paris, ISBN-10: 2226439404, 2019.
Duby, G.: The early growth of the European economy: Warriors and peasants
from the seventh to the twelfth century, translated by: Clarke, H. B., Cornell Universty Press, Ithaca,ISBN-13: 9780801491696, 1974.
Fierstein, J. and Nathenson, M.: Another look at the calculation of fallout
tephra volumes, B. Volcanol., 54, 156–167, https://doi.org/10.1007/BF00278005, 1992.
Guillet, S., Corona, C., Stoffel, M., Khodri, M., Lavigne, F., Ortega, P.,
Eckert, N., Selenniou, P., Daux, V., Churakova (Sidorova), O., Davi, N.,
Edouard, J. L., Yong, Z., Luckman, B. H., Myglan, V. S., Guiot, J., Beniston,
M., Masson-Delmotte, V., and Oppenheimer, C.: Climate response to the Samalas
volcanic eruption in 1257 revealed by proxy records, Nat. Geosci., 10,
123–128, https://doi.org/10.1038/ngeo2875, 2017.
Guillet, S., Corona, C., Ludlow, F., Oppenheimer, C., and Stoffel, M.:
Climatic and societal impacts of a “forgotten” cluster of volcanic
eruptions in 1108-1110 CE, Sci. Rep., 10, 6715, https://doi.org/10.1038/s41598-020-63339-3, 2020.
Guo, S., Bluth, G. J. S., Rose, W. I., Watson, M., and Prata, A. J.: Re-evaluation of SO2 release of the 15 June 1991 Pinatubo eruption using ultraviolet and infrared sensors, Geochem., Geophy., Geosy., 5, 4 , https://doi.org/10.1029/2003GC000654, 2004.
Haldon, J., Mordechai, L., Newfield, T. P., Chase, A. F., Izdebski, A.,
Guzowski, P., Labuhn, I., and Roberts, N.: History meets palaeoscience:
Consilience and collaboration in studying past societal responses to
environmental change, P. Natl. Acad. Sci. USA, 115, 3210–3218,
https://doi.org/10.1073/pnas.1716912115, 2018.
Hall, V. A.: The vegetation history of monastic and secular sites in the
midlands of Ireland over the last two millennia, Veg. Hist. Archaeobot., 15, 1–12, https://doi.org/10.1007/s00334-005-0072-0, 2005.
Hare, P. G., Greer, S., Gotthardt, R., Farnell, R., Bowyer, V., Schweger, C.,
and Strand, D.: Ethnographic and archaeological investigations of alpine ice
patches in southwest Yukon, Canada, Arctic, 57, 260–272,
https://www.jstor.org/stable/40512063 (last access: 5 May 2022), 2004.
Hassan, F. A.: Historical Nile floods and their implications for climatic
change, Science, 212, 1142–1145, 1981.
Hassan, F. A.: Extreme Nile floods and famines in Medieval Egypt (AD
930–1500) and their climatic implications, Quatern. Int., 173–174, 101–112, https://doi.org/10.1016/j.quaint.2007.06.001, 2007.
Hassan, F. A. and Stucki, B. R.: Nile floods and climatic change, in: Climate: history, periodicity, and predictability, edited by: Rampino, M. R., Sanders, J. E., Newman, W. S., and Königsson, L. K., Van Nostrand &
Reinhold, Amsterdam, 37–46, ISBN: 0-442-27866-7, 1987.
Haywood, J., Jones, A., Bellouin, N., and Stephenson, D.: Asymmetric forcing
from stratospheric aerosols impacts Sahelian rainfall, Nat. Clim. Change, 3, 660–665, https://doi.org/10.1038/nclimate1857, 2013.
Hirsch, A.: Handbook of geographical and historical pathology, vol. 2:
Chronic infective, toxic, parasitic, septic and constitutional diseases,
translated by: Creighton, C., New Sydenham Society, London, OCLC: 6607841, 1885.
Held, I. M. and Soden, B. J.: Robust responses of the hydrological cycle to
global warming, J. Climate, 19, 5686–5699, https://doi.org/10.1175/JCLI3990.1, 2006.
Hendon, D. and Charman, D. J.: The preparation of testate amoebae (Protozoa:
Rhizopoda) samples from peat, Holocene, 7, 199–205, https://doi.org/10.1177/095968369700700207, 1997.
Hogg, A., Lowe, D. J., Palmer, J., Boswijk, G., and Ramsey, C. B.: Revised
calendar date for the Taupo eruption derived by 14C wiggle-matching using a New Zealand kauri 14C calibration data set, Holocene, 22, 439–449, https://doi.org/10.1177/0959683611425551, 2012.
Hogg, A. G., Wilson, C. J. N., Lowe, D. J., Turney, C. S. M., White, P.,
Lorrey, A. M., Manning, S. W., Palmer, J. G., Bury, S., Brown, J., Southon,
J., and Petchey, F.: Wiggle-match radiocarbon dating of the Taupo eruption,
Nat. Commun., 10, 4669, https://doi.org/10.1038/s41467-019-12532-8, 2019.
Hurrell, J. W., Holland, M. M., Gent, P. R., Ghan, S., Kay, J. E., Kushner,
P. J., Lamarque, J. F., Large, W. G., Lawrence, D., Lindsay, K., and
Lipscomb, W. H.: The community earth system model: a framework for
collaborative research, B. Am. Meteorol. Soc., 94, 1339–1360, https://doi.org/10.1175/BAMS-D-12-00121.1, 2013.
Iles, C. E. and Hegerl, G. C.: The global precipitation response to volcanic
eruptions in the CMIP5 models, Environ. Res. Lett., 9, 104012,
https://doi.org/10.1088/1748-9326/9/10/104012, 2014.
Iles, C. E. and Hegerl, G. C.: Systematic change in global patterns of
streamflow following volcanic eruptions, Nat. Geosci., 8, 838–842,
https://doi.org/10.1038/ngeo2545, 2015.
Jensen, B. J. L., Pyne-O'Donnell, S., Plunkett, G., Froese, D. G., Hughes, P.
D., Sigl, M., McConnell, J. R., Amesbury, M. J., Blackwell, P. G., van den
Bogaard, C., Buck, C. E., Charman, D.J., Clague, J. J., Hall, V. A., Koch,
J., Mackay, H., Mallon, G., McColl, L., and Pilcher, J. R.: Transatlantic
distribution of the Alaskan White River Ash, Geology 42,
https://doi.org/10.1130/G35945.1, 875–878, 2014.
Jensen, B. J. L., Davies, L. D., Nolan, C., Pyne-O'Donnell, S., Monteath, A.
J., Ponomareva, V., Portnyagin, M., Booth, R., Bursik, M., Cook, E.,
Plunkett, G., Vallance, J. W., Luo, Y., Cwynar, L. C., Hughes, P., and
Pearson, G. D.: A latest Pleistocene and Holocene composite
tephrostratigraphic framework for northeastern North America, Quaternary
Sci. Rev., 272, 107242, https://doi.org/10.1016/j.quascirev.2021.107242, 2021.
Joos, F. and Spahni, R.: Rates of change in natural and anthropogenic
radiative forcing over the past 20,000 years, P. Natl. Acad. Sci. USA, 105,
1425–1430, https://doi.org/10.1073/pnas.0707386105, 2008.
Jungclaus, J. H., Bard, E., Baroni, M., Braconnot, P., Cao, J., Chini, L. P., Egorova, T., Evans, M., González-Rouco, J. F., Goosse, H., Hurtt, G. C., Joos, F., Kaplan, J. O., Khodri, M., Klein Goldewijk, K., Krivova, N., LeGrande, A. N., Lorenz, S. J., Luterbacher, J., Man, W., Maycock, A. C., Meinshausen, M., Moberg, A., Muscheler, R., Nehrbass-Ahles, C., Otto-Bliesner, B. I., Phipps, S. J., Pongratz, J., Rozanov, E., Schmidt, G. A., Schmidt, H., Schmutz, W., Schurer, A., Shapiro, A. I., Sigl, M., Smerdon, J. E., Solanki, S. K., Timmreck, C., Toohey, M., Usoskin, I. G., Wagner, S., Wu, C.-J., Yeo, K. L., Zanchettin, D., Zhang, Q., and Zorita, E.: The PMIP4 contribution to CMIP6 – Part 3: The last millennium, scientific objective, and experimental design for the PMIP4 past1000 simulations, Geosci. Model Dev., 10, 4005–4033, https://doi.org/10.5194/gmd-10-4005-2017, 2017.
Kageyama, M., Braconnot, P., Harrison, S. P., Haywood, A. M., Jungclaus, J. H., Otto-Bliesner, B. L., Peterschmitt, J.-Y., Abe-Ouchi, A., Albani, S., Bartlein, P. J., Brierley, C., Crucifix, M., Dolan, A., Fernandez-Donado, L., Fischer, H., Hopcroft, P. O., Ivanovic, R. F., Lambert, F., Lunt, D. J., Mahowald, N. M., Peltier, W. R., Phipps, S. J., Roche, D. M., Schmidt, G. A., Tarasov, L., Valdes, P. J., Zhang, Q., and Zhou, T.: The PMIP4 contribution to CMIP6 – Part 1: Overview and over-arching analysis plan, Geosci. Model Dev., 11, 1033–1057, https://doi.org/10.5194/gmd-11-1033-2018, 2018.
Kerr, T. R., Swindles, G. T., and Plunkett, G.: Making hay while the sun
shines? Socio-economic change, cereal production and climatic deterioration
in early medieval Ireland, J. Archaeol. Sci., 36, 2868–2874, https://doi.org/10.1016/j.jas.2009.09.015, 2009.
Kim, W. M. and Raible, C. C.: The Community Earth System Model (CESM1.2.2) Ensemble Simulation (845–859 CE) for publication Mackay et al., 2022, Zenodo [data set], https://doi.org/10.5281/zenodo.6545625, 2022.
Kim, W. M., Blender, R., Sigl, M., Messmer, M., and Raible, C. C.: Statistical characteristics of extreme daily precipitation during 1501 BCE–1849 CE in the Community Earth System Model, Clim. Past, 17, 2031–2053, https://doi.org/10.5194/cp-17-2031-2021, 2021a.
Kim, W. M., Blender, R., Sigl, M., Messmer, M., and Raible, C. C.: Data for publication “Statistical characteristics of extreme daily precipitation during 1501 BCE–1849 CE in the Community Earth System Model”, Zenodo [data set], https://doi.org/10.5281/zenodo.5725495, 2021b.
Kinder, M., Wulf, S., Appelt, O., Hardiman, M., Żarczyński, M., and
Tylmann, W.: Late-Holocene ultra-distal cryptotephra discoveries in varved
sediments of Lake Żabińskie, NE Poland, J. Volcanol. Geoth. Res.,
402, 106988, https://doi.org/10.1016/j.jvolgeores.2020.106988, 2020.
Kodisch, A., Wilde, P., Schmiedchen, B., Fromme, F.-J., Rodemann, B., Tratwal, A., oberforster, M., Wieser, F., Schiermann, A., Jorgensen, L. N.,
and Miedaner, T.: Ergot infection in winter rye hybrids shows differential
contribution of male and female genotypes and environment, Euphytica, 216, 65, https://doi.org/10.1007/s10681-020-02600-2, 2020.
Kondrashov, D., Feliks, Y., and Ghil, M.: Oscillatory modes of extended Nile
River records (A.D. 622–1922), Geophys. Res. Lett., 32, L10702,
https://doi.org/10.1029/2004GL022156, 2005.
Kristensen, T. J., Beaudoin, A. B., and Ives, J. W.: Environmental and
Hunter-Gatherer Responses to the White River Ash East Volcanic Eruption in
the Late Holocene Canadian Subarctic, Arctic, 73, 153–186, 2020.
Ladd, M., Viau, A. E., Way, R. G., Gajewski, K., and Sawada, M. C.: Variations in precipitation in North America during the past 2000 years, The Holocene, 28, 667–675, https://doi.org/10.1177/0959683617735583, 2018.
Lerbekmo, J. F., Westgate, J. A., Smith, D. G. W., and Denton, G. H.: New
data on the character and history of the White River volcanic eruption,
Alaska, in: Quaternary studies, edited by: Suggate, R. P. and Cresswell, M. M., Royal Society of New Zealand, Wellington, 203–209, 1975.
Lerbekmo, J. F.: The White river ash: largest Holocene Plinian tephra,
Can. J. Earth Sci., 45, 693–700, https://doi.org/10.1139/E08-023, 2008.
Ludlow, F.: The utility of the Irish Annals as a source for the
reconstruction of the climate, unpublished PhD thesis, Trinity College
Dublin, 2010.
Ludlow, F. and Manning, J. G.: Revolts under the Ptolemies: A paleoclimatic
perspective, in: Revolt and resistance in the ancient classical world and the Near East: The crucible of empire, edited by: Collins, J. J. and Manning, J.G., Brill, Leiden, 154–171, ISBN: 978-90-04-33018-4, 2016.
Ludlow, F. and Manning, J. G.: Volcanic eruptions, veiled suns, and Nile
failure in Egyptian history: Integrating hydroclimate into understandings of
historical change, in: Climate change and ancient societies in Europe and the Near East: Diversity in collapse and resilience, edited by: Erdkamp, P., Manning, J. G., and Verboven K., Palgrave Macmillan, London, 301–320, ISBN: 978-3-030-81103-7, 2021.
Ludlow, F., Stine, A. R., Leahy, P., Murphy, E., Mayewski, P. A., Taylor, D.,
Killen, J., Baillie, M. G. L., Hennessy, M., and Kiely, G.: Medieval Irish
chronicles reveal persistent volcanic forcing of severe winter cold events,
431–1649 CE, Environ. Res. Lett., 8, 024035, https://doi.org/10.1088/1748-9326/8/2/024035, 2013
Mackay, H., Hughes, P. D. M., Jensen, B. J. L., Langdon, P. G.,
Pyne-O'Donnell, S., Plunkett, G., Froese, D. G., and Coulter, S.: The
foundations of a late Holocene tephrostratigraphic framework for eastern
North America, Quaternary Sci. Rev. 132, 101–113,
https://doi.org/10.1016/j.quascirev.2015.11.011, 2016.
Mackay, H., Amesbury, M. J., Langdon, P. G., Charman, D. J., Magnan, G., van
Bellen, S., Garneau, M., Bainbridge, R., and Hughes, P. D.: Spatial variation of hydroclimate in north-eastern North America during the last millennium, Quaternary Sci. Rev., 256, 106813, https://doi.org/10.1016/j.quascirev.2021.106813, 2021.
Mackay, H., Amesbury, M. J., Langdon, P. G., Charman, D. J., Magnan, G., van Bellen, S., Garneau, M., Bainbridge, R., and Hughes, P. D.: Neotoma Dataset 51434, Framboise Bog, Testate amoebae Dataset – Neotoma Testate Amoebae Database [data set], https://doi.org/10.21233/B7SC-4515, 2022a.
Mackay, H., Amesbury, M. J., Langdon, P. G., Charman, D. J., Magnan, G., van Bellen, S., Garneau, M., Bainbridge, R., and Hughes, P. D.: Neotoma Dataset 51436, Jefferys Bog, Testate amoebae Dataset – Neotoma Testate Amoebae Database [data set], https://doi.org/10.21233/VBAE-XM49, 2022b.
Mackay, H., Amesbury, M. J., Langdon, P. G., Charman, D. J., Magnan, G., van Bellen, S., Garneau, M., Bainbridge, R., and Hughes, P. D.: Neotoma Dataset 51438, Petite Bog, Testate amoebae Dataset – Neotoma Testate Amoebae Database [data set], https://doi.org/10.21233/0FNY-EP27, 2022c.
Mackay, H., Amesbury, M. J., Langdon, P. G., Charman, D. J., Magnan, G., van Bellen, S., Garneau, M., Bainbridge, R., and Hughes, P. D.: Neotoma Dataset 51758, Villagedale, Testate amoebae Dataset – Neotoma Testate Amoebae Database [data set], https://doi.org/10.21233/P27F-GH47, 2022d.
Mackay, H., Amesbury, M. J., Langdon, P. G., Charman, D. J., Magnan, G., van Bellen, S., Garneau, M., Bainbridge, R., and Hughes, P. D.: Neotoma Dataset 51756, Sidney Bog, Testate amoebae Dataset – Neotoma Testate Amoebae Database [data set], https://doi.org/10.21233/RCPG-WB72, 2022e.
Mackay, H., Amesbury, M. J., Langdon, P. G., Charman, D. J., Magnan, G., van Bellen, S., Garneau, M., Bainbridge, R., and Hughes, P. D.: Neotoma Dataset 51725, Saco Bog, Testate amoebae Dataset – Neotoma Testate Amoebae Database [data set], https://doi.org/10.21233/12S2-FD03, 2022f.
Maeno, F., Nakada, S., Yoshimoto, M., Shimano, T., Hokanishi, N., Zaennudin,
A., and Iguchi, M.: A sequence of a plinian eruption preceded by dome
destruction at Kelud volcano, Indonesia, on February 13, 2014, revealed from
tephra fallout and pyroclastic density current deposits, J. Volcanol. Geoth.
Res., 382, 24–41, https://doi.org/10.1016/j.jvolgeores.2017.03.002, 2019.
Mann, M. E., Zhang, Z., Hughes, M. K., Bradley, R. S., Miller, S. K.,
Rutherford, S., and Ni, F.: Proxy-based reconstructions of hemispheric and
global surface temperature variations over the past two millennia, P. Natl.
Acad. Sci. USA, 105, 13252–13257, https://doi.org/10.1073/pnas.0805721105, 2008.
Mann, M. E., Zhang, Z., Rutherford, S., Bradley, R. S., Hughes, M. K.,
Shindell, D., Ammann, C., Faluvegi, G., and Ni, F.: Global signatures and
dynamical origins of the Little Ice Age and Medieval Climate Anomaly,
Science, 326, 1256–1260, https://doi.org/10.1126/science.1177303, 2009.
Manning, J. G., Ludlow, F., Stine, A. R., Boos, W. R., Sigl, M., and Marlon,
J. R.: Volcanic suppression of Nile summer flooding triggers revolt and
constrains interstate conflict in ancient Egypt, Nat. Commun., 8, 900, https://doi.org/10.1038/s41467-017-00957-y, 2017.
Marlon, J. R., Pederson, N., Nolan, C., Goring, S., Shuman, B., Robertson, A., Booth, R., Bartlein, P. J., Berke, M. A., Clifford, M., Cook, E., Dieffenbacher-Krall, A., Dietze, M. C., Hessl, A., Hubeny, J. B., Jackson, S. T., Marsicek, J., McLachlan, J., Mock, C. J., Moore, D. J. P., Nichols, J., Peteet, D., Schaefer, K., Trouet, V., Umbanhowar, C., Williams, J. W., and Yu, Z.: Climatic history of the northeastern United States during the past 3000 years, Clim. Past, 13, 1355–1379, https://doi.org/10.5194/cp-13-1355-2017, 2017.
Marshall, L., Johnson, J. S., Mann, G. W., Lee, L., Dhomse, S. S., Regayre, L., Yoshioka, M., Carslaw, K. S., and Schmidt, A.: Exploring how eruption source parameters affect volcanic radiative forcing using statistical emulation, J. Geophys. Res.-Atmos., 124, 964–985, https://doi.org/10.1029/2018JD028675, 2019.
Marshall, L. R., Smith, C. J., Forster, P. M., Aubry, T. J., Andrews, T., and
Schmidt, A.: Large variations in volcanic aerosol forcing efficiency due to
eruption source parameters and rapid adjustments, Geophys. Res. Lett., 47,
e2020GL090241, https://doi.org/10.1029/2020GL090241, 2020.
McCarthy, D.: The Irish Annals: their genesis, evolution and history,
Four Courts Press, Dublin, https://doi.org/10.1017/S0021121400005940, 2008.
McCarthy, D. and Breen, A.: An evaluation of astronomical observations in the
Irish annals, Vistas Astron., 41, 117–138, https://doi.org/10.1016/S0083-6656(96)00052-9, 1997.
McConnell, J. R., Sigl, M., Plunkett, G., Burke, A., Kim, W. M., Raible, C. C., Wilson, A. I., Manning, J. G., Ludlow, F., Chellman, N. J., and Innes, H. M.: Extreme climate after massive eruption of Alaska's Okmok volcano in 43 BCE and effects on the late Roman Republic and Ptolemaic Kingdom, P. Natl. Acad. Sci. USA, 117, 15443–15449, https://doi.org/10.1073/pnas.2002722117, 2020.
McLaughlin, R., Hannah, E., and Coyle-McClung, L.: Frequency analyses of
historical and archaeological datasets reveal the same pattern of declining
sociocultural activity in 9th to 10th century CE Ireland, Cliodynamics, 9,
1–24, https://doi.org/10.21237/C7clio9136654, 2018.
McLaughlin, T. R.: An archaeology of Ireland for the Information Age,
Emania, 25, 7–29, 2020.
Meklach Y., Camenisch C., Merzouki A., and García-Herrera R.: Potential of Arabic documentary sources for reconstructing past climate in the western
Mediterranean region from AD 680 to 1815, The Holocene, 31, 1662–1669, https://doi.org/10.1177/09596836211033202, 2021.
Melesse, A. M. (Ed.), Bekele, S., and McCornick, P.: Hydrology of the Niles in the face of land-use and climate dynamics, in Nile River Basin: Hydrology, Climate and Water Use, Springer Nature, Heidelberg, vii–xvii, ISBN: 9789400706880, 2011.
Ménégoz, M., Cassou, C., Swingedouw, D., Ruprich-Robert, Y.,
Bretonnière, P. A., and Doblas-Reyes, F.: Role of the Atlantic
Multidecadal Variability in modulating the climate response to a
Pinatubo-like volcanic eruption, Clim. Dynam., 51, 1863–1883,
https://doi.org/10.1007/s00382-017-3986-1, 2018.
Mitchell, E. A., Charman, D. J., and Warner, B. G.: Testate amoebae analysis in ecological and paleoecological studies of wetlands: past, present and
future, Biodivers. Conserv., 17, 2115–2137, https://doi.org/10.1007/s10531-007-9221-3, 2008.
Monteath, A. J., Teuten, A. E., Hughes, P. D. M., and Wastegård, S.: The
effects of the peat acid digestion protocol on geochemically and morphologically diverse tephra deposits, J. Quaternary Sci. 34, 269–274,
https://doi.org/10.1002/jqs.3104, 2019.
Muhs, D. R. and Budahn, J. R.: Geochemical evidence for the origin of late
Quaternary loess in central Alaska, Can. J. Earth Sci., 43, 323–337, https://doi.org/10.1139/e05-115, 2006.
Mullen, P. O.: An archaeological test of the effects of the White River Ash
eruptions, Arctic Anthropol., 49, 35–44, https://doi.org/10.1353/arc.2012.0013, 2012.
Neely III, R. R., Conley, A. J., Vitt, F., and Lamarque, J.-F.: A consistent prescription of stratospheric aerosol for both radiation and chemistry in the Community Earth System Model (CESM1), Geosci. Model Dev., 9, 2459–2470, https://doi.org/10.5194/gmd-9-2459-2016, 2016.
Neukom, R., Steiger, N., Gómez-Navarro, J. J., Wang, J., and Werner, J. P.: No evidence for globally coherent warm and cold periods over the
preindustrial Common Era, Nature, 571, 550–554, https://doi.org/10.1038/s41586-019-1401-2, 2019.
Newfield, T.: The contours of disease and hunger in Carolingian and early
Ottonian Europe (c.750-c.950 CE), unpublished PhD thesis, McGill University,
2010.
Newfield, T.: The contours, frequency and causation of subsistence crises
in Carolingian Europe (750–950), in: Crisis alimentarias en la Edad Media: Modelos, explicaciones y representaciones, edited by: Benito i Monclús, P., Milenio, Lleida, 117–172, 2013.
Oman, L., Robock, A., Stenchikov, G. L., and Thordarson, T.: High-latitude
eruptions cast shadow over the African monsoon and the flow of the Nile,
Geophys. Res. Lett., 33, L18711, https://doi.org/10.1029/2006GL027665, 2006.
Oppenheimer, C., Wacker, L., Xu, J., Galvan, J. D., Stoffel, M., Guillet,
S., Corona, C., Sigl, M., Di Cosmo, N., Hajdas, I., Pan, B., Breuker, R.,
Schneider, L., Esper, J., Fei, J., Hammond, J. O. S., and Büntgen, U.:
Multi-proxy dating the “Millennium Eruption” of Changbaishan to late 946 CE, Quaternary Sci. Rev., 158, 164–171, https://doi.org/10.1016/j.quascirev.2016.12.024, 2017.
Oppenheimer, C., Orchard, A., Stoffel, M., Newfield, T. P., Guillet, S.,
Corona, C., Sigl, M., Di Cosmo, N., and Büntgen, U.: The Eldgjá
eruption: timing, long-range impacts and influence on the Christianisation
of Iceland, Climatic Change, 147, 369–381, https://doi.org/10.1007/s10584-018-2171-9, 2018.
Patterson, R. T., Crann, C. A., Cutts, J. A., Mustaphi, C. J. C., Nasser, N.
A., Macumber, A. L., Galloway, J. M., Swindles, G. T., and Falck, H.: New
occurrences of the White River Ash (east lobe) in Subarctic Canada and
utility for estimating freshwater reservoir effect in lake sediment archives, Palaeogeogr. Palaeocl., 477, 1–9, https://doi.org/10.1016/j.palaeo.2017.03.031, 2017.
Payne, R. and Blackford, J.: Distal volcanic impacts on peatlands:
palaeoecological evidence from Alaska, Quaternary Sci. Rev., 27, 2012–2030,
https://doi.org/10.1016/j.quascirev.2008.08.002, 2008.
Payne, R. J. and Mitchell, E. A.: How many is enough? Determining optimal
count totals for ecological and palaeoecological studies of testate amoebae,
J. Paleolimnol., 42, 483–495, https://doi.org/10.1007/s10933-008-9299-y, 2009.
Pilcher, J. R., Hall, V. A., and McCormac, F. G.: An outline
tephrochronology for the Holocene of the north of Ireland, J. Quaternary Sci., 11, 485–494 https://doi.org/10.1002/(SICI)1099-1417(199611/12)11:6<485::AID-JQS266>3.0.CO;2-T, 1996.
Pyle, D. M.: The thickness, volume and grainsize of tephra fall deposits, B. Volcanol., 51, 1–15, https://doi.org/10.1007/BF01086757, 1989.
Pyne O'Donnell, S. D. F., Hughes, P. D. M., Froese, D. G., Jensen, B. J. L., Kuehn, S. C., Mallon, G., Amesbury, M. J., Charman, D. J., Daley, T. J., Loader, N. J., Mauquoy, D., Street-Perrott, F.A., and Woodman-Ralph, J.: High-precision ultra-distal Holocene tephrochronology in North America, Quaternary Sci. Rev., 52, 6–11, https://doi.org/10.1016/j.quascirev.2012.07.024, 2012.
Raible, C. C., Broennimann, S., Auchmann, R., Brohan, P., Froelicher, T. L.,
Graf, H. F., Jones, P., Luterbacher, J., Muthers, S., Neukom, R., Robock,
A., Self, S., Sudrajat, A., Timmreck, C., and Wegmann, M.: Tambora 1815 as a
test case for high impact volcanic eruptions: Earth system effects, WIREs Clim Change, 7, 569–589, https://doi.org/10.1002/wcc.407, 2016.
Rainville, R. A.: Effects of the White River and Mazama tephras on
terrestrial and aquatic palaeoenvironments in western Subarctic Canada, and
implications for past human populations, PhD dissertation, University
of Calgary, http://hdl.handle.net/11023/2740 (last access: 12 May 2022), 2016.
Reimer, P. J., Austin, W. E. N., Bard, E., Bayliss, A., Blackwell, P. G., Bronk Ramsey, C., Butzin, M., Cheng, H., Edwards, R. L., Friedrich, M., Grootes, P. M., Guilderson, T. P., Hajdas, I., Heaton, T. J., Hogg, A. G., Hughen, K. A., Kromer, B., Manning, S. W., Muscheler, R., Palmer, J. G., Pearson, C., van der Plicht, J., Reimer, R. W., Richards, D. A., Scott, E. M., Southon, J. R., Turnery, C. S. M., Wacker, L., Adolphi, F., Büntgen, U., Capano, M., Fahrni, S. M., Fogtmann-Schulz, A., Friedrich, R., Kohler, P., Kudsk, S., Miyake, F., Olsen, J., Reinig, F., Sakamoto, M., Sookdeo, A., and Talamo, S.: The IntCal20 northern hemisphere radiocarbon age calibration curve (0–55 cal kBP), Radiocarbon, 62, 725–757, https://doi.org/10.1017/RDC.2020.41, 2020.
Richter, D. H., Preece, S. J., McGimsey, R. G., and Westgate, J. A.: Mount
Churchill, Alaska: The source of the late Holocene White River Ash, Can.
J. Earth Sci., 32, 741–748, https://doi.org/10.1139/e95-063, 1995.
Robock, A. and Liu, Y.: The volcanic signal in Goddard Institute for Space
Studies three-dimensional model simulations, J. Climate, 7, 44–55,
https://doi.org/10.1175/1520-0442(1994)007<0044:TVSIGI>2.0.CO;2, 1994.
Said, R.: The River Nile: Geology, Hydrology and Utilization, Oxford, https://doi.org/10.1002/(SICI)1099-1646(199611)12:6<633::AID-RRR383>3.0.CO;2-D, 1993.
Schmidt, A., Mills, M. J., Ghan, S., Gregory, J. M., Allan, R. P., Andrews,
T., Bardeen, C. G., Conley, A., Forster, P. M., Gettelman, A., and Portmann,
R. W.: Volcanic radiative forcing from 1979 to 2015, J. Geophys. Res.-Atmos., 123, 12491–12508, https://doi.org/10.1029/2018JD028776, 2018.
Schneider, T., Bischoff, T., and Płotka, H.: Physics of changes in
synoptic midlatitude temperature variability, J. Climate, 28, 2312–2331,
https://doi.org/10.1175/JCLI-D-14-00632.1, 2015.
Shuman, B. N., Routson, C., McKay, N., Fritz, S., Kaufman, D., Kirby, M. E., Nolan, C., Pederson, G. T., and St-Jacques, J.-M.: Placing the Common Era in a Holocene context: millennial to centennial patterns and trends in the hydroclimate of North America over the past 2000 years, Clim. Past, 14, 665–686, https://doi.org/10.5194/cp-14-665-2018, 2018.
Sigl, M., McConnell, J. R., Layman, L., Maselli, O., McGwire, K., Pasteris,
D., Dahl-Jensen, D., Steffensen, J. P., Vinther, B., Edwards, R., and
Mulvaney, R.: A new bipolar ice core record of volcanism from WAIS Divide
and NEEM and implications for climate forcing of the last 2000 years, J.
Geophys. Res.-Atmos., 118, 1151–1169, https://doi.org/10.1029/2012JD018603, 2013.
Sigl, M., McConnell, J. R., Toohey, M., Curran, M., Das, S. B., Edwards, R.,
Isaksson, E., Kawamura, K., Kipfstuhl, S., Kruger, K., Layman, L., Maselli,
O. J., Motizuki, Y., Motoyama, H., Pasteris, D. R., and Severi, M.: Insights
from Antarctica on volcanic forcing during the Common Era, Nat. Clim.
Change, 4, 693–697, https://doi.org/10.1038/nclimate2293, 2014.
Sigl, M., Winstrup, M., McConnell, J. R., Welten, K. C., Plunkett, G.,
Ludlow, F., Büntgen, U., Caffee, M., Chellman, N., Dahl-Jensen, D.,
Fischer, H., Kipfstuhl, S., Kostick, C., Maselli, O. J., Mekhaldi, F.,
Mulvaney, R., Muscheler, R., Pasteris, D. R., Pilcher, J. R., Salzer, M.,
Schupbach, S., Steffensen, J. P., Vinther, B. M., and Woodruff, T. E.:
Timing and climate forcing of volcanic eruptions for the past 2,500 years,
Nature, 523, 543–549, https://doi.org/10.1038/nature14565, 2015.
Sigl, M., Toohey, M., McConnell, J. R., Cole-Dai, J., and Severi, M.: HolVol:
Reconstructed volcanic stratospheric sulfur injections and aerosol optical
depth for the Holocene (9500 BCE to 1900 CE), PANGAEA [data set], https://doi.org/10.1594/PANGAEA.928646, 2021.
Singh, R., Tsigaridis, K., LeGrande, A. N., Ludlow, F., and Manning, J. G.: Investigating hydroclimatic impacts of the 168–158 BCE volcanic quartet and their relevance to the Nile River basin and Egyptian history, Clim. Past Discuss. [preprint], https://doi.org/10.5194/cp-2022-25, in review, 2022.
Somers, R. M.: The End of the T’ang, in: The Cambridge History of China, edited by: Twitchett, D., Cambridge University Press, Cambridge, 682–789, 1979.
Staunton-Sykes, J., Aubry, T. J., Shin, Y. M., Weber, J., Marshall, L. R., Luke Abraham, N., Archibald, A., and Schmidt, A.: Co-emission of volcanic sulfur and halogens amplifies volcanic effective radiative forcing, Atmos. Chem. Phys., 21, 9009–9029, https://doi.org/10.5194/acp-21-9009-2021, 2021.
Stenchikov, G., Hamilton, K., Stouffer, R., Robock, A., Ramaswamy, V.,
Santer, B., and Graf, H.: Arctic oscillation response to volcanic eruptions
in the IPCC AR4 climate models, J. Geophys. Res, 111, D07107, https://doi.org/10.1029/2005JD006286, 2006.
Stoffel, M., Khodri, M., Corona, C., Guillet, S., Poulain, V., Bekki, S.,
Guiot, J., Luckman, B.H., Oppenheimer, C., Lebas, N., Beniston, M., and
Masson-Delmotte, V.: Estimates of volcanic-induced cooling in the Northern
Hemisphere over the past 1,500 years, Nat. Geosci., 8, 784–788,
https://doi.org/10.1038/ngeo2526, 2015.
Sun, C., Plunkett, G., Liu, J., Zhao, H., Sigl, M., McConnell, J. R.,
Pilcher, J. R., Vinther, B., Steffensen, J. P., and Hall, V.: Ash from
Changbaishan Millennium eruption recorded in Greenland ice: Implications for
determining the eruption's timing and impact, Geophys. Res. Lett., 41,
694–701, https://doi.org/10.1002/2013GL058642, 2014.
Swindles, G. T., Blundell, A., Roe, H. M., and Hall, V. A.: A 4500-year proxy
climate record from peatlands in the North of Ireland: the identification of
widespread summer `drought phases'?, Quaternary Sci. Rev., 29, 13–14,
https://doi.org/10.1016/j.quascirev.2009.01.003, 2010.
Swindles, G. T., Morris, P. J., Baird, A. J., Blaauw, M., and Plunkett, G.:
Ecohydrological feedbacks confound peat-based climate reconstructions,
Geophys. Res. Lett., 39, L11401, https://doi.org/10.1029/2012GL051500, 2012.
Swindles, G. T., Holden, J., Raby, C. L., Turner, T. E., Blundell, A.,
Charman, D. J., Menberu, M. W., and Kløve, B.: Testing peatland
water-table depth transfer functions using high-resolution hydrological
monitoring data, Quaternary Sci. Rev., 120, 107–117,
https://doi.org/10.1016/j.quascirev.2015.04.019, 2015.
Thomason, L. W., Ernest, N., Millán, L., Rieger, L., Bourassa, A., Vernier, J.-P., Manney, G., Luo, B., Arfeuille, F., and Peter, T.: A global space-based stratospheric aerosol climatology: 1979–2016, Earth Syst. Sci. Data, 10, 469–492, https://doi.org/10.5194/essd-10-469-2018, 2018.
Timmreck, C., Toohey, M., Zanchettin, D., Brönnimann, S., Lundstad, E., and Wilson, R.: The unidentified eruption of 1809: a climatic cold case, Clim. Past, 17, 1455–1482, https://doi.org/10.5194/cp-17-1455-2021, 2021.
Toohey, M. and Sigl, M.: Volcanic stratospheric sulfur injections and aerosol optical depth from 500 BCE to 1900 CE, Earth Syst. Sci. Data, 9, 809–831, https://doi.org/10.5194/essd-9-809-2017, 2017.
Toohey, M., Stevens, B., Schmidt, H., and Timmreck, C.: Easy Volcanic Aerosol (EVA v1.0): an idealized forcing generator for climate simulations, Geosci. Model Dev., 9, 4049–4070, https://doi.org/10.5194/gmd-9-4049-2016, 2016.
Toohey, M., Krüger, K., Schmidt, H., Timmreck, C., Sigl, M., Stoffel,
M., and Wilson, R.: Disproportionately strong climate forcing from
extratropical explosive volcanic eruptions, Nat. Geosci., 12, 100–107,
https://doi.org/10.1594/WDCC/eVolv2k_v2, 2019.
Usoskin, I. G., Hulot, G., Gallet, Y., Roth, R., Licht, A., Joos, F.,
Kovaltsov, G. A., Thébault, E., and Khokhlov, A.: Evidence for distinct
modes of solar activity, Astron. Astrophys., 562, L10, https://doi.org/10.1051/0004-6361/201423391, 2014.
Usoskin, I. G., Gallet, Y., Lopes, F., Kovaltsov, G. A., and Hulot, G.: Solar
activity during the Holocene: the Hallstatt cycle and its consequence for
grand minima and maxima, Astron. Astrophys., 587, A150, https://doi.org/10.1051/0004-6361/201527295, 2016.
Vernier, J.-P., Fairlie, T. D., Deshler, T., Natarajan, M., Knepp, T., Foster, K., Wienhold, F. G., Bedka, K. M., Thomason, L., and Trepte, C.: In
situ and space-based observations of the Kelud volcanic plume: The persistence of ash in the lower stratosphere, J. Geophys. Res.-Atmos., 121,
11104–11118, https://doi.org/10.1002/2016JD025344, 2016.
Vieira, L. E. A., Solanki, S. K., Krivova, N. A., and Usoskin, I.: Evolution
of the solar irradiance during the Holocene, Astron. Astrophys.,
531, A6, https://doi.org/10.1051/0004-6361/201015843, 2011.
Vinther, B. M., Clausen, H. B., Johnsen, S. J., Rasmussen, S. O., Andersen,
K. K., Buchardt, S. L., Dahl-Jensen, D., Seierstad, I. K.,
Siggaard-Andersen, M.-L., Steffensen, J. P., Svensson, A., Olsen, J., and
Heinemeier, J.: A synchronized dating of three Greenland ice cores
throughout the Holocene, J. Geophys. Res., 111, D13102,
https://doi.org/10.1029/2005JD006921, 2006.
Wade, D. C., Vidal, C. M., Abraham, N. L., Dhomse, S., Griffiths, P. T.,
Keeble, J., Mann, G., Marshall, L., Schmidt, A., and Archibald, A. T.:
Reconciling the climate and ozone response to the 1257 CE Mount Samalas
eruption, P. Natl. Acad. Sci. USA, 117, 26651–26659,
https://doi.org/10.1073/pnas.1919807117, 2020.
Watson, E. J., Kołaczek, P., Słowiński, M., Swindles, G. T., Marcisz, K., Gałka, M., and Lamentowicz, M.: First discovery of Holocene Alaskan
and Icelandic tephra in Polish peatlands, J. Quaternary Sci. 32, 457–462,
https://doi.org/10.1002/jqs.2945, 2017a.
Watson, E. J., Swindles, G. T., Lawson, I. T., Savov, I. P., and Wastegård, S.: The presence of Holocene cryptotephra in Wales and southern England, J. Quaternary Sci., 32, 493–500, https://doi.org/10.1002/jqs.2942, 2017b.
West, K. D. and Donaldson, J. A.: Evidence for winter eruption of the White
River Ash (eastern lobe), Yukon Territory, Canada, 29 May–2 June 2000, Geocanada 2000 – The
Millennium Geoscience Summit, Conference CD, 2000.
White, S., Moreno-Chamarro, E., Zanchettin, D., Huhtamaa, H., Degroot, D., Stoffel, M., and Corona, C.: The 1600 CE Huaynaputina eruption as a possible trigger for persistent cooling in the North Atlantic region, Clim. Past, 18, 739–757, https://doi.org/10.5194/cp-18-739-2022, 2022.
Wilson, R., Anchukaitis, K., Briffa, K. R., Büntgen, U., Cook, E.,
D'Arrigo, R., Davi, N., Esper, J., Frank, D., Gunnarson, B., Hegerl, G.,
Helama, D., Klesse, S., Krusic, P. J., Linderholm, H. W., Myglan, V., Osborn,
T. J., Rydval, M., Schneider, L., Schurer, A., Wiles, G., Zhang, P., and
Zorita, E.: Last millennium northern hemisphere summer temperatures from
tree rings: Part 1: The long term context, Quaternary Sci. Rev., 138, 1–18, https://doi.org/10.1016/j.quascirev.2015.12.005, 2016.
Woodland, W. A., Charman, D. J., and Sims, P. C.: Quantitative estimates of
water tables and soil moisture in Holocene peatlands from testate amoebae,
Holocene, 8, 261–273, https://doi.org/10.1191/095968398667004497, 1998.
Zhang, D.: Zhongguo san qian nian qi xiang ji lu zong ji (Nanjing 2004), 1, Nanjing Shi, 363–364, ISBN: 7806434682, 2004.
Zhong, Y., Jahn, A., Miller, G. H., and Geirsdottir, A.: Asymmetric Cooling
of the Atlantic and Pacific Arctic During the Past Two Millennia: A Dual
Observation-Modeling Study, Geophys. Res. Lett., 45, 12497–12505, https://doi.org/10.1029/2018GL079447, 2018.
Zhu, Y., Toon, O. B., Jensen, E. J., Bardeen, C. G., Mills, M. J., Tolbert,
M. A., Yu, P., and Woods, S.: Persisting volcanic ash particles impact stratospheric SO2 lifetime and aerosol optical properties, Nat. Commun., 11, 4526, https://doi.org/10.1038/s41467-020-18352-5, 2020.
Zhuo, Z., Gao, C., and Pan, Y.: Proxy evidence for China's monsoon
precipitation response to volcanic aerosols over the past seven centuries,
J. Geophys. Res.-Atmos., 119, 6638–6652, https://doi.org/10.1002/2013JD021061, 2014.
Short summary
We assess the climatic and societal impact of the 852/3 CE Alaska Mount Churchill eruption using environmental reconstructions, historical records and climate simulations. The eruption is associated with significant Northern Hemisphere summer cooling, despite having only a moderate sulfate-based climate forcing potential; however, evidence of a widespread societal response is lacking. We discuss the difficulties of confirming volcanic impacts of a single eruption even when it is precisely dated.
We assess the climatic and societal impact of the 852/3 CE Alaska Mount Churchill eruption using...
