Articles | Volume 14, issue 7
https://doi.org/10.5194/cp-14-1051-2018
© Author(s) 2018. 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-14-1051-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
12 Jul 2018
Research article |
| 12 Jul 2018
| 12 Jul 2018
Rapid increase in simulated North Atlantic dust deposition due to fast change of northwest African landscape during the Holocene
Sabine Egerer
CORRESPONDING AUTHOR
Max Planck Institute for Meteorology, Bundesstraße 53, 20146 Hamburg, Germany
International Max Planck Research School on Earth System Modelling, Bundesstraße 53, 20146 Hamburg, Germany
Martin Claussen
Max Planck Institute for Meteorology, Bundesstraße 53, 20146 Hamburg, Germany
Center for Earth System Research and Sustainability, Universität Hamburg, Bundesstraße 53, 20146 Hamburg, Germany
Christian Reick
Max Planck Institute for Meteorology, Bundesstraße 53, 20146 Hamburg, Germany
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Clim. Past, 12, 1009–1027, https://doi.org/10.5194/cp-12-1009-2016, https://doi.org/10.5194/cp-12-1009-2016, 2016
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We demonstrate for the first time the direct link between dust accumulation in marine sediment cores and Saharan land surface by simulating the mid-Holocene and pre-industrial dust cycle as a function of Saharan land surface cover and atmosphere-ocean conditions using the coupled atmosphere-aerosol model ECHAM6-HAM2.1. Mid-Holocene surface characteristics, including vegetation cover and lake surface area, are derived from proxy data and simulations.
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We simulate the last glacial cycle with a comprehensive model of the Earth system and investigate vegetation cover change in northern Africa during the last four African Humid Periods (AHPs). We find a common pattern of vegetation change and relate it with climatic factors in order to discuss how vegetation might have evolved during even older AHPs. This scaling relationship we find according to past AHPs fails to account for projected changes in northern Africa under strong greenhouse gas warming.
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Clim. Past, 20, 1595–1613, https://doi.org/10.5194/cp-20-1595-2024, https://doi.org/10.5194/cp-20-1595-2024, 2024
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We close the terrestrial water cycle across the Sahara and Sahel by integrating a new endorheic-lake model into a climate model. A factor analysis of mid-Holocene simulations shows that both dynamic lakes and dynamic vegetation individually contribute to a precipitation increase over northern Africa that is collectively greater than that caused by the interaction between lake and vegetation dynamics. Thus, the lake–vegetation interaction causes a relative drying response across the entire Sahel.
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Ulrike Port, Martin Claussen, and Victor Brovkin
Earth Syst. Dynam., 7, 535–547, https://doi.org/10.5194/esd-7-535-2016, https://doi.org/10.5194/esd-7-535-2016, 2016
Victoria Naipal, Christian Reick, Kristof Van Oost, Thomas Hoffmann, and Julia Pongratz
Earth Surf. Dynam., 4, 407–423, https://doi.org/10.5194/esurf-4-407-2016, https://doi.org/10.5194/esurf-4-407-2016, 2016
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Sabine Egerer, Martin Claussen, Christian Reick, and Tanja Stanelle
Clim. Past, 12, 1009–1027, https://doi.org/10.5194/cp-12-1009-2016, https://doi.org/10.5194/cp-12-1009-2016, 2016
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T. Brücher, M. Claussen, and T. Raddatz
Earth Syst. Dynam., 6, 769–780, https://doi.org/10.5194/esd-6-769-2015, https://doi.org/10.5194/esd-6-769-2015, 2015
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U. Port and M. Claussen
Clim. Past, 11, 1563–1574, https://doi.org/10.5194/cp-11-1563-2015, https://doi.org/10.5194/cp-11-1563-2015, 2015
V. P. Groner, M. Claussen, and C. Reick
Clim. Past, 11, 1361–1374, https://doi.org/10.5194/cp-11-1361-2015, https://doi.org/10.5194/cp-11-1361-2015, 2015
V. Naipal, C. Reick, J. Pongratz, and K. Van Oost
Geosci. Model Dev., 8, 2893–2913, https://doi.org/10.5194/gmd-8-2893-2015, https://doi.org/10.5194/gmd-8-2893-2015, 2015
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We adjusted the topographical and rainfall erosivity factors that are the triggers of erosion in the Revised Universal Soil Loss Equation (RUSLE) model to make the model better applicable at coarse resolution on a global scale. The adjusted RUSLE model compares much better to current high resolution estimates of soil erosion in the USA and Europe. It therefore provides a basis for estimating past and future global impacts of soil erosion on climate with the use of Earth system models.
U. Port, M. Claussen, and V. Brovkin
Clim. Past Discuss., https://doi.org/10.5194/cpd-11-997-2015, https://doi.org/10.5194/cpd-11-997-2015, 2015
Revised manuscript not accepted
M. Baudena, S. C. Dekker, P. M. van Bodegom, B. Cuesta, S. I. Higgins, V. Lehsten, C. H. Reick, M. Rietkerk, S. Scheiter, Z. Yin, M. A. Zavala, and V. Brovkin
Biogeosciences, 12, 1833–1848, https://doi.org/10.5194/bg-12-1833-2015, https://doi.org/10.5194/bg-12-1833-2015, 2015
A. Dallmeyer, M. Claussen, N. Fischer, K. Haberkorn, S. Wagner, M. Pfeiffer, L. Jin, V. Khon, Y. Wang, and U. Herzschuh
Clim. Past, 11, 305–326, https://doi.org/10.5194/cp-11-305-2015, https://doi.org/10.5194/cp-11-305-2015, 2015
S. Wilkenskjeld, S. Kloster, J. Pongratz, T. Raddatz, and C. H. Reick
Biogeosciences, 11, 4817–4828, https://doi.org/10.5194/bg-11-4817-2014, https://doi.org/10.5194/bg-11-4817-2014, 2014
J. Pongratz, C. H. Reick, R. A. Houghton, and J. I. House
Earth Syst. Dynam., 5, 177–195, https://doi.org/10.5194/esd-5-177-2014, https://doi.org/10.5194/esd-5-177-2014, 2014
F. S. E. Vamborg, V. Brovkin, and M. Claussen
Earth Syst. Dynam., 5, 89–101, https://doi.org/10.5194/esd-5-89-2014, https://doi.org/10.5194/esd-5-89-2014, 2014
H. F. Goessling and C. H. Reick
Hydrol. Earth Syst. Sci., 17, 4133–4142, https://doi.org/10.5194/hess-17-4133-2013, https://doi.org/10.5194/hess-17-4133-2013, 2013
H. F. Goessling and C. H. Reick
Atmos. Chem. Phys., 13, 5567–5585, https://doi.org/10.5194/acp-13-5567-2013, https://doi.org/10.5194/acp-13-5567-2013, 2013
M. Claussen, K. Selent, V. Brovkin, T. Raddatz, and V. Gayler
Biogeosciences, 10, 3593–3604, https://doi.org/10.5194/bg-10-3593-2013, https://doi.org/10.5194/bg-10-3593-2013, 2013
Related subject area
Subject: Climate Modelling | Archive: Modelling only | Timescale: Holocene
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Andrew L. Lowry and Hamish A. McGowan
Clim. Past, 20, 2309–2325, https://doi.org/10.5194/cp-20-2309-2024, https://doi.org/10.5194/cp-20-2309-2024, 2024
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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.
Katharina D. Six, Uwe Mikolajewicz, and Gerhard Schmiedl
Clim. Past, 20, 1785–1816, https://doi.org/10.5194/cp-20-1785-2024, https://doi.org/10.5194/cp-20-1785-2024, 2024
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We use a physical and biogeochemical ocean model of the Mediterranean Sea to obtain a picture of the Last Glacial Maximum. The shallowing of the Strait of Gibraltar leads to a shallower pycnocline and more efficient nutrient export. Consistent with the sediment data, an increase in organic matter deposition is simulated, although this is based on lower biological production. This unexpected but plausible result resolves the apparent contradiction between planktonic and benthic proxy data.
Marco Gaetani, Gabriele Messori, Francesco S. R. Pausata, Shivangi Tiwari, M. Carmen Alvarez Castro, and Qiong Zhang
Clim. Past, 20, 1735–1759, https://doi.org/10.5194/cp-20-1735-2024, https://doi.org/10.5194/cp-20-1735-2024, 2024
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Palaeoclimate reconstructions suggest that, around 6000 years ago, a greening of the Sahara took place, accompanied by climate changes in the Northern Hemisphere at middle to high latitudes. In this study, a climate model is used to investigate how this drastic environmental change in the Sahara impacted remote regions. Specifically, climate simulations reveal significant modifications in atmospheric circulation over the North Atlantic, affecting North American and European climates.
Nora Farina Specht, Martin Claussen, and Thomas Kleinen
Clim. Past, 20, 1595–1613, https://doi.org/10.5194/cp-20-1595-2024, https://doi.org/10.5194/cp-20-1595-2024, 2024
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We close the terrestrial water cycle across the Sahara and Sahel by integrating a new endorheic-lake model into a climate model. A factor analysis of mid-Holocene simulations shows that both dynamic lakes and dynamic vegetation individually contribute to a precipitation increase over northern Africa that is collectively greater than that caused by the interaction between lake and vegetation dynamics. Thus, the lake–vegetation interaction causes a relative drying response across the entire Sahel.
Putian Zhou, Zhengyao Lu, Jukka-Pekka Keskinen, Qiong Zhang, Juha Lento, Jianpu Bian, Twan van Noije, Philippe Le Sager, Veli-Matti Kerminen, Markku Kulmala, Michael Boy, and Risto Makkonen
Clim. Past, 19, 2445–2462, https://doi.org/10.5194/cp-19-2445-2023, https://doi.org/10.5194/cp-19-2445-2023, 2023
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A Green Sahara with enhanced rainfall and larger vegetation cover existed in northern Africa about 6000 years ago. Biosphere–atmosphere interactions are found to be critical to explaining this wet period. Based on modeled vegetation reconstruction data, we simulated dust emissions and aerosol formation, which are key factors in biosphere–atmosphere interactions. Our results also provide a benchmark of aerosol climatology for future paleo-climate simulation experiments.
Yibo Kang and Haijun Yang
Clim. Past, 19, 2013–2026, https://doi.org/10.5194/cp-19-2013-2023, https://doi.org/10.5194/cp-19-2013-2023, 2023
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We simulated the climate difference between the mid-Holocene (MH) and the preindustrial (PI) periods and quantified the effects of Earth orbital parameters (ORBs) and greenhouse gases (GHGs) on the climate difference. We think the insignificant difference in the Atlantic meridional overturning circulation between the MH and PI periods has resulted from the competing effects of the ORBs and the GHGs on the climate.
Yuheng Li, Kanon Kino, Alexandre Cauquoin, and Taikan Oki
Clim. Past, 19, 1891–1904, https://doi.org/10.5194/cp-19-1891-2023, https://doi.org/10.5194/cp-19-1891-2023, 2023
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Our study using the isotope-enabled climate model MIROC5-iso model shows that lakes may have contributed to the Green Sahara during the mid-Holocene period (6000 years ago). The lakes induced cyclonic circulation response, enhancing the near-surface monsoon westerly flow and potentially humidifying the northwestern Sahara with the stronger West African Monsoon moving northward. Our findings provide valuable insights into understanding the presence of the Green Sahara during this period.
Gustav Strandberg, Jie Chen, Ralph Fyfe, Erik Kjellström, Johan Lindström, Anneli Poska, Qiong Zhang, and Marie-José Gaillard
Clim. Past, 19, 1507–1530, https://doi.org/10.5194/cp-19-1507-2023, https://doi.org/10.5194/cp-19-1507-2023, 2023
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The impact of land use and land cover change (LULCC) on the climate around 2500 years ago is studied using reconstructions and models. The results suggest that LULCC impacted the climate in parts of Europe. Reconstructed LULCC shows up to 1.5 °C higher temperature in parts of Europe in some seasons. This relatively strong response implies that anthropogenic LULCC that had occurred by the late prehistoric period may have already affected the European climate by 2500 years ago.
Chris Brierley, Kaustubh Thirumalai, Edward Grindrod, and Jonathan Barnsley
Clim. Past, 19, 681–701, https://doi.org/10.5194/cp-19-681-2023, https://doi.org/10.5194/cp-19-681-2023, 2023
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Year-to-year variations in the weather conditions over the Indian Ocean have important consequences for the substantial fraction of the Earth's population that live near it. This work looks at how these variations respond to climate change – both past and future. The models rarely agree, suggesting a weak, uncertain response to climate change.
Dirk Nikolaus Karger, Michael P. Nobis, Signe Normand, Catherine H. Graham, and Niklaus E. Zimmermann
Clim. Past, 19, 439–456, https://doi.org/10.5194/cp-19-439-2023, https://doi.org/10.5194/cp-19-439-2023, 2023
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Here we present global monthly climate time series for air temperature and precipitation at 1 km resolution for the last 21 000 years. The topography at all time steps is created by combining high-resolution information on glacial cover from current and Last Glacial Maximum glacier databases with the interpolation of an ice sheet model and a coupling to mean annual temperatures from a global circulation model.
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.
Frank Arthur, Didier M. Roche, Ralph Fyfe, Aurélien Quiquet, and Hans Renssen
Clim. Past, 19, 87–106, https://doi.org/10.5194/cp-19-87-2023, https://doi.org/10.5194/cp-19-87-2023, 2023
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This paper simulates transcient Holocene climate in Europe by applying an interactive downscaling to the standard version of the iLOVECLIM model. The results show that downscaling presents a higher spatial variability in better agreement with proxy-based reconstructions as compared to the standard model, particularly in the Alps, the Scandes, and the Mediterranean. Our downscaling scheme is numerically cheap, which can perform kilometric multi-millennial simulations suitable for future studies.
Yiling Huo, William Richard Peltier, and Deepak Chandan
Clim. Past, 18, 2401–2420, https://doi.org/10.5194/cp-18-2401-2022, https://doi.org/10.5194/cp-18-2401-2022, 2022
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Understanding the hydrological changes on the Tibetan Plateau (TP) during the mid-Holocene (MH; a period with warmer summers than today) will help us understand expected future changes. This study analyses the hydroclimates over the headwater regions of three major rivers originating on the TP using dynamically downscaled climate simulations. Model–data comparisons show that the dynamic downscaling significantly improves both the present-day and MH regional climate simulations of the TP.
Huan Li, Hans Renssen, and Didier M. Roche
Clim. Past, 18, 2303–2319, https://doi.org/10.5194/cp-18-2303-2022, https://doi.org/10.5194/cp-18-2303-2022, 2022
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In past warm periods, the Sahara region was covered by vegetation. In this paper we study transitions from this
greenstate to the desert state we find today. For this purpose, we have used a global climate model coupled to a vegetation model to perform transient simulations. We analyzed the model results to assess the effect of vegetation shifts on the abruptness of the transition. We find that the vegetation feedback was more efficient during the last interglacial than during the Holocene.
Nicky M. Wright, Claire E. Krause, Steven J. Phipps, Ghyslaine Boschat, and Nerilie J. Abram
Clim. Past, 18, 1509–1528, https://doi.org/10.5194/cp-18-1509-2022, https://doi.org/10.5194/cp-18-1509-2022, 2022
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The Southern Annular Mode (SAM) is a major mode of climate variability. Proxy-based SAM reconstructions show changes that last millennium climate simulations do not reproduce. We test the SAM's sensitivity to solar forcing using simulations with a range of solar values and transient last millennium simulations with large-amplitude solar variations. We find that solar forcing can alter the SAM and that strong solar forcing transient simulations better match proxy-based reconstructions.
Nora Farina Specht, Martin Claussen, and Thomas Kleinen
Clim. Past, 18, 1035–1046, https://doi.org/10.5194/cp-18-1035-2022, https://doi.org/10.5194/cp-18-1035-2022, 2022
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Palaeoenvironmental records only provide a fragmentary picture of the lake and wetland extent in North Africa during the mid-Holocene. Therefore, we investigate the possible range of mid-Holocene precipitation changes caused by an estimated small and maximum lake extent and a maximum wetland extent. Results show a particularly strong monsoon precipitation response to lakes and wetlands over the Western Sahara and an increased monsoon precipitation when replacing lakes with vegetated wetlands.
Xiaoxu Shi, Martin Werner, Carolin Krug, Chris M. Brierley, Anni Zhao, Endurance Igbinosa, Pascale Braconnot, Esther Brady, Jian Cao, Roberta D'Agostino, Johann Jungclaus, Xingxing Liu, Bette Otto-Bliesner, Dmitry Sidorenko, Robert Tomas, Evgeny M. Volodin, Hu Yang, Qiong Zhang, Weipeng Zheng, and Gerrit Lohmann
Clim. Past, 18, 1047–1070, https://doi.org/10.5194/cp-18-1047-2022, https://doi.org/10.5194/cp-18-1047-2022, 2022
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Since the orbital parameters of the past are different from today, applying the modern calendar to the past climate can lead to an artificial bias in seasonal cycles. With the use of multiple model outputs, we found that such a bias is non-ignorable and should be corrected to ensure an accurate comparison between modeled results and observational records, as well as between simulated past and modern climates, especially for the Last Interglacial.
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.
Yiling Huo, William Richard Peltier, and Deepak Chandan
Clim. Past, 17, 1645–1664, https://doi.org/10.5194/cp-17-1645-2021, https://doi.org/10.5194/cp-17-1645-2021, 2021
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Regional climate simulations were constructed to more accurately capture regional features of the South and Southeast Asian monsoon during the mid-Holocene. Comparison with proxies shows that our high-resolution simulations outperform those with the coarser global model in reproducing the monsoon rainfall anomalies. Incorporating the Green Sahara climate conditions over northern Africa into our simulations further strengthens the monsoon precipitation and leads to better agreement with proxies.
Francesco S. R. Pausata, Gabriele Messori, Jayoung Yun, Chetankumar A. Jalihal, Massimo A. Bollasina, and Thomas M. Marchitto
Clim. Past, 17, 1243–1271, https://doi.org/10.5194/cp-17-1243-2021, https://doi.org/10.5194/cp-17-1243-2021, 2021
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Far-afield changes in vegetation such as those that occurred over the Sahara during the middle Holocene and the consequent changes in dust emissions can affect the intensity of the South Asian Monsoon (SAM) rainfall and the lengthening of the monsoon season. This remote influence is mediated by anomalies in Indian Ocean sea surface temperatures and may have shaped the evolution of the SAM during the termination of the African Humid Period.
Pascale Braconnot, Samuel Albani, Yves Balkanski, Anne Cozic, Masa Kageyama, Adriana Sima, Olivier Marti, and Jean-Yves Peterschmitt
Clim. Past, 17, 1091–1117, https://doi.org/10.5194/cp-17-1091-2021, https://doi.org/10.5194/cp-17-1091-2021, 2021
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We investigate how mid-Holocene dust reduction affects the Earth’s energetics from a suite of climate simulations. Our analyses confirm the peculiar role of the dust radiative effect over bright surfaces such as African deserts. We highlight a strong dependence on the dust pattern. The relative dust forcing between West Africa and the Middle East impacts the relative response of Indian and African monsoons and between the western tropical Atlantic and the Atlantic meridional circulation.
Gabriele Messori and Davide Faranda
Clim. Past, 17, 545–563, https://doi.org/10.5194/cp-17-545-2021, https://doi.org/10.5194/cp-17-545-2021, 2021
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The palaeoclimate community must both analyse large amounts of model data and compare very different climates. Here, we present a seemingly very abstract analysis approach that may be fruitfully applied to palaeoclimate numerical simulations. This approach characterises the dynamics of a given climate through a small number of metrics and is thus suited to face the above challenges.
Chris M. Brierley, Anni Zhao, Sandy P. Harrison, Pascale Braconnot, Charles J. R. Williams, David J. R. Thornalley, Xiaoxu Shi, Jean-Yves Peterschmitt, Rumi Ohgaito, Darrell S. Kaufman, Masa Kageyama, Julia C. Hargreaves, Michael P. Erb, Julien Emile-Geay, Roberta D'Agostino, Deepak Chandan, Matthieu Carré, Partrick J. Bartlein, Weipeng Zheng, Zhongshi Zhang, Qiong Zhang, Hu Yang, Evgeny M. Volodin, Robert A. Tomas, Cody Routson, W. Richard Peltier, Bette Otto-Bliesner, Polina A. Morozova, Nicholas P. McKay, Gerrit Lohmann, Allegra N. Legrande, Chuncheng Guo, Jian Cao, Esther Brady, James D. Annan, and Ayako Abe-Ouchi
Clim. Past, 16, 1847–1872, https://doi.org/10.5194/cp-16-1847-2020, https://doi.org/10.5194/cp-16-1847-2020, 2020
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This paper provides an initial exploration and comparison to climate reconstructions of the new climate model simulations of the mid-Holocene (6000 years ago). These use state-of-the-art models developed for CMIP6 and apply the same experimental set-up. The models capture several key aspects of the climate, but some persistent issues remain.
Charles J. R. Williams, Maria-Vittoria Guarino, Emilie Capron, Irene Malmierca-Vallet, Joy S. Singarayer, Louise C. Sime, Daniel J. Lunt, and Paul J. Valdes
Clim. Past, 16, 1429–1450, https://doi.org/10.5194/cp-16-1429-2020, https://doi.org/10.5194/cp-16-1429-2020, 2020
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Computer simulations of the geological past are an important tool to improve our understanding of climate change. We present results from two simulations using the latest version of the UK's climate model, the mid-Holocene (6000 years ago) and Last Interglacial (127 000 years ago). The simulations reproduce temperatures consistent with the pattern of incoming radiation. Model–data comparisons indicate that some regions (and some seasons) produce better matches to the data than others.
Alexandre Cauquoin, Martin Werner, and Gerrit Lohmann
Clim. Past, 15, 1913–1937, https://doi.org/10.5194/cp-15-1913-2019, https://doi.org/10.5194/cp-15-1913-2019, 2019
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We present here the first model results of a newly developed isotope-enhanced version of the Earth system model MPI-ESM. Our model setup has a finer spatial resolution compared to other isotope-enabled fully coupled models. We evaluate the model for preindustrial and mid-Holocene climate conditions. Our analyses show a good to very good agreement with various isotopic data. The spatial and temporal links between isotopes and climate variables under warm climatic conditions are also analyzed.
Anina Gilgen, Stiig Wilkenskjeld, Jed O. Kaplan, Thomas Kühn, and Ulrike Lohmann
Clim. Past, 15, 1885–1911, https://doi.org/10.5194/cp-15-1885-2019, https://doi.org/10.5194/cp-15-1885-2019, 2019
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Using the global aerosol–climate model ECHAM-HAM-SALSA, the effect of humans on European climate in the Roman Empire was quantified. Both land use and novel estimates of anthropogenic aerosol emissions were considered. We conducted simulations with fixed sea-surface temperatures to gain a first impression about the anthropogenic impact. While land use effects induced a regional warming for one of the reconstructions, aerosol emissions led to a cooling associated with aerosol–cloud interactions.
Pascale Braconnot, Dan Zhu, Olivier Marti, and Jérôme Servonnat
Clim. Past, 15, 997–1024, https://doi.org/10.5194/cp-15-997-2019, https://doi.org/10.5194/cp-15-997-2019, 2019
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This study discusses a simulation of the last 6000 years realized with a climate model in which the vegetation and carbon cycle are fully interactive. The long-term southward shift in Northern Hemisphere tree line and Afro-Asian monsoon rain are reproduced. The results show substantial change in tree composition with time over Eurasia and the role of trace gases in the recent past. They highlight the limitations due to model setup and multiple preindustrial vegetation states.
Mi Yan and Jian Liu
Clim. Past, 15, 265–277, https://doi.org/10.5194/cp-15-265-2019, https://doi.org/10.5194/cp-15-265-2019, 2019
Liang Ning, Jian Liu, Raymond S. Bradley, and Mi Yan
Clim. Past, 15, 41–52, https://doi.org/10.5194/cp-15-41-2019, https://doi.org/10.5194/cp-15-41-2019, 2019
Andrea Klus, Matthias Prange, Vidya Varma, Louis Bruno Tremblay, and Michael Schulz
Clim. Past, 14, 1165–1178, https://doi.org/10.5194/cp-14-1165-2018, https://doi.org/10.5194/cp-14-1165-2018, 2018
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Numerous proxy records from the northern North Atlantic suggest substantial climate variability including the occurrence of multi-decadal-to-centennial cold events during the Holocene. We analyzed two abrupt cold events in a Holocene simulation using a comprehensive climate model. It is shown that the events were ultimately triggered by prolonged phases of positive North Atlantic Oscillation causing changes in ocean circulation followed by severe cooling, freshening, and expansion of sea ice.
Duncan Ackerley, Jessica Reeves, Cameron Barr, Helen Bostock, Kathryn Fitzsimmons, Michael-Shawn Fletcher, Chris Gouramanis, Helen McGregor, Scott Mooney, Steven J. Phipps, John Tibby, and Jonathan Tyler
Clim. Past, 13, 1661–1684, https://doi.org/10.5194/cp-13-1661-2017, https://doi.org/10.5194/cp-13-1661-2017, 2017
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A selection of climate models have been used to simulate both pre-industrial (1750 CE) and mid-Holocene (6000 years ago) conditions. This study presents an assessment of the temperature, rainfall and flow over Australasia from those climate models. The model data are compared with available proxy data reconstructions (e.g. tree rings) for 6000 years ago to identify whether the models are reliable. Places where there is both agreement and conflict are highlighted and investigated further.
Anne Dallmeyer, Martin Claussen, Jian Ni, Xianyong Cao, Yongbo Wang, Nils Fischer, Madlene Pfeiffer, Liya Jin, Vyacheslav Khon, Sebastian Wagner, Kerstin Haberkorn, and Ulrike Herzschuh
Clim. Past, 13, 107–134, https://doi.org/10.5194/cp-13-107-2017, https://doi.org/10.5194/cp-13-107-2017, 2017
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The vegetation distribution in eastern Asia is supposed to be very sensitive to climate change. Since proxy records are scarce, hitherto a mechanistic understanding of the past spatio-temporal climate–vegetation relationship is lacking. To assess the Holocene vegetation change, we forced the diagnostic biome model BIOME4 with climate anomalies of different transient climate simulations.
Xinyu Wen, Zhengyu Liu, Zhongxiao Chen, Esther Brady, David Noone, Qingzhao Zhu, and Jian Guan
Clim. Past, 12, 2077–2085, https://doi.org/10.5194/cp-12-2077-2016, https://doi.org/10.5194/cp-12-2077-2016, 2016
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In this paper, we challenge the usefulness of temperature effect and amount effect, the basic assumptions in past climate reconstruction using a stable water isotope proxy, in East Asia on multiple timescales. By modeling several time slices in the past 22 000 years using an isotope-enabled general circulation model, we suggest great caution when interpreting δ18O records in this area as indicators of surface temperature and/or local monsoonal precipitation, especially on a millennial timescale.
Emmanuele Russo and Ulrich Cubasch
Clim. Past, 12, 1645–1662, https://doi.org/10.5194/cp-12-1645-2016, https://doi.org/10.5194/cp-12-1645-2016, 2016
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In this study we use a RCM for three different goals.
Proposing a model configuration suitable for paleoclimate studies; evaluating the added value of a regional climate model for paleoclimate studies; investigating temperature evolution of the European continent during mid-to-late Holocene.
Results suggest that the RCM seems to produce results in better agreement with reconstructions than its driving GCM. Simulated temperature evolution seems to be too sensitive to changes in insolation.
Yurui Zhang, Hans Renssen, and Heikki Seppä
Clim. Past, 12, 1119–1135, https://doi.org/10.5194/cp-12-1119-2016, https://doi.org/10.5194/cp-12-1119-2016, 2016
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We explore how forcings contributed to climate change during the early Holocene that marked the final transition to the warm and stable stage. Our results indicate that 1) temperature at the Holocene onset was lower than in the preindustrial over the northern extratropics with the exception in Alaska, and the magnitude of this cooling varies regionally as a response to varying climate forcings and diverse mechanisms, and 2) the rate of the early Holocene warming was also spatially heterogeneous.
M. Clare Smith, Joy S. Singarayer, Paul J. Valdes, Jed O. Kaplan, and Nicholas P. Branch
Clim. Past, 12, 923–941, https://doi.org/10.5194/cp-12-923-2016, https://doi.org/10.5194/cp-12-923-2016, 2016
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We used climate modelling to estimate the biogeophysical impacts of agriculture on the climate over the last 8000 years of the Holocene. Our results show statistically significant surface temperature changes (mainly cooling) from as early as 7000 BP in the JJA season and throughout the entire annual cycle by 2–3000 BP. The changes were greatest in the areas of land use change but were also seen in other areas. Precipitation was also affected, particularly in Europe, India, and the ITCZ region.
Sabine Egerer, Martin Claussen, Christian Reick, and Tanja Stanelle
Clim. Past, 12, 1009–1027, https://doi.org/10.5194/cp-12-1009-2016, https://doi.org/10.5194/cp-12-1009-2016, 2016
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We demonstrate for the first time the direct link between dust accumulation in marine sediment cores and Saharan land surface by simulating the mid-Holocene and pre-industrial dust cycle as a function of Saharan land surface cover and atmosphere-ocean conditions using the coupled atmosphere-aerosol model ECHAM6-HAM2.1. Mid-Holocene surface characteristics, including vegetation cover and lake surface area, are derived from proxy data and simulations.
S. C. Lewis and A. N. LeGrande
Clim. Past, 11, 1347–1360, https://doi.org/10.5194/cp-11-1347-2015, https://doi.org/10.5194/cp-11-1347-2015, 2015
P. J. Bartlein, M. E. Edwards, S. W. Hostetler, S. L. Shafer, P. M. Anderson, L. B. Brubaker, and A. V. Lozhkin
Clim. Past, 11, 1197–1222, https://doi.org/10.5194/cp-11-1197-2015, https://doi.org/10.5194/cp-11-1197-2015, 2015
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The ongoing warming of the Arctic is producing changes in vegetation and hydrology that, coupled with rising sea level, could mediate global changes. We explored this possibility using regional climate model simulations of a past interval of warming in Beringia and found that the regional-scale changes do strongly mediate the responses to global changes, amplifying them in some cases, damping them in others, and, overall, generating considerable spatial heterogeneity in climate change.
F. J. Davies, H. Renssen, M. Blaschek, and F. Muschitiello
Clim. Past, 11, 571–586, https://doi.org/10.5194/cp-11-571-2015, https://doi.org/10.5194/cp-11-571-2015, 2015
J. R. Alder and S. W. Hostetler
Clim. Past, 11, 449–471, https://doi.org/10.5194/cp-11-449-2015, https://doi.org/10.5194/cp-11-449-2015, 2015
G.-S. Chen, Z. Liu, and J. E. Kutzbach
Clim. Past, 10, 1269–1275, https://doi.org/10.5194/cp-10-1269-2014, https://doi.org/10.5194/cp-10-1269-2014, 2014
F. Klein, H. Goosse, A. Mairesse, and A. de Vernal
Clim. Past, 10, 1145–1163, https://doi.org/10.5194/cp-10-1145-2014, https://doi.org/10.5194/cp-10-1145-2014, 2014
A. Perez-Sanz, G. Li, P. González-Sampériz, and S. P. Harrison
Clim. Past, 10, 551–568, https://doi.org/10.5194/cp-10-551-2014, https://doi.org/10.5194/cp-10-551-2014, 2014
Z. Tian and D. Jiang
Clim. Past, 9, 2153–2171, https://doi.org/10.5194/cp-9-2153-2013, https://doi.org/10.5194/cp-9-2153-2013, 2013
J. J. Gómez-Navarro, J. P. Montávez, S. Wagner, and E. Zorita
Clim. Past, 9, 1667–1682, https://doi.org/10.5194/cp-9-1667-2013, https://doi.org/10.5194/cp-9-1667-2013, 2013
R. O'ishi and A. Abe-Ouchi
Clim. Past, 9, 1571–1587, https://doi.org/10.5194/cp-9-1571-2013, https://doi.org/10.5194/cp-9-1571-2013, 2013
R. Ohgaito, T. Sueyoshi, A. Abe-Ouchi, T. Hajima, S. Watanabe, H.-J. Kim, A. Yamamoto, and M. Kawamiya
Clim. Past, 9, 1519–1542, https://doi.org/10.5194/cp-9-1519-2013, https://doi.org/10.5194/cp-9-1519-2013, 2013
M. Eby, A. J. Weaver, K. Alexander, K. Zickfeld, A. Abe-Ouchi, A. A. Cimatoribus, E. Crespin, S. S. Drijfhout, N. R. Edwards, A. V. Eliseev, G. Feulner, T. Fichefet, C. E. Forest, H. Goosse, P. B. Holden, F. Joos, M. Kawamiya, D. Kicklighter, H. Kienert, K. Matsumoto, I. I. Mokhov, E. Monier, S. M. Olsen, J. O. P. Pedersen, M. Perrette, G. Philippon-Berthier, A. Ridgwell, A. Schlosser, T. Schneider von Deimling, G. Shaffer, R. S. Smith, R. Spahni, A. P. Sokolov, M. Steinacher, K. Tachiiri, K. Tokos, M. Yoshimori, N. Zeng, and F. Zhao
Clim. Past, 9, 1111–1140, https://doi.org/10.5194/cp-9-1111-2013, https://doi.org/10.5194/cp-9-1111-2013, 2013
Cited articles
Albani, S., Mahowald, N. M., Winckler, G., Anderson, R. F., Bradtmiller, L.
I., Delmonte, B., François, R., Goman, M., Heavens, N. G., Hesse, P. P.,
Hovan, S. A., Kang, S. G., Kohfeld, K. E., Lu, H., Maggi, V., Mason, J. A.,
Mayewski, P. A., McGee, D., Miao, X., Otto-Bliesner, B. L., Perry, A. T.,
Pourmand, A., Roberts, H. M., Rosenbloom, N., Stevens, T., and Sun, J.:
Twelve thousand years of dust: the Holocene global dust cycle constrained by
natural archives, Clim. Past, 11, 869–903,
https://doi.org/10.5194/cp-11-869-2015, 2015. a, b, c, d, e, f, g, h
Armitage, S. J., Bristow, C. S., and Drake, N. A.: West African monsoon
dynamics inferred from abrupt fluctuations of Lake Mega-Chad, P.
Natl. Acad. Sci., 112, 8543–8548, https://doi.org/10.1073/pnas.1417655112, 2015. a
Baker, R. A., Adams, C., Bell, G. T., Jickells, D. T., and Ganzeveld, L.:
Estimation of atmospheric nutrient inputs to the Atlantic Ocean from 50°N
to 50°S based on large scale field sampling: Iron and other dust associated
elements, Global Biogeochem. Cy., 27, 755–767,
https://doi.org/10.1002/gbc.20062,
2013. a
Bartlein, P.: Pollen-based continental climate reconstructions at 6 and 21 ka:
a global synthesis, Clim. Dynam., 37, 775–802,
https://doi.org/10.1007/s00382-010-0904-1, 2011. a, b, c, d
Ben-Ami, Y., Koren, I., Rudich, Y., Artaxo, P., Martin, S. T., and Andreae,
M. O.: Transport of North African dust from the Bodélé depression to the
Amazon Basin: a case study, Atmos. Chem. Phys., 10, 7533–7544,
https://doi.org/10.5194/acp-10-7533-2010, 2010. a, b
Berger, A.: Long-term variations of daily insolation and quaternary climatic
changes, J. Atmos. Sci., 35, 2362–2367, 1978. a
Bradtmiller, L. I., McGee, D., Awalt, M., Evers, J., Yerxa, H., Kinsley, C. W.,
and deMenocal, P. B.: Changes in biological productivity along the
northwest African margin over the past 20,000 years, Paleoceanography, 31,
185–202, https://doi.org/10.1002/2015PA002862,
2016. a
Brovkin, V., Claussen, M., Petoukhov, V., and Ganopolski, A.: On the stability
of the atmosphere-vegetation system in the Sahara/Sahel region, J.
Geophys. Res.-Atmos., 103, 31613–31624,
https://doi.org/10.1029/1998JD200006, 1998. a, b, c
Brovkin, V., Raddatz, T., Reick, C. H., Claussen, M., and Gayler, V.: Global
biogeophysical interactions between forest and climate, Geophys. Res.
Lett., 36, L07405, https://doi.org/10.1029/2009GL037543,
2009. a
Charney, J. G.: Dynamics of deserts and drought in the Sahel, Q.
J. Roy. Meteorol. Soc., 101, 193–202,
https://doi.org/10.1002/qj.49710142802,
1975. a
Claussen, B. S., Brovkin. V., and Kleinen. T.: Simulated
climate-vegetation interaction in semi-arid regions affected by plant
diversity, Nature Geosci., 6, 954–958, https://doi.org/10.1038/ngeo1962,
2013. a
Claussen, M., Kubatzki, C., Brovkin, V., Ganopolski, A., Hoelzmann, P., and
Pachur, H.-J.: Simulation of an abrupt change in Saharan vegetation in the
Mid-Holocene, Geophys. Res. Lett., 26, 2037–2040,
https://doi.org/10.1029/1999GL900494, 1999. a, b, c
Cockerton, H. E., Holmes, J. A., Street-Perrott, F. A., and Ficken, K. J.:
Holocene dust records from the West African Sahel and their implications for
changes in climate and land surface conditions, J. Geophys.
Res.-Atmos., 119, 8684–8694, https://doi.org/10.1002/2013JD021283, 2014. a, b, c, d
D'Agostino, R., Lionello, P., Adam, O., and Schneider, T.: Factors
controlling Hadley circulation changes from the Last Glacial Maximum to the
end of the 21st century, Geophys. Res. Lett., 44, 8585–8591,
https://doi.org/10.1002/2017GL074533,
2017. a
Dallmeyer, A., Claussen, M., and Brovkin, V.: Harmonizing plant functional
type distributions for evaluating Earth System Models, Clim. Past Discuss.,
https://doi.org/10.5194/cp-2018-41, in review, 2018. a
Egerer, S: Data for publication “Rapid increase in simulated North
Atlantic dust deposition due to fast change of northwest African landscape during the
Holocene”,
World Data Center for Climate (WDCC) at DKRZ,
available at: http://cera-www.dkrz.de/WDCC/ui/Compact.jsp?acronym=DKRZ_LTA_060_ds00002,
2018.
Egerer, S., Claussen, M., Reick, C., and Stanelle, T.: The link between
marine sediment records and changes in Holocene Saharan landscape: simulating
the dust cycle, Clim. Past, 12, 1009–1027,
https://doi.org/10.5194/cp-12-1009-2016, 2016. a, b, c
Eichhorn, A. and Bader, J.: Impact of tropical Atlantic sea-surface
temperature biases on the simulated atmospheric circulation and precipitation
over the Atlantic region: An ECHAM6 model study, Clim. Dynam., 49,
1–15, https://doi.org/10.1007/s00382-016-3415-x,
2016. a
Engelstaedter, S. and Washington, R.: Atmospheric controls on the annual cycle
of North African dust, J. Geophys. Res.-Atmos., 112,
https://doi.org/10.1029/2006JD007195,
2007. a, b, c
Engelstaedter, S., Tegen, I., and Washington, R.: North African dust emissions
and transport, Earth-Sci. Rev., 79, 73–100,
https://doi.org/10.1016/j.earscirev.2006.06.004,
2006. a, b
Fomba, K. W., Müller, K., van Pinxteren, D., Poulain, L., van Pinxteren,
M., and Herrmann, H.: Long-term chemical characterization of tropical and
marine aerosols at the Cape Verde Atmospheric Observatory (CVAO) from 2007 to
2011, Atmos. Chem. Phys., 14, 8883–8904,
https://doi.org/10.5194/acp-14-8883-2014, 2014. a
Gaetani, M., Messori, G., Zhang, Q., Flamant, C., and Pausata, F. S. R.:
Understanding the Mechanisms behind the Northward Extension of the West
African Monsoon during the Mid-Holocene, J. Climate, 30, 7621–7642,
https://doi.org/10.1175/JCLI-D-16-0299.1,
2017. a, b
Groner, V. P., Claussen, M., and Reick, C.: Palaeo plant diversity in
subtropical Africa – ecological assessment of a conceptual model of
climate-vegetation interaction, Clim. Past, 11, 1361–1374,
https://doi.org/10.5194/cp-11-1361-2015, 2015. a
Harrison, S. P., Kohfeld, K. E., Roelandt, C., and Claquin, T.: The role of
dust in climate changes today, at the last glacial maximum and in the
future, Earth-Sci. Rev., 54, 43–80,
https://doi.org/10.1016/S0012-8252(01)00041-1,
2001. a
Harrison, S. P., Bartlein, P., Izumi, K., Li, G., Annan, J., Hargreaves, J.,
Braconnot, P., and Kageyama, M.: Evaluation of CMIP5 palaeo-simulations to
improve climate projections, Nature Climate Change, 5, 735–743,
2015. a
Krinner, G., Lézine, A.-M., Braconnot, P., Sepulchre, P., Ramstein, G.,
Grenier, C., and Gouttevin, I.: A reassessment of lake and wetland feedbacks
on the North African Holocene climate, Geophys. Res. Lett., 39, L07701,
https://doi.org/10.1029/2012GL050992,
2012. a
Kröpelin, S., Verschuren, D., Lézine, A.-M., Eggermont, H., Cocquyt,
C., Francus, P., Cazet, J.-P., Fagot, M., Rumes, B., Russell, J. M., Darius,
F., Conley, D. J., Schuster, M., von Suchodoletz, H., and Engstrom, D. R.:
Climate-Driven Ecosystem Succession in the Sahara: The Past 6000 Years,
Science, 320, 765–768, https://doi.org/10.1126/science.1154913,
2008. a, b
Kutzbach, J. E. and Liu, Z.: Response of the African Monsoon to Orbital
Forcing and Ocean Feedbacks in the Middle Holocene, Science, 278, 440–443,
https://doi.org/10.1126/science.278.5337.440,
1997. a
Lézine, A.-M., Zheng, W., Braconnot, P., and Krinner, G.: Late Holocene
plant and climate evolution at Lake Yoa, northern Chad: pollen data and
climate simulations, Clim. Past, 7, 1351–1362,
https://doi.org/10.5194/cp-7-1351-2011, 2011. a, b
Liu, Z., Notaro, M., Kutzbach, J., and Liu, N.: Assessing Global
Vegetation Climate Feedbacks from Observations*, J. Climate, 19,
787–814, https://doi.org/10.1175/JCLI3658.1, 2006. a, b, c
Loveland, T., Reed, B., Brown, J., Ohlen, D., Zhu, Z., Yang, L., and Merchant,
J.: Development of a global land cover characteristics database and IGBP
DISCover from 1 km AVHRR data, Int. J. Remote Sens.,
21, 1303–1330, https://doi.org/10.1080/014311600210191,
2000. a
Mahowald, N., Albani, S., Kok, J. F., Engelstaeder, S., Scanza, R., Ward,
D. S., and Flanner, M. G.: The size distribution of desert dust aerosols and
its impact on the Earth system, Aeolian Research, 15, 53–71,
https://doi.org/10.1016/j.aeolia.2013.09.002,
2014. a, b
Marticorena, B. and Bergametti, G.: Modeling the atmospheric dust cycle: 1.
Design of a soil-derived dust emission scheme, J. Geophys.
Res.-Atmos., 100, 16415–16430, https://doi.org/10.1029/95JD00690,
1995. a
McGee, D., deMenocal, P., Winckler, G., Stuut, J., and Bradtmiller, L.: The
magnitude, timing and abruptness of changes in North African dust deposition
over the last 20,000yr, Earth Planet. Sci. Lett., 371–372,
163–176, https://doi.org/10.1016/j.epsl.2013.03.054,
2013. a, b, c, d, e, f, g, h, i, j, k
Merlis, T. M., Schneider, T., Bordoni, S., and Eisenman, I.: Hadley
Circulation Response to Orbital Precession. Part II: Subtropical Continent,
J. Climate, 26, 754–771, https://doi.org/10.1175/JCLI-D-12-00149.1,
2013. a
Middleton, N. J. and Goudie, A. S.: Saharan dust: sources and trajectories,
Transactions of the Institute of British Geographers, 26, 165–181,
https://doi.org/10.1111/1475-5661.00013,
2001. a
Patricola, C. M. and Cook, K. H.: Dynamics of the West African Monsoon
under Mid-Holocene Precessional Forcing: Regional Climate Model
Simulations, J. Climate, 20, 694–716, https://doi.org/10.1175/JCLI4013.1,
2007. a
Pausata, F. S. R., Messori, G., and Zhang, Q.: Impacts of dust reduction on
the northward expansion of the African monsoon during the Green Sahara
period, Earth Planet. Sc. Lett., 434, 298–307,
https://doi.org/10.1016/j.epsl.2015.11.049,
2016. a, b, c, d
Perez-Sanz, A., Li, G., González-Sampériz, P., and Harrison, S. P.:
Evaluation of modern and mid-Holocene seasonal precipitation of the
Mediterranean and northern Africa in the CMIP5 simulations, Clim. Past, 10,
551–568, https://doi.org/10.5194/cp-10-551-2014, 2014. a, b
Powell, C. F., Baker, A. R., Jickells, T. D., Bange, H. W., Chance, R. J., and
Yodle, C.: Estimation of the Atmospheric Flux of Nutrients and Trace Metals
to the Eastern Tropical North Atlantic Ocean, J. Atmos.
Sci., 72, 4029–4045, https://doi.org/10.1175/JAS-D-15-0011.1,
2015. a
Prospero, J. and Carlson, T.: Vertical and Areal Distribution of Saharan Dust
over the Western Equatorial North Atlantic Ocean, J. Geophys. Res., 77,
5255–5265, 1972. a
Prospero, J. M., Ginoux, P., Torres, O., Nicholson, S. E., and Gill, T. E.:
Environmental characterization of global sources of atmospheric soil dust
identified with the Nimbus 7 Total Ozone Mapping Spectrometer (TOMS)
absorbing aerosol product, Rev. Geophys., 40, 2-1–2-31,
https://doi.org/10.1029/2000RG000095,
2002. a, b, c, d
Ramankutty, N. and Foley, J. A.: Estimating historical changes in global land
cover: Croplands from 1700 to 1992, Global Biogeochem. Cy., 13,
997–1027, https://doi.org/10.1029/1999GB900046,
1999. a
Reick, C. H., Raddatz, T., Brovkin, V., and Gayler, V.: Representation of
natural and anthropogenic land cover change in MPI-ESM, J. Adv. Model. Earth Syst., 5, 459–482, https://doi.org/10.1002/jame.20022,
2013. a
Renssen, H., Brovkin, V., Fichefet, T., and Goosse, H.: Holocene climate
instability during the termination of the African Humid Period, Geophys.
Res. Lett., 30, 1184, https://doi.org/10.1029/2002GL016636,
2003. a
Romero, O., Jung-Hyun, K., and Barbara, D.: Submillennial-to-millennial
variability of diatom production off Mauritania, NW Africa, during the last
glacial cycle, Paleoceanography, 23, PA3218, https://doi.org/10.1029/2008PA001601,
2008. a
Schepanski, K., Tegen, I., and Macke, A.: Comparison of satellite based
observations of Saharan dust source areas, Remote Sens. Environ.,
123, 90–97, https://doi.org/10.1016/j.rse.2012.03.019,
2012. a, b
Shanahan, T. M., McKay, N. P., Hughen, K. A., Overpeck, J. T., Otto-Bliesner,
B., Heil, C. W., King, J., Scholz, C. A., and Peck, J.: The
time-transgressive termination of the African Humid Period, Nature Geosci.,
8, 140–144, https://doi.org/10.1038/ngeo2329,
2015. a
Stanelle, T., Bey, I., Raddatz, T., Reick, C., and Tegen, I.:
Anthropogenically induced changes in twentieth century mineral dust burden
and the associated impact on radiative forcing, J. Geophys.
Res.-Atmos., 119, 13526–13546, https://doi.org/10.1002/2014JD022062,
2014. a
Stevens, B., Giorgetta, M., Esch, M., Mauritsen, T., Crueger, T., Rast, S.,
Salzmann, M., Schmidt, H., Bader, J., Block, K., Brokopf, R., Fast, I.,
Kinne, S., Kornblueh, L., Lohmann, U., Pincus, R., Reichler, T., and
Roeckner, E.: Atmospheric component of the MPI-M Earth System Model:
ECHAM6, J. Adv. Model. Earth Systems, 5, 146–172,
https://doi.org/10.1002/jame.20015,
2013. a
Stier, P., Feichter, J., Kinne, S., Kloster, S., Vignati, E., Wilson, J.,
Ganzeveld, L., Tegen, I., Werner, M., Balkanski, Y., Schulz, M., Boucher, O.,
Minikin, A., and Petzold, A.: The aerosol-climate model ECHAM5-HAM, Atmos.
Chem. Phys., 5, 1125–1156, https://doi.org/10.5194/acp-5-1125-2005, 2005.
a, b
Sudarchikova, N., Mikolajewicz, U., Timmreck, C., O'Donnell, D., Schurgers,
G., Sein, D., and Zhang, K.: Modelling of mineral dust for interglacial and
glacial climate conditions with a focus on Antarctica, Clim. Past, 11,
765–779, https://doi.org/10.5194/cp-11-765-2015, 2015. a
Tegen, I., Harrison, S. P., Kohfeld, K., Prentice, I. C., Coe, M., and Heimann,
M.: Impact of vegetation and preferential source areas on global dust
aerosol: Results from a model study, J. Geophys. Res.-Atmos., 107, 14–27, https://doi.org/10.1029/2001JD000963,
2002. a, b, c
Vamborg, F. S. E., Brovkin, V., and Claussen, M.: The effect of a dynamic
background albedo scheme on Sahel/Sahara precipitation during the
mid-Holocene, Clim. Past, 7, 117–131, https://doi.org/10.5194/cp-7-117-2011,
2011. a
Washington, R., Bouet, C., Cautenet, G., Mackenzie, E., Ashpole, I.,
Engelstaedter, S., Lizcano, G., Henderson, G. M., Schepanski, K., and Tegen,
I.: Dust as a tipping element: The Bodélé Depression, Chad,
P. Natl. Acad. Sci., 106, 20564–20571,
https://doi.org/10.1073/pnas.0711850106,
2009. a, b
Williams, R. H., McGee, D., Kinsley, C. W., Ridley, D. A., Hu, S., Fedorov, A.,
Tal, I., Murray, R. W., and deMenocal, P. B.: Glacial to Holocene changes in
trans-Atlantic Saharan dust transport and dust-climate feedbacks, Sci.
Adv., 2, e1600445, https://doi.org/10.1126/sciadv.1600445,
2016. a, b, c, d, e, f, g, h, i, j
Zhao, Y., Braconnot, P., Marti, O., Harrison, S., Hewitt, C., Kitoh, A., Liu,
Z., Mikolajewicz, U., Otto-Bliesner, B., and Weber, S.: A multi-model
analysis of the role of the ocean on the African and Indian monsoon during
the mid-Holocene, Clim. Dynam., 25, 777–800,
https://doi.org/10.1007/s00382-005-0075-7,
2005. a
Zink, K.: Einfluss der Konvektionsparametrisierung auf die Dynamik der
Wechselwirkung Atmosphäre-Vegetation in Nordafrika, Master's thesis,
Universität Hamburg, 2014. a
Short summary
We find a rapid increase in simulated dust deposition between 6 and
4 ka BP that is fairly consistent with an abrupt change in dust deposition that was observed in marine sediment records at around 5 ka BP. This rapid change is caused by a rapid increase in simulated dust emissions in the western Sahara due to a fast decline in vegetation cover and a locally strong reduction of lake area. Our study identifies spatial and temporal heterogeneity in the transition of the North African landscape.
We find a rapid increase in simulated dust deposition between 6 and
4 ka BP that is fairly...
