Transient climate response to Arctic sea-ice loss with two ice-constraining methods
International audience The impact of Arctic sea ice loss on the ocean and atmosphere is investigated focusing on a gradual reduction of Arctic sea ice by 20% of the annual mean, occurring within 30 years, starting from present-day conditions. Two ice-constraining methods are explored to melt Arctic...
Published in: | Journal of Climate |
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Main Authors: | , , , , |
Other Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2021
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Online Access: | https://hal.archives-ouvertes.fr/hal-02947883 https://hal.archives-ouvertes.fr/hal-02947883v2/document https://hal.archives-ouvertes.fr/hal-02947883v2/file/Simon_et_al_JCLI_2021.pdf https://doi.org/10.1175/jcli-d-20-0288.1 |
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English |
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[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
spellingShingle |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] Simon, Amélie Gastineau, Guillaume Frankignoul, Claude Rousset, Clément Codron, Francis Transient climate response to Arctic sea-ice loss with two ice-constraining methods |
topic_facet |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
description |
International audience The impact of Arctic sea ice loss on the ocean and atmosphere is investigated focusing on a gradual reduction of Arctic sea ice by 20% of the annual mean, occurring within 30 years, starting from present-day conditions. Two ice-constraining methods are explored to melt Arctic sea ice in a coupled climate model, while keeping present-day conditions for external forcing. The first method uses a reduction of sea ice albedo, which modifies the incoming surface shortwave radiation. The second method uses a reduction of thermal conductivity, which changes the heat conduction flux inside ice. Reduced thermal conductivity inhibits oceanic cooling in winter and sea ice basal growth, reducing the seasonality of sea ice thickness. For similar Arctic sea ice area loss, decreasing the albedo induces larger Arctic warming than reducing the conductivity, especially in spring. Both ice-constraining methods produce similar climate impacts, but with smaller anomalies when reducing the conductivity. In the Arctic, the sea ice loss leads to an increase of the North Atlantic water inflow in the Barents Sea and eastern Arctic, while the salinity decreases and the gyre intensifies in the Beaufort Sea. In the North Atlantic, the subtropical gyre shifts southward and the Atlantic meridional overturning circulation weakens. A dipole of sea level pressure anomalies sets up in winter over northern Siberia and the North Atlantic, which resembles the negative phase of the North Atlantic Oscillation. In the tropics, the Atlantic intertropical convergence zone shifts southward as the South Atlantic Ocean warms. In addition, Walker circulation reorganizes and the southeastern Pacific Ocean cools. |
author2 |
Océan et variabilité du climat (VARCLIM) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS Paris) 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 de Paris (UP)-École normale supérieure - Paris (ENS Paris) 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 de Paris (UP)-Institut de Recherche pour le Développement (IRD)-Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-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 de Paris (UP)-Institut de Recherche pour le Développement (IRD)-Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU) Nucleus for European Modeling of the Ocean (NEMO R&D ) |
format |
Article in Journal/Newspaper |
author |
Simon, Amélie Gastineau, Guillaume Frankignoul, Claude Rousset, Clément Codron, Francis |
author_facet |
Simon, Amélie Gastineau, Guillaume Frankignoul, Claude Rousset, Clément Codron, Francis |
author_sort |
Simon, Amélie |
title |
Transient climate response to Arctic sea-ice loss with two ice-constraining methods |
title_short |
Transient climate response to Arctic sea-ice loss with two ice-constraining methods |
title_full |
Transient climate response to Arctic sea-ice loss with two ice-constraining methods |
title_fullStr |
Transient climate response to Arctic sea-ice loss with two ice-constraining methods |
title_full_unstemmed |
Transient climate response to Arctic sea-ice loss with two ice-constraining methods |
title_sort |
transient climate response to arctic sea-ice loss with two ice-constraining methods |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.archives-ouvertes.fr/hal-02947883 https://hal.archives-ouvertes.fr/hal-02947883v2/document https://hal.archives-ouvertes.fr/hal-02947883v2/file/Simon_et_al_JCLI_2021.pdf https://doi.org/10.1175/jcli-d-20-0288.1 |
geographic |
Arctic Barents Sea Pacific |
geographic_facet |
Arctic Barents Sea Pacific |
genre |
albedo Arctic Barents Sea Beaufort Sea North Atlantic North Atlantic oscillation Sea ice South Atlantic Ocean Siberia |
genre_facet |
albedo Arctic Barents Sea Beaufort Sea North Atlantic North Atlantic oscillation Sea ice South Atlantic Ocean Siberia |
op_source |
ISSN: 0894-8755 EISSN: 1520-0442 Journal of Climate https://hal.archives-ouvertes.fr/hal-02947883 Journal of Climate, American Meteorological Society, 2021, 34 (9), pp.3295-3310. ⟨10.1175/jcli-d-20-0288.1⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1175/jcli-d-20-0288.1 hal-02947883 https://hal.archives-ouvertes.fr/hal-02947883 https://hal.archives-ouvertes.fr/hal-02947883v2/document https://hal.archives-ouvertes.fr/hal-02947883v2/file/Simon_et_al_JCLI_2021.pdf doi:10.1175/jcli-d-20-0288.1 WOS: 000644149900002 |
op_doi |
https://doi.org/10.1175/jcli-d-20-0288.1 |
container_title |
Journal of Climate |
container_volume |
34 |
container_issue |
9 |
container_start_page |
3295 |
op_container_end_page |
3310 |
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1766241152446496768 |
spelling |
ftccsdartic:oai:HAL:hal-02947883v2 2023-05-15T13:10:45+02:00 Transient climate response to Arctic sea-ice loss with two ice-constraining methods Simon, Amélie Gastineau, Guillaume Frankignoul, Claude Rousset, Clément Codron, Francis Océan et variabilité du climat (VARCLIM) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS Paris) 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 de Paris (UP)-École normale supérieure - Paris (ENS Paris) 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 de Paris (UP)-Institut de Recherche pour le Développement (IRD)-Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-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 de Paris (UP)-Institut de Recherche pour le Développement (IRD)-Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU) Nucleus for European Modeling of the Ocean (NEMO R&D ) 2021-05-01 https://hal.archives-ouvertes.fr/hal-02947883 https://hal.archives-ouvertes.fr/hal-02947883v2/document https://hal.archives-ouvertes.fr/hal-02947883v2/file/Simon_et_al_JCLI_2021.pdf https://doi.org/10.1175/jcli-d-20-0288.1 en eng HAL CCSD American Meteorological Society info:eu-repo/semantics/altIdentifier/doi/10.1175/jcli-d-20-0288.1 hal-02947883 https://hal.archives-ouvertes.fr/hal-02947883 https://hal.archives-ouvertes.fr/hal-02947883v2/document https://hal.archives-ouvertes.fr/hal-02947883v2/file/Simon_et_al_JCLI_2021.pdf doi:10.1175/jcli-d-20-0288.1 WOS: 000644149900002 ISSN: 0894-8755 EISSN: 1520-0442 Journal of Climate https://hal.archives-ouvertes.fr/hal-02947883 Journal of Climate, American Meteorological Society, 2021, 34 (9), pp.3295-3310. ⟨10.1175/jcli-d-20-0288.1⟩ [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] info:eu-repo/semantics/article Journal articles 2021 ftccsdartic https://doi.org/10.1175/jcli-d-20-0288.1 2021-12-19T00:25:19Z International audience The impact of Arctic sea ice loss on the ocean and atmosphere is investigated focusing on a gradual reduction of Arctic sea ice by 20% of the annual mean, occurring within 30 years, starting from present-day conditions. Two ice-constraining methods are explored to melt Arctic sea ice in a coupled climate model, while keeping present-day conditions for external forcing. The first method uses a reduction of sea ice albedo, which modifies the incoming surface shortwave radiation. The second method uses a reduction of thermal conductivity, which changes the heat conduction flux inside ice. Reduced thermal conductivity inhibits oceanic cooling in winter and sea ice basal growth, reducing the seasonality of sea ice thickness. For similar Arctic sea ice area loss, decreasing the albedo induces larger Arctic warming than reducing the conductivity, especially in spring. Both ice-constraining methods produce similar climate impacts, but with smaller anomalies when reducing the conductivity. In the Arctic, the sea ice loss leads to an increase of the North Atlantic water inflow in the Barents Sea and eastern Arctic, while the salinity decreases and the gyre intensifies in the Beaufort Sea. In the North Atlantic, the subtropical gyre shifts southward and the Atlantic meridional overturning circulation weakens. A dipole of sea level pressure anomalies sets up in winter over northern Siberia and the North Atlantic, which resembles the negative phase of the North Atlantic Oscillation. In the tropics, the Atlantic intertropical convergence zone shifts southward as the South Atlantic Ocean warms. In addition, Walker circulation reorganizes and the southeastern Pacific Ocean cools. Article in Journal/Newspaper albedo Arctic Barents Sea Beaufort Sea North Atlantic North Atlantic oscillation Sea ice South Atlantic Ocean Siberia Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Arctic Barents Sea Pacific Journal of Climate 34 9 3295 3310 |