Articles | Volume 17, issue 6
https://doi.org/10.5194/cp-17-2583-2021
© Author(s) 2021. 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-17-2583-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
A pseudoproxy assessment of why climate field reconstruction methods perform the way they do in time and space
Sooin Yun
CORRESPONDING AUTHOR
Department of Statistics, University of Illinois at Urbana-Champaign, Champaign, Illinois, USA
Jason E. Smerdon
Lamont-Doherty Earth Observatory, Columbia University, Palisades, New York, USA
Bo Li
Department of Statistics, University of Illinois at Urbana-Champaign, Champaign, Illinois, USA
Xianyang Zhang
Department of Statistics, Texas A&M University, College Station, Texas, USA
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Pedro José Roldán-Gómez, Jesús Fidel González-Rouco, Jason E. Smerdon, and Félix García-Pereira
Clim. Past, 19, 2361–2387, https://doi.org/10.5194/cp-19-2361-2023, https://doi.org/10.5194/cp-19-2361-2023, 2023
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Analyses of reconstructed data suggest that the precipitation and availability of water have evolved in a similar way during the Last Millennium in different regions of the world, including areas of North America, Europe, the Middle East, southern Asia, northern South America, East Africa and the Indo-Pacific. To confirm this link between distant regions and to understand the reasons behind it, the information from different reconstructed and simulated products has been compiled and analyzed.
Rebecca Orrison, Mathias Vuille, Jason E. Smerdon, James Apaéstegui, Vitor Azevedo, Jose Leandro P. S. Campos, Francisco W. Cruz, Marcela Eduarda Della Libera, and Nicolás M. Stríkis
Clim. Past, 18, 2045–2062, https://doi.org/10.5194/cp-18-2045-2022, https://doi.org/10.5194/cp-18-2045-2022, 2022
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We evaluated the South American Summer Monsoon over the last millennium and dynamically interpreted the principal modes of variability. We find the spatial patterns of the monsoon are an intrinsic feature of the climate modulated by external forcings. Multi-centennial mean state departures during the Medieval Climate Anomaly and Little Ice Age show regionally coherent patterns of hydroclimatic change in both a multi-archive network of oxygen isotope records and isotope-enabled climate models.
Pedro José Roldán-Gómez, Jesús Fidel González-Rouco, Camilo Melo-Aguilar, and Jason E. Smerdon
Clim. Past, 16, 1285–1307, https://doi.org/10.5194/cp-16-1285-2020, https://doi.org/10.5194/cp-16-1285-2020, 2020
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This work analyses the behavior of atmospheric dynamics and hydroclimate in climate simulations of the last millennium. In particular, how external forcing factors, like solar and volcanic activity and greenhouse gas emissions, impact variables like temperature, pressure, wind, precipitation, and soil moisture is assessed. The results of these analyses show that changes in the forcing could alter the zonal circulation and the intensity and distribution of monsoons and convergence zones.
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.
Nathan J. Steiger and Jason E. Smerdon
Clim. Past, 13, 1435–1449, https://doi.org/10.5194/cp-13-1435-2017, https://doi.org/10.5194/cp-13-1435-2017, 2017
H. Beltrami, G. S. Matharoo, L. Tarasov, V. Rath, and J. E. Smerdon
Clim. Past, 10, 1693–1706, https://doi.org/10.5194/cp-10-1693-2014, https://doi.org/10.5194/cp-10-1693-2014, 2014
J. Wang, J. Emile-Geay, D. Guillot, J. E. Smerdon, and B. Rajaratnam
Clim. Past, 10, 1–19, https://doi.org/10.5194/cp-10-1-2014, https://doi.org/10.5194/cp-10-1-2014, 2014
Related subject area
Subject: Climate Modelling | Archive: Historical Records | Timescale: Centennial-Decadal
Documentary evidence of urban droughts and their impact in the eastern Netherlands: the cases of Deventer and Zutphen, 1500–1795
The climate in Poland (central Europe) in the first half of the last millennium, revisited
Climatic and societal impacts in Scandinavia following the 536 and 540 CE volcanic double event
A Bayesian approach to historical climatology for the Burgundian Low Countries in the 15th century
Was there a volcanic-induced long-lasting cooling over the Northern Hemisphere in the mid-6th–7th century?
China's historical record when searching for tropical cyclones corresponding to Intertropical Convergence Zone (ITCZ) shifts over the past 2 kyr
On-line and off-line data assimilation in palaeoclimatology: a case study
Modeling of severe persistent droughts over eastern China during the last millennium
Dániel Johannes Moerman
Clim. Past, 20, 1721–1734, https://doi.org/10.5194/cp-20-1721-2024, https://doi.org/10.5194/cp-20-1721-2024, 2024
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This article provides a first look into the impact of drought in two cities in the eastern Netherlands from 1500 to 1795 on the basis of municipal records. It concludes that the impact of drought was sometimes similar but also different for both cities when focusing on specific aspects, such as water shortage and navigation. This strengthens the view that the impact of droughts could differ highly on a local level, which necessitates more emphasis on regional and local drought reconstructions.
Rajmund Przybylak, Piotr Oliński, Marcin Koprowski, Elżbieta Szychowska-Krąpiec, Marek Krąpiec, Aleksandra Pospieszyńska, and Radosław Puchałka
Clim. Past, 19, 2389–2408, https://doi.org/10.5194/cp-19-2389-2023, https://doi.org/10.5194/cp-19-2389-2023, 2023
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The present paper upgrades our knowledge of Poland’s climate in the period 1001–1500 using multiproxy data. Four new climate reconstructions have been constructed – three based on dendrochronological data (since the 12th century) and one on documentary evidence (since the 15th century). The results should help improve the knowledge of climate change in Europe, particularly in central Europe.
Evelien van Dijk, Ingar Mørkestøl Gundersen, Anna de Bode, Helge Høeg, Kjetil Loftsgarden, Frode Iversen, Claudia Timmreck, Johann Jungclaus, and Kirstin Krüger
Clim. Past, 19, 357–398, https://doi.org/10.5194/cp-19-357-2023, https://doi.org/10.5194/cp-19-357-2023, 2023
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The mid-6th century was one of the coldest periods of the last 2000 years as characterized by great societal changes. Here, we study the effect of the volcanic double event in 536 CE and 540 CE on climate and society in southern Norway. The combined climate and growing degree day models and high-resolution pollen and archaeological records reveal that the northern and western sites are vulnerable to crop failure with possible abandonment of farms, whereas the southeastern site is more resilient.
Chantal Camenisch, Fernando Jaume-Santero, Sam White, Qing Pei, Ralf Hand, Christian Rohr, and Stefan Brönnimann
Clim. Past, 18, 2449–2462, https://doi.org/10.5194/cp-18-2449-2022, https://doi.org/10.5194/cp-18-2449-2022, 2022
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We present a novel approach to assimilate climate information contained in chronicles and annals from the 15th century to generate climate reconstructions of the Burgundian Low Countries, taking into account uncertainties associated with the descriptions of narrative sources. Our study aims to be a first step towards a more quantitative use of available information contained in historical texts, showing how Bayesian inference can help the climate community with this endeavor.
Evelien van Dijk, Johann Jungclaus, Stephan Lorenz, Claudia Timmreck, and Kirstin Krüger
Clim. Past, 18, 1601–1623, https://doi.org/10.5194/cp-18-1601-2022, https://doi.org/10.5194/cp-18-1601-2022, 2022
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A double volcanic eruption in 536 and 540 CE caused one of the coldest decades during the last 2000 years. We analyzed new climate model simulations from that period and found a cooling of up to 2°C and a sea-ice extent up to 200 km further south. Complex interactions between sea ice and ocean circulation lead to a reduction in the northward ocean heat transport, which makes the sea ice extend further south; this in turn leads to a surface cooling up to 20 years after the eruptions.
Huei-Fen Chen, Yen-Chu Liu, Chih-Wen Chiang, Xingqi Liu, Yu-Min Chou, and Hui-Juan Pan
Clim. Past, 15, 279–289, https://doi.org/10.5194/cp-15-279-2019, https://doi.org/10.5194/cp-15-279-2019, 2019
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China’s historical typhoon data show that (1) the tracks of typhoons correspond to the north–southward migration of the Intertropical Convergence Zone and phase of the North Atlantic Oscillation, which show a nearly 30-year and a 60-year cycle during the Little Ice Age (LIA) and (2) paleotyphoons made landfall in mainland China 1 month earlier during the Medieval Warm Period than during the LIA.
A. Matsikaris, M. Widmann, and J. Jungclaus
Clim. Past, 11, 81–93, https://doi.org/10.5194/cp-11-81-2015, https://doi.org/10.5194/cp-11-81-2015, 2015
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We compare an off-line and an on-line ensemble-based data assimilation method, for the climate of the 17th century. Both schemes perform better than the simulations without DA, and similar skill on the continental and hemispheric scales is found. This indicates either a lack of control of the slow components in our setup or a lack of skill in the information propagation on decadal timescales. The temporal consistency of the analysis in the on-line method makes it generally more preferable.
Y. Peng, C. Shen, H. Cheng, and Y. Xu
Clim. Past, 10, 1079–1091, https://doi.org/10.5194/cp-10-1079-2014, https://doi.org/10.5194/cp-10-1079-2014, 2014
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Short summary
Climate field reconstructions (CFRs) estimate spatiotemporal climate conditions hundreds to thousands of years into the past. Assessing CFR skills is critical for improving their interpretation and ultimately for deriving better CFR estimates. We apply new methods for assessing spatiotemporal skill using formalized null hypotheses to derive a detailed assessment of why CFR skill varies across multiple methods, with implications for improving future CFR estimates.
Climate field reconstructions (CFRs) estimate spatiotemporal climate conditions hundreds to...