Regional dependence in the timing of onset of rapid decline in Arctic sea ice concentration
International audience Arctic sea ice concentration from satellite passive microwave measurements is analyzed to assess the form and timing of the onset of decline of recent ice loss, and the regional dependence of the response. The timing of the onset is estimated using an objective method, and sug...
Published in: | Journal of Geophysical Research: Oceans |
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Main Authors: | , , |
Other Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2015
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Online Access: | https://hal.sorbonne-universite.fr/hal-01252097 https://hal.sorbonne-universite.fr/hal-01252097/document https://hal.sorbonne-universite.fr/hal-01252097/file/Close_2015_Regional_dependence.pdf https://doi.org/10.1002/2015JC011187 |
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ftceafr:oai:HAL:hal-01252097v1 |
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openpolar |
institution |
Open Polar |
collection |
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |
op_collection_id |
ftceafr |
language |
English |
topic |
[SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
[SDE.MCG]Environmental Sciences/Global Changes Close, Sally Houssais, Marie-Noëlle Herbaut, Christophe Regional dependence in the timing of onset of rapid decline in Arctic sea ice concentration |
topic_facet |
[SDE.MCG]Environmental Sciences/Global Changes |
description |
International audience Arctic sea ice concentration from satellite passive microwave measurements is analyzed to assess the form and timing of the onset of decline of recent ice loss, and the regional dependence of the response. The timing of the onset is estimated using an objective method, and suggests differences of up to 20 years between the various subregions. A clear distinction can be drawn between the recent onset times of the Atlantic sector (beginning in 2003) and the much earlier onset times associated with the Pacific sector, where the earliest transition to rapid loss is found in 1992. Rates of decline prior to and following the transition points are calculated, and suggest that the postonset rate of loss is greatest in the Barents Sea, and weakest in the Pacific sector. Covariability between the seasons is noted in the SIC response, both at interannual and longer time scales. For two case regions, potential mechanisms for the onset time transitions are briefly analyzed. In the Barents Sea, the onset time coincides with a redistribution of the pathways of ice circulation in the region, while along the Alaskan coast, the propagation of the regional signal can be traced in the age of the sea ice. The results presented here indicate a series of spatially self-consistent regional responses, and may be useful in understanding the primary drivers of recent sea ice loss. |
author2 |
Variabilité de l'Océan et de la Glace de mer (VOG) 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)-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)) 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) |
format |
Article in Journal/Newspaper |
author |
Close, Sally Houssais, Marie-Noëlle Herbaut, Christophe |
author_facet |
Close, Sally Houssais, Marie-Noëlle Herbaut, Christophe |
author_sort |
Close, Sally |
title |
Regional dependence in the timing of onset of rapid decline in Arctic sea ice concentration |
title_short |
Regional dependence in the timing of onset of rapid decline in Arctic sea ice concentration |
title_full |
Regional dependence in the timing of onset of rapid decline in Arctic sea ice concentration |
title_fullStr |
Regional dependence in the timing of onset of rapid decline in Arctic sea ice concentration |
title_full_unstemmed |
Regional dependence in the timing of onset of rapid decline in Arctic sea ice concentration |
title_sort |
regional dependence in the timing of onset of rapid decline in arctic sea ice concentration |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://hal.sorbonne-universite.fr/hal-01252097 https://hal.sorbonne-universite.fr/hal-01252097/document https://hal.sorbonne-universite.fr/hal-01252097/file/Close_2015_Regional_dependence.pdf https://doi.org/10.1002/2015JC011187 |
genre |
Barents Sea Sea ice |
genre_facet |
Barents Sea Sea ice |
op_source |
ISSN: 2169-9275 EISSN: 2169-9291 Journal of Geophysical Research. Oceans https://hal.sorbonne-universite.fr/hal-01252097 Journal of Geophysical Research. Oceans, 2015, 120 (12), pp.8077-8098. ⟨10.1002/2015JC011187⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/2015JC011187 hal-01252097 https://hal.sorbonne-universite.fr/hal-01252097 https://hal.sorbonne-universite.fr/hal-01252097/document https://hal.sorbonne-universite.fr/hal-01252097/file/Close_2015_Regional_dependence.pdf doi:10.1002/2015JC011187 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1002/2015JC011187 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
120 |
container_issue |
12 |
container_start_page |
8077 |
op_container_end_page |
8098 |
_version_ |
1810434074207059968 |
spelling |
ftceafr:oai:HAL:hal-01252097v1 2024-09-15T17:57:52+00:00 Regional dependence in the timing of onset of rapid decline in Arctic sea ice concentration Close, Sally Houssais, Marie-Noëlle Herbaut, Christophe Variabilité de l'Océan et de la Glace de mer (VOG) 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)-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)) 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) 2015-12 https://hal.sorbonne-universite.fr/hal-01252097 https://hal.sorbonne-universite.fr/hal-01252097/document https://hal.sorbonne-universite.fr/hal-01252097/file/Close_2015_Regional_dependence.pdf https://doi.org/10.1002/2015JC011187 en eng HAL CCSD Wiley-Blackwell info:eu-repo/semantics/altIdentifier/doi/10.1002/2015JC011187 hal-01252097 https://hal.sorbonne-universite.fr/hal-01252097 https://hal.sorbonne-universite.fr/hal-01252097/document https://hal.sorbonne-universite.fr/hal-01252097/file/Close_2015_Regional_dependence.pdf doi:10.1002/2015JC011187 info:eu-repo/semantics/OpenAccess ISSN: 2169-9275 EISSN: 2169-9291 Journal of Geophysical Research. Oceans https://hal.sorbonne-universite.fr/hal-01252097 Journal of Geophysical Research. Oceans, 2015, 120 (12), pp.8077-8098. ⟨10.1002/2015JC011187⟩ [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/article Journal articles 2015 ftceafr https://doi.org/10.1002/2015JC011187 2024-07-22T13:30:48Z International audience Arctic sea ice concentration from satellite passive microwave measurements is analyzed to assess the form and timing of the onset of decline of recent ice loss, and the regional dependence of the response. The timing of the onset is estimated using an objective method, and suggests differences of up to 20 years between the various subregions. A clear distinction can be drawn between the recent onset times of the Atlantic sector (beginning in 2003) and the much earlier onset times associated with the Pacific sector, where the earliest transition to rapid loss is found in 1992. Rates of decline prior to and following the transition points are calculated, and suggest that the postonset rate of loss is greatest in the Barents Sea, and weakest in the Pacific sector. Covariability between the seasons is noted in the SIC response, both at interannual and longer time scales. For two case regions, potential mechanisms for the onset time transitions are briefly analyzed. In the Barents Sea, the onset time coincides with a redistribution of the pathways of ice circulation in the region, while along the Alaskan coast, the propagation of the regional signal can be traced in the age of the sea ice. The results presented here indicate a series of spatially self-consistent regional responses, and may be useful in understanding the primary drivers of recent sea ice loss. Article in Journal/Newspaper Barents Sea Sea ice HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) Journal of Geophysical Research: Oceans 120 12 8077 8098 |