Ice core evidence for decoupling between midlatitude atmospheric water cycle and Greenland temperature during the last deglaciation
International audience The last deglaciation represents the most recent example of natural global warming associated with large-scale climate changes. In addition to the long-term global temperature increase, the last deglaciation onset is punctuated by a sequence of abrupt changes in the Northern H...
Published in: | Climate of the Past |
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Main Authors: | , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2018
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Subjects: | |
Online Access: | https://hal.science/hal-02358183 https://hal.science/hal-02358183/document https://hal.science/hal-02358183/file/landais_CP_2018.pdf https://doi.org/10.5194/cp-14-1405-2018 |
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Université de Nantes: HAL-UNIV-NANTES |
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English |
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[SDE]Environmental Sciences [SDU]Sciences of the Universe [physics] [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDE]Environmental Sciences [SDU]Sciences of the Universe [physics] [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Landais, Amaelle Capron, Emilie Masson-Delmotte, Valérie Toucanne, Samuel, Rhodes, Rachael, Popp, Trevor Vinther, Bo Minster, Bénédicte Prié, Frédéric Ice core evidence for decoupling between midlatitude atmospheric water cycle and Greenland temperature during the last deglaciation |
topic_facet |
[SDE]Environmental Sciences [SDU]Sciences of the Universe [physics] [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience The last deglaciation represents the most recent example of natural global warming associated with large-scale climate changes. In addition to the long-term global temperature increase, the last deglaciation onset is punctuated by a sequence of abrupt changes in the Northern Hemisphere. Such interplay between orbital-and millennial-scale variability is widely documented in paleoclimatic records but the underlying mechanisms are not fully understood. Limitations arise from the difficulty in constraining the sequence of events between external forcing, high-and low-latitude climate, and environmental changes. Greenland ice cores provide sub-decadal-scale records across the last deglaciation and contain fingerprints of climate variations occurring in different regions of the Northern Hemisphere. Here, we combine new ice d-excess and 17 O-excess records, tracing changes in the midlatitudes, with ice δ 18 O records of polar climate. Within Heinrich Stadial 1, we demonstrate a decoupling between climatic conditions in Greenland and those of the lower latitudes. While Greenland temperature remains mostly stable from 17.5 to 14.7 ka, significant change in the midlatitudes of the northern Atlantic takes place at ∼ 16.2 ka, associated with warmer and wetter conditions of Greenland moisture sources. We show that this climate modification is coincident with abrupt changes in atmospheric CO 2 and CH 4 concentrations recorded in an Antarctic ice core. Our coherent ice core chronological framework and comparison with other paleoclimate records suggests a mechanism involving two-step freshwater fluxes in the North Atlantic associated with a southward shift of the Intertropical Convergence Zone. |
author2 |
Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) Glaces et Continents, Climats et Isotopes Stables (GLACCIOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) British Antarctic Survey (BAS) Natural Environment Research Council (NERC) Laboratoire Environnements Sédimentaires (LES) Géosciences Marines (GM) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) College of Earth, Ocean and Atmospheric Sciences Corvallis (CEOAS) Oregon State University (OSU) Centre for Ice and Climate Copenhagen Niels Bohr Institute Copenhagen (NBI) Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH)-Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH) Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Landais, Amaelle Capron, Emilie Masson-Delmotte, Valérie Toucanne, Samuel, Rhodes, Rachael, Popp, Trevor Vinther, Bo Minster, Bénédicte Prié, Frédéric |
author_facet |
Landais, Amaelle Capron, Emilie Masson-Delmotte, Valérie Toucanne, Samuel, Rhodes, Rachael, Popp, Trevor Vinther, Bo Minster, Bénédicte Prié, Frédéric |
author_sort |
Landais, Amaelle |
title |
Ice core evidence for decoupling between midlatitude atmospheric water cycle and Greenland temperature during the last deglaciation |
title_short |
Ice core evidence for decoupling between midlatitude atmospheric water cycle and Greenland temperature during the last deglaciation |
title_full |
Ice core evidence for decoupling between midlatitude atmospheric water cycle and Greenland temperature during the last deglaciation |
title_fullStr |
Ice core evidence for decoupling between midlatitude atmospheric water cycle and Greenland temperature during the last deglaciation |
title_full_unstemmed |
Ice core evidence for decoupling between midlatitude atmospheric water cycle and Greenland temperature during the last deglaciation |
title_sort |
ice core evidence for decoupling between midlatitude atmospheric water cycle and greenland temperature during the last deglaciation |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://hal.science/hal-02358183 https://hal.science/hal-02358183/document https://hal.science/hal-02358183/file/landais_CP_2018.pdf https://doi.org/10.5194/cp-14-1405-2018 |
geographic |
Antarctic Greenland |
geographic_facet |
Antarctic Greenland |
genre |
Antarc* Antarctic Greenland Greenland ice cores ice core North Atlantic |
genre_facet |
Antarc* Antarctic Greenland Greenland ice cores ice core North Atlantic |
op_source |
ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.science/hal-02358183 Climate of the Past, 2018, 14 (10), pp.1405 - 1415. ⟨10.5194/cp-14-1405-2018⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-14-1405-2018 hal-02358183 https://hal.science/hal-02358183 https://hal.science/hal-02358183/document https://hal.science/hal-02358183/file/landais_CP_2018.pdf doi:10.5194/cp-14-1405-2018 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/cp-14-1405-2018 |
container_title |
Climate of the Past |
container_volume |
14 |
container_issue |
10 |
container_start_page |
1405 |
op_container_end_page |
1415 |
_version_ |
1766245499907604480 |
spelling |
ftunivnantes:oai:HAL:hal-02358183v1 2023-05-15T13:46:53+02:00 Ice core evidence for decoupling between midlatitude atmospheric water cycle and Greenland temperature during the last deglaciation Landais, Amaelle Capron, Emilie Masson-Delmotte, Valérie Toucanne, Samuel, Rhodes, Rachael, Popp, Trevor Vinther, Bo Minster, Bénédicte Prié, Frédéric Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) Glaces et Continents, Climats et Isotopes Stables (GLACCIOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) British Antarctic Survey (BAS) Natural Environment Research Council (NERC) Laboratoire Environnements Sédimentaires (LES) Géosciences Marines (GM) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) College of Earth, Ocean and Atmospheric Sciences Corvallis (CEOAS) Oregon State University (OSU) Centre for Ice and Climate Copenhagen Niels Bohr Institute Copenhagen (NBI) Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH)-Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH) Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) 2018 https://hal.science/hal-02358183 https://hal.science/hal-02358183/document https://hal.science/hal-02358183/file/landais_CP_2018.pdf https://doi.org/10.5194/cp-14-1405-2018 en eng HAL CCSD European Geosciences Union (EGU) info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-14-1405-2018 hal-02358183 https://hal.science/hal-02358183 https://hal.science/hal-02358183/document https://hal.science/hal-02358183/file/landais_CP_2018.pdf doi:10.5194/cp-14-1405-2018 info:eu-repo/semantics/OpenAccess ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.science/hal-02358183 Climate of the Past, 2018, 14 (10), pp.1405 - 1415. ⟨10.5194/cp-14-1405-2018⟩ [SDE]Environmental Sciences [SDU]Sciences of the Universe [physics] [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2018 ftunivnantes https://doi.org/10.5194/cp-14-1405-2018 2023-02-08T07:19:07Z International audience The last deglaciation represents the most recent example of natural global warming associated with large-scale climate changes. In addition to the long-term global temperature increase, the last deglaciation onset is punctuated by a sequence of abrupt changes in the Northern Hemisphere. Such interplay between orbital-and millennial-scale variability is widely documented in paleoclimatic records but the underlying mechanisms are not fully understood. Limitations arise from the difficulty in constraining the sequence of events between external forcing, high-and low-latitude climate, and environmental changes. Greenland ice cores provide sub-decadal-scale records across the last deglaciation and contain fingerprints of climate variations occurring in different regions of the Northern Hemisphere. Here, we combine new ice d-excess and 17 O-excess records, tracing changes in the midlatitudes, with ice δ 18 O records of polar climate. Within Heinrich Stadial 1, we demonstrate a decoupling between climatic conditions in Greenland and those of the lower latitudes. While Greenland temperature remains mostly stable from 17.5 to 14.7 ka, significant change in the midlatitudes of the northern Atlantic takes place at ∼ 16.2 ka, associated with warmer and wetter conditions of Greenland moisture sources. We show that this climate modification is coincident with abrupt changes in atmospheric CO 2 and CH 4 concentrations recorded in an Antarctic ice core. Our coherent ice core chronological framework and comparison with other paleoclimate records suggests a mechanism involving two-step freshwater fluxes in the North Atlantic associated with a southward shift of the Intertropical Convergence Zone. Article in Journal/Newspaper Antarc* Antarctic Greenland Greenland ice cores ice core North Atlantic Université de Nantes: HAL-UNIV-NANTES Antarctic Greenland Climate of the Past 14 10 1405 1415 |