Sahara and Sahel vulnerability to climate changes, lessons from Holocene hydrological data
International audience The examination of more than 1500 paleohydrological dated records collected between 10 and 28°N during the last 50 years have been used to improve our knowledge and understanding of the Sahara and Sahel vulnerability to the Atlantic monsoon changes in the long-term. We have an...
Published in: | Quaternary Science Reviews |
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Main Authors: | , , , , |
Other Authors: | , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2011
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Subjects: | |
Online Access: | https://insu.hal.science/insu-00647072 https://doi.org/10.1016/j.quascirev.2011.07.006 |
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ftuniversailles:oai:HAL:insu-00647072v1 |
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record_format |
openpolar |
institution |
Open Polar |
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Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ |
op_collection_id |
ftuniversailles |
language |
English |
topic |
Vulnerability Holocene humid period Atlantic monsoon Groundwaters Paleohydrology Sahara Sahel [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology |
spellingShingle |
Vulnerability Holocene humid period Atlantic monsoon Groundwaters Paleohydrology Sahara Sahel [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology Lézine, Anne-Marie Hély, Christelle Grenier, C. Braconnot, P. Krinner, G. Sahara and Sahel vulnerability to climate changes, lessons from Holocene hydrological data |
topic_facet |
Vulnerability Holocene humid period Atlantic monsoon Groundwaters Paleohydrology Sahara Sahel [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology |
description |
International audience The examination of more than 1500 paleohydrological dated records collected between 10 and 28°N during the last 50 years have been used to improve our knowledge and understanding of the Sahara and Sahel vulnerability to the Atlantic monsoon changes in the long-term. We have analyzed the distribution of water bodies (mainly lakes and wetlands) over time and space: the central Saharan massifs played a major role in favoring water supply to the lowlands throughout the whole African Humid Period. In addition, distinct East-West dynamics is recorded with humidity starting - and stopping - several millennia earlier to the east than to the west of the Sahara. A series of time lags are discussed: (1) between the maximum of deep (fresh water) lake formation during the early Holocene and the maximum of water body extensions during the mid-Holocene which highlight the primary role of aquifer water level in lake response to climate change (2) between the hydrological history of the Sahara and the Sahel and the forcings - mainly insolation changes - during the early and mid-Holocene which involves complex interactions between remnant ice sheet in the Northern Hemisphere, open water bodies in the Sahara and Sahel and the Atlantic monsoon system. |
author2 |
Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Glaces et Continents, Climats et Isotopes Stables (GLACCIOS) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE) Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Modélisation Hydrologique (HYDRO) Modelling the Earth Response to Multiple Anthropogenic Interactions and Dynamics (MERMAID) CLIPS Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Lézine, Anne-Marie Hély, Christelle Grenier, C. Braconnot, P. Krinner, G. |
author_facet |
Lézine, Anne-Marie Hély, Christelle Grenier, C. Braconnot, P. Krinner, G. |
author_sort |
Lézine, Anne-Marie |
title |
Sahara and Sahel vulnerability to climate changes, lessons from Holocene hydrological data |
title_short |
Sahara and Sahel vulnerability to climate changes, lessons from Holocene hydrological data |
title_full |
Sahara and Sahel vulnerability to climate changes, lessons from Holocene hydrological data |
title_fullStr |
Sahara and Sahel vulnerability to climate changes, lessons from Holocene hydrological data |
title_full_unstemmed |
Sahara and Sahel vulnerability to climate changes, lessons from Holocene hydrological data |
title_sort |
sahara and sahel vulnerability to climate changes, lessons from holocene hydrological data |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://insu.hal.science/insu-00647072 https://doi.org/10.1016/j.quascirev.2011.07.006 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
ISSN: 0277-3791 EISSN: 1873-457X Quaternary Science Reviews https://insu.hal.science/insu-00647072 Quaternary Science Reviews, 2011, 30 (21-22), pp.3001-3012. ⟨10.1016/j.quascirev.2011.07.006⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quascirev.2011.07.006 insu-00647072 https://insu.hal.science/insu-00647072 doi:10.1016/j.quascirev.2011.07.006 |
op_doi |
https://doi.org/10.1016/j.quascirev.2011.07.006 |
container_title |
Quaternary Science Reviews |
container_volume |
30 |
container_issue |
21-22 |
container_start_page |
3001 |
op_container_end_page |
3012 |
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1797584976242278400 |
spelling |
ftuniversailles:oai:HAL:insu-00647072v1 2024-04-28T08:25:00+00:00 Sahara and Sahel vulnerability to climate changes, lessons from Holocene hydrological data Lézine, Anne-Marie Hély, Christelle Grenier, C. Braconnot, P. Krinner, G. Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Glaces et Continents, Climats et Isotopes Stables (GLACCIOS) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE) Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Modélisation Hydrologique (HYDRO) Modelling the Earth Response to Multiple Anthropogenic Interactions and Dynamics (MERMAID) CLIPS Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) 2011-08-02 https://insu.hal.science/insu-00647072 https://doi.org/10.1016/j.quascirev.2011.07.006 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quascirev.2011.07.006 insu-00647072 https://insu.hal.science/insu-00647072 doi:10.1016/j.quascirev.2011.07.006 ISSN: 0277-3791 EISSN: 1873-457X Quaternary Science Reviews https://insu.hal.science/insu-00647072 Quaternary Science Reviews, 2011, 30 (21-22), pp.3001-3012. ⟨10.1016/j.quascirev.2011.07.006⟩ Vulnerability Holocene humid period Atlantic monsoon Groundwaters Paleohydrology Sahara Sahel [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology info:eu-repo/semantics/article Journal articles 2011 ftuniversailles https://doi.org/10.1016/j.quascirev.2011.07.006 2024-04-10T23:59:27Z International audience The examination of more than 1500 paleohydrological dated records collected between 10 and 28°N during the last 50 years have been used to improve our knowledge and understanding of the Sahara and Sahel vulnerability to the Atlantic monsoon changes in the long-term. We have analyzed the distribution of water bodies (mainly lakes and wetlands) over time and space: the central Saharan massifs played a major role in favoring water supply to the lowlands throughout the whole African Humid Period. In addition, distinct East-West dynamics is recorded with humidity starting - and stopping - several millennia earlier to the east than to the west of the Sahara. A series of time lags are discussed: (1) between the maximum of deep (fresh water) lake formation during the early Holocene and the maximum of water body extensions during the mid-Holocene which highlight the primary role of aquifer water level in lake response to climate change (2) between the hydrological history of the Sahara and the Sahel and the forcings - mainly insolation changes - during the early and mid-Holocene which involves complex interactions between remnant ice sheet in the Northern Hemisphere, open water bodies in the Sahara and Sahel and the Atlantic monsoon system. Article in Journal/Newspaper Ice Sheet Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ Quaternary Science Reviews 30 21-22 3001 3012 |