Mechanisms of interannual- to decadal-scale winter Labrador Sea ice variability
International audience The variability of the winter sea ice cover of the Labrador Sea region and its links to atmospheric and oceanic forcing are investigated using observational data, a coupled ocean-sea ice model and a fully-coupled model simulation drawn from the CMIP5 archive. A consistent seri...
Published in: | Climate Dynamics |
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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.sorbonne-universite.fr/hal-01668778 https://hal.sorbonne-universite.fr/hal-01668778/document https://hal.sorbonne-universite.fr/hal-01668778/file/close_2017_interannual_to_decadal_sans%20marque.pdf https://doi.org/10.1007/s00382-017-4024-z |
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Open Polar |
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Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
Sea ice Labrador Sea Ice–ocean–atmosphere interaction [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
spellingShingle |
Sea ice Labrador Sea Ice–ocean–atmosphere interaction [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology Close, Sally Herbaut, Christophe Houssais, Marie-Noëlle Blaizot, Anne-Cécile Mechanisms of interannual- to decadal-scale winter Labrador Sea ice variability |
topic_facet |
Sea ice Labrador Sea Ice–ocean–atmosphere interaction [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
description |
International audience The variability of the winter sea ice cover of the Labrador Sea region and its links to atmospheric and oceanic forcing are investigated using observational data, a coupled ocean-sea ice model and a fully-coupled model simulation drawn from the CMIP5 archive. A consistent series of mechanisms associated with high sea ice cover are found amongst the various data sets. The highest values of sea ice area occur when the northern Labrador Sea is ice covered. This region is found to be primarily thermodynamically forced, contrasting with the dominance of mechanical forcing along the eastern coast of Baffin Island and Labrador, and the growth of sea ice is associated with anomalously fresh local ocean surface conditions. Positive fresh water anomalies are found to propagate to the region from a source area off the southeast Greenland coast with a 1 month transit time. These anomalies are associated with sea ice melt, driven by the enhanced offshore transport of sea ice in the source region, and its subsequent westward transport in the Irminger Current system. By combining sea ice transport through the Denmark Strait in the preceding autumn with the Greenland Blocking Index and the Atlantic Multidecadal Oscillation Index, strong correlation with the Labrador Sea ice area of the following winter is obtained. This relationship represents a dependence on the availability of sea ice to be melted The research leading to these results has received funding from the European Union 7th Framework Programme (FP7 2007-2013) under grant agreement 308299, NACLIM Project. in the source region, the necessary atmospheric forcing to transport this offshore, and a further multidecadal-scale link with the large-scale sea surface temperature conditions. |
author2 |
Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-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)-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)-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) Variabilité de l'Océan et de la Glace de mer (VOG) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) 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)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-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)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) 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)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) CMIP European Project: 308299,EC:FP7:ENV,FP7-ENV-2012-two-stage,NACLIM(2012) |
format |
Article in Journal/Newspaper |
author |
Close, Sally Herbaut, Christophe Houssais, Marie-Noëlle Blaizot, Anne-Cécile |
author_facet |
Close, Sally Herbaut, Christophe Houssais, Marie-Noëlle Blaizot, Anne-Cécile |
author_sort |
Close, Sally |
title |
Mechanisms of interannual- to decadal-scale winter Labrador Sea ice variability |
title_short |
Mechanisms of interannual- to decadal-scale winter Labrador Sea ice variability |
title_full |
Mechanisms of interannual- to decadal-scale winter Labrador Sea ice variability |
title_fullStr |
Mechanisms of interannual- to decadal-scale winter Labrador Sea ice variability |
title_full_unstemmed |
Mechanisms of interannual- to decadal-scale winter Labrador Sea ice variability |
title_sort |
mechanisms of interannual- to decadal-scale winter labrador sea ice variability |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://hal.sorbonne-universite.fr/hal-01668778 https://hal.sorbonne-universite.fr/hal-01668778/document https://hal.sorbonne-universite.fr/hal-01668778/file/close_2017_interannual_to_decadal_sans%20marque.pdf https://doi.org/10.1007/s00382-017-4024-z |
genre |
Arctic Baffin Island Baffin Denmark Strait Greenland Labrador Sea Sea ice |
genre_facet |
Arctic Baffin Island Baffin Denmark Strait Greenland Labrador Sea Sea ice |
op_source |
ISSN: 0930-7575 EISSN: 1432-0894 Climate Dynamics https://hal.sorbonne-universite.fr/hal-01668778 Climate Dynamics, 2018, 51 (7–8), pp.2485-2508. ⟨10.1007/s00382-017-4024-z⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00382-017-4024-z info:eu-repo/grantAgreement/EC/FP7/308299/EU/North Atlantic Climate: Predictability of the climate in the North Atlantic/European sector related to North Atlantic/Arctic sea surface temperature and sea ice variability and change/NACLIM hal-01668778 https://hal.sorbonne-universite.fr/hal-01668778 https://hal.sorbonne-universite.fr/hal-01668778/document https://hal.sorbonne-universite.fr/hal-01668778/file/close_2017_interannual_to_decadal_sans%20marque.pdf BIBCODE: 2018ClDy.51.2485C doi:10.1007/s00382-017-4024-z WOS: 000444947600005 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1007/s00382-017-4024-z |
container_title |
Climate Dynamics |
container_volume |
51 |
container_issue |
7-8 |
container_start_page |
2485 |
op_container_end_page |
2508 |
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1797575321614024704 |
spelling |
ftinsu:oai:HAL:hal-01668778v1 2024-04-28T08:05:00+00:00 Mechanisms of interannual- to decadal-scale winter Labrador Sea ice variability Close, Sally Herbaut, Christophe Houssais, Marie-Noëlle Blaizot, Anne-Cécile Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-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)-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)-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) Variabilité de l'Océan et de la Glace de mer (VOG) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) 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)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-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)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) 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)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) CMIP European Project: 308299,EC:FP7:ENV,FP7-ENV-2012-two-stage,NACLIM(2012) 2018-10 https://hal.sorbonne-universite.fr/hal-01668778 https://hal.sorbonne-universite.fr/hal-01668778/document https://hal.sorbonne-universite.fr/hal-01668778/file/close_2017_interannual_to_decadal_sans%20marque.pdf https://doi.org/10.1007/s00382-017-4024-z en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s00382-017-4024-z info:eu-repo/grantAgreement/EC/FP7/308299/EU/North Atlantic Climate: Predictability of the climate in the North Atlantic/European sector related to North Atlantic/Arctic sea surface temperature and sea ice variability and change/NACLIM hal-01668778 https://hal.sorbonne-universite.fr/hal-01668778 https://hal.sorbonne-universite.fr/hal-01668778/document https://hal.sorbonne-universite.fr/hal-01668778/file/close_2017_interannual_to_decadal_sans%20marque.pdf BIBCODE: 2018ClDy.51.2485C doi:10.1007/s00382-017-4024-z WOS: 000444947600005 info:eu-repo/semantics/OpenAccess ISSN: 0930-7575 EISSN: 1432-0894 Climate Dynamics https://hal.sorbonne-universite.fr/hal-01668778 Climate Dynamics, 2018, 51 (7–8), pp.2485-2508. ⟨10.1007/s00382-017-4024-z⟩ Sea ice Labrador Sea Ice–ocean–atmosphere interaction [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology info:eu-repo/semantics/article Journal articles 2018 ftinsu https://doi.org/10.1007/s00382-017-4024-z 2024-04-05T00:47:10Z International audience The variability of the winter sea ice cover of the Labrador Sea region and its links to atmospheric and oceanic forcing are investigated using observational data, a coupled ocean-sea ice model and a fully-coupled model simulation drawn from the CMIP5 archive. A consistent series of mechanisms associated with high sea ice cover are found amongst the various data sets. The highest values of sea ice area occur when the northern Labrador Sea is ice covered. This region is found to be primarily thermodynamically forced, contrasting with the dominance of mechanical forcing along the eastern coast of Baffin Island and Labrador, and the growth of sea ice is associated with anomalously fresh local ocean surface conditions. Positive fresh water anomalies are found to propagate to the region from a source area off the southeast Greenland coast with a 1 month transit time. These anomalies are associated with sea ice melt, driven by the enhanced offshore transport of sea ice in the source region, and its subsequent westward transport in the Irminger Current system. By combining sea ice transport through the Denmark Strait in the preceding autumn with the Greenland Blocking Index and the Atlantic Multidecadal Oscillation Index, strong correlation with the Labrador Sea ice area of the following winter is obtained. This relationship represents a dependence on the availability of sea ice to be melted The research leading to these results has received funding from the European Union 7th Framework Programme (FP7 2007-2013) under grant agreement 308299, NACLIM Project. in the source region, the necessary atmospheric forcing to transport this offshore, and a further multidecadal-scale link with the large-scale sea surface temperature conditions. Article in Journal/Newspaper Arctic Baffin Island Baffin Denmark Strait Greenland Labrador Sea Sea ice Institut national des sciences de l'Univers: HAL-INSU Climate Dynamics 51 7-8 2485 2508 |