Impact of the Mertz Glacier Tongue calving on dense water formation and export
International audience Antarctic Bottom Water (AABW) is a critical component of the global climate system, occupying the abyssal layer of the World Ocean and driving the lower limb of the global meridional overturning circulation. Around East Antarctica, the dense shelf water (DSW) precursor to AABW...
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ftsorbonneuniv:oai:HAL:hal-00755141v1 2024-05-19T07:32:20+00:00 Impact of the Mertz Glacier Tongue calving on dense water formation and export Kusahara, Kazuya Hasumi, Hiroyasu Williams, Guy Darvall Atmosphere and Ocean Research Institute Kashiwa-shi (AORI) The University of Tokyo (UTokyo) 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) 2011-01 https://hal.science/hal-00755141 https://hal.science/hal-00755141/document https://hal.science/hal-00755141/file/ncomms1156.pdf https://doi.org/10.1038/NCOMMS1156 en eng HAL CCSD Nature Publishing Group info:eu-repo/semantics/altIdentifier/doi/10.1038/NCOMMS1156 hal-00755141 https://hal.science/hal-00755141 https://hal.science/hal-00755141/document https://hal.science/hal-00755141/file/ncomms1156.pdf BIBCODE: 2011NatCo.2E.159K doi:10.1038/NCOMMS1156 WOS: 000288225700009 info:eu-repo/semantics/OpenAccess ISSN: 2041-1723 EISSN: 2041-1723 Nature Communications https://hal.science/hal-00755141 Nature Communications, 2011, 2, pp.159. ⟨10.1038/NCOMMS1156⟩ [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] info:eu-repo/semantics/article Journal articles 2011 ftsorbonneuniv https://doi.org/10.1038/NCOMMS1156 2024-04-25T04:11:44Z International audience Antarctic Bottom Water (AABW) is a critical component of the global climate system, occupying the abyssal layer of the World Ocean and driving the lower limb of the global meridional overturning circulation. Around East Antarctica, the dense shelf water (DSW) precursor to AABW is predominantly formed by enhanced sea ice formation in coastal polynyas. The dominant source region of AABW supply to the Australian-Antarctic Basin is the Adélie and George V Land coast, in particular, polynyas formed in the western lee of the Mertz Glacier Tongue (MGT) and the grounded iceberg B9b over the Adélie and the Mertz Depressions, respectively. The calving of the MGT, which occurred on 12-13 February 2010, dramatically changed the environment for producing DSW. Here, we assess its impact using a state-of-the-art ice-ocean model. The model shows that oceanic circulation and sea ice production in the region changes immediately after the calving event, and that the DSW export is reduced by up to 23%. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica George V Land Iceberg* Mertz Glacier Sea ice HAL Sorbonne Université Nature Communications 2 1 |
institution |
Open Polar |
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HAL Sorbonne Université |
op_collection_id |
ftsorbonneuniv |
language |
English |
topic |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] |
spellingShingle |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] Kusahara, Kazuya Hasumi, Hiroyasu Williams, Guy Darvall Impact of the Mertz Glacier Tongue calving on dense water formation and export |
topic_facet |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] |
description |
International audience Antarctic Bottom Water (AABW) is a critical component of the global climate system, occupying the abyssal layer of the World Ocean and driving the lower limb of the global meridional overturning circulation. Around East Antarctica, the dense shelf water (DSW) precursor to AABW is predominantly formed by enhanced sea ice formation in coastal polynyas. The dominant source region of AABW supply to the Australian-Antarctic Basin is the Adélie and George V Land coast, in particular, polynyas formed in the western lee of the Mertz Glacier Tongue (MGT) and the grounded iceberg B9b over the Adélie and the Mertz Depressions, respectively. The calving of the MGT, which occurred on 12-13 February 2010, dramatically changed the environment for producing DSW. Here, we assess its impact using a state-of-the-art ice-ocean model. The model shows that oceanic circulation and sea ice production in the region changes immediately after the calving event, and that the DSW export is reduced by up to 23%. |
author2 |
Atmosphere and Ocean Research Institute Kashiwa-shi (AORI) The University of Tokyo (UTokyo) 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) |
format |
Article in Journal/Newspaper |
author |
Kusahara, Kazuya Hasumi, Hiroyasu Williams, Guy Darvall |
author_facet |
Kusahara, Kazuya Hasumi, Hiroyasu Williams, Guy Darvall |
author_sort |
Kusahara, Kazuya |
title |
Impact of the Mertz Glacier Tongue calving on dense water formation and export |
title_short |
Impact of the Mertz Glacier Tongue calving on dense water formation and export |
title_full |
Impact of the Mertz Glacier Tongue calving on dense water formation and export |
title_fullStr |
Impact of the Mertz Glacier Tongue calving on dense water formation and export |
title_full_unstemmed |
Impact of the Mertz Glacier Tongue calving on dense water formation and export |
title_sort |
impact of the mertz glacier tongue calving on dense water formation and export |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://hal.science/hal-00755141 https://hal.science/hal-00755141/document https://hal.science/hal-00755141/file/ncomms1156.pdf https://doi.org/10.1038/NCOMMS1156 |
genre |
Antarc* Antarctic Antarctica East Antarctica George V Land Iceberg* Mertz Glacier Sea ice |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica George V Land Iceberg* Mertz Glacier Sea ice |
op_source |
ISSN: 2041-1723 EISSN: 2041-1723 Nature Communications https://hal.science/hal-00755141 Nature Communications, 2011, 2, pp.159. ⟨10.1038/NCOMMS1156⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/NCOMMS1156 hal-00755141 https://hal.science/hal-00755141 https://hal.science/hal-00755141/document https://hal.science/hal-00755141/file/ncomms1156.pdf BIBCODE: 2011NatCo.2E.159K doi:10.1038/NCOMMS1156 WOS: 000288225700009 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1038/NCOMMS1156 |
container_title |
Nature Communications |
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2 |
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1 |
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1799470344540520448 |