Impact of solar forcing on the surface mass balance of northern ice sheets for glacial conditions
International audience The climate of the last glacial period has been punctuated by abrupt changes, termed the Dansgaard–Oeschger (DO) events, occurring every 1500–4500 yr. So far, the cause of these events, which involve changes in the thermohaline circulation, remains an open issue. It has been p...
Published in: | Earth and Planetary Science Letters |
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Main Authors: | , , , |
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Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2012
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Online Access: | https://hal.science/hal-02931514 https://doi.org/10.1016/j.epsl.2012.04.043 |
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ftunigrenoble:oai:HAL:hal-02931514v1 |
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Université Grenoble Alpes: HAL |
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language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Woillez, Marie-Noëlle Krinner, Gerhard Kageyama, Masa Delaygue, Gilles Impact of solar forcing on the surface mass balance of northern ice sheets for glacial conditions |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience The climate of the last glacial period has been punctuated by abrupt changes, termed the Dansgaard–Oeschger (DO) events, occurring every 1500–4500 yr. So far, the cause of these events, which involve changes in the thermohaline circulation, remains an open issue. It has been proposed that small changes in the freshwater flux in the North Atlantic, possibly coming from cyclic variations in solar activity, could act as a pacemaker and synchronize the events. Here we use the general circulation model IPSL_CM4 to investigate the impact of changes in the total solar irradiance (TSI) on the freshwater flux coming from ablation of the Northern hemisphere ice sheets. We test four different TSI values between 1360 and 1375 W/m2, and in this range establish a linear relationship between TSI and ablation rates over different sectors of the ice sheets. Our results show that a change in TSI smaller than 1%, that would be undetectable in paleo-records, can trigger changes in the freshwater flux in the North Atlantic at an amplitude similar to the one required to synchronize abrupt events in the climate model of intermediate complexity CLIMBER. Given the uncertainties on the past solar activity, we conclude that the hypothesis of a solar origin of the periodicity of D/O events cannot be ruled out and that the relationship between ice ablation and TSI variations is worth being further investigated. |
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) 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) Modélisation du climat (CLIM) 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)) |
format |
Article in Journal/Newspaper |
author |
Woillez, Marie-Noëlle Krinner, Gerhard Kageyama, Masa Delaygue, Gilles |
author_facet |
Woillez, Marie-Noëlle Krinner, Gerhard Kageyama, Masa Delaygue, Gilles |
author_sort |
Woillez, Marie-Noëlle |
title |
Impact of solar forcing on the surface mass balance of northern ice sheets for glacial conditions |
title_short |
Impact of solar forcing on the surface mass balance of northern ice sheets for glacial conditions |
title_full |
Impact of solar forcing on the surface mass balance of northern ice sheets for glacial conditions |
title_fullStr |
Impact of solar forcing on the surface mass balance of northern ice sheets for glacial conditions |
title_full_unstemmed |
Impact of solar forcing on the surface mass balance of northern ice sheets for glacial conditions |
title_sort |
impact of solar forcing on the surface mass balance of northern ice sheets for glacial conditions |
publisher |
HAL CCSD |
publishDate |
2012 |
url |
https://hal.science/hal-02931514 https://doi.org/10.1016/j.epsl.2012.04.043 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 0012-821X Earth and Planetary Science Letters https://hal.science/hal-02931514 Earth and Planetary Science Letters, 2012, 335-336, pp.18-24. ⟨10.1016/j.epsl.2012.04.043⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.epsl.2012.04.043 hal-02931514 https://hal.science/hal-02931514 doi:10.1016/j.epsl.2012.04.043 |
op_doi |
https://doi.org/10.1016/j.epsl.2012.04.043 |
container_title |
Earth and Planetary Science Letters |
container_volume |
335-336 |
container_start_page |
18 |
op_container_end_page |
24 |
_version_ |
1798850654812241920 |
spelling |
ftunigrenoble:oai:HAL:hal-02931514v1 2024-05-12T08:07:51+00:00 Impact of solar forcing on the surface mass balance of northern ice sheets for glacial conditions Woillez, Marie-Noëlle Krinner, Gerhard Kageyama, Masa Delaygue, Gilles 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) 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) Modélisation du climat (CLIM) 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)) 2012-06 https://hal.science/hal-02931514 https://doi.org/10.1016/j.epsl.2012.04.043 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.epsl.2012.04.043 hal-02931514 https://hal.science/hal-02931514 doi:10.1016/j.epsl.2012.04.043 ISSN: 0012-821X Earth and Planetary Science Letters https://hal.science/hal-02931514 Earth and Planetary Science Letters, 2012, 335-336, pp.18-24. ⟨10.1016/j.epsl.2012.04.043⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 2012 ftunigrenoble https://doi.org/10.1016/j.epsl.2012.04.043 2024-04-18T03:28:00Z International audience The climate of the last glacial period has been punctuated by abrupt changes, termed the Dansgaard–Oeschger (DO) events, occurring every 1500–4500 yr. So far, the cause of these events, which involve changes in the thermohaline circulation, remains an open issue. It has been proposed that small changes in the freshwater flux in the North Atlantic, possibly coming from cyclic variations in solar activity, could act as a pacemaker and synchronize the events. Here we use the general circulation model IPSL_CM4 to investigate the impact of changes in the total solar irradiance (TSI) on the freshwater flux coming from ablation of the Northern hemisphere ice sheets. We test four different TSI values between 1360 and 1375 W/m2, and in this range establish a linear relationship between TSI and ablation rates over different sectors of the ice sheets. Our results show that a change in TSI smaller than 1%, that would be undetectable in paleo-records, can trigger changes in the freshwater flux in the North Atlantic at an amplitude similar to the one required to synchronize abrupt events in the climate model of intermediate complexity CLIMBER. Given the uncertainties on the past solar activity, we conclude that the hypothesis of a solar origin of the periodicity of D/O events cannot be ruled out and that the relationship between ice ablation and TSI variations is worth being further investigated. Article in Journal/Newspaper North Atlantic Université Grenoble Alpes: HAL Earth and Planetary Science Letters 335-336 18 24 |