Heat Balance in the Nordic Seas in a Global 1/12° Coupled Model
International audience The Nordic seas are a gateway to the Arctic Ocean, where Atlantic water undergoes a strong cooling during its transit. Here we investigate the heat balance of these regions in the high-resolution Met Office Global Coupled Model GC3 with a 1/12° grid. The GC3 model reproduces t...
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Format: | Article in Journal/Newspaper |
Language: | English |
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2021
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Online Access: | https://hal.science/hal-03381862 https://hal.science/hal-03381862/document https://hal.science/hal-03381862/file/heat_flux_orca12.pdf https://doi.org/10.1175/JCLI-D-20-0063.1 |
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ftunivbrest:oai:HAL:hal-03381862v1 2024-04-21T07:55:56+00:00 Heat Balance in the Nordic Seas in a Global 1/12° Coupled Model Treguier, Anne Marie Mathiot, Pierre Graham, Tim Copsey, Dan Lique, Camille Sterlin, Jean Laboratoire d'Océanographie Physique et Spatiale (LOPS) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) United Kingdom Met Office Exeter Met Office Hadley Centre (MOHC) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) Université Catholique de Louvain = Catholic University of Louvain (UCL) 2021 https://hal.science/hal-03381862 https://hal.science/hal-03381862/document https://hal.science/hal-03381862/file/heat_flux_orca12.pdf https://doi.org/10.1175/JCLI-D-20-0063.1 en eng HAL CCSD American Meteorological Society info:eu-repo/semantics/altIdentifier/doi/10.1175/JCLI-D-20-0063.1 hal-03381862 https://hal.science/hal-03381862 https://hal.science/hal-03381862/document https://hal.science/hal-03381862/file/heat_flux_orca12.pdf doi:10.1175/JCLI-D-20-0063.1 info:eu-repo/semantics/OpenAccess ISSN: 0894-8755 EISSN: 1520-0442 Journal of Climate https://hal.science/hal-03381862 Journal of Climate, 2021, 34 (1), pp.89-106. ⟨10.1175/JCLI-D-20-0063.1⟩ Arctic Atmosphere-ocean interaction Ocean dynamics Eddies Climate models Oceanic variability [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2021 ftunivbrest https://doi.org/10.1175/JCLI-D-20-0063.1 2024-04-10T23:47:36Z International audience The Nordic seas are a gateway to the Arctic Ocean, where Atlantic water undergoes a strong cooling during its transit. Here we investigate the heat balance of these regions in the high-resolution Met Office Global Coupled Model GC3 with a 1/12° grid. The GC3 model reproduces the contrasted ice conditions and ocean heat loss between the eastern and western regions of the Nordic seas. In the west (Greenland and Iceland seas), the heat loss experienced by the ocean is stronger than the atmospheric heat gain, because of the cooling by ice melt. The latter is a major contribution to the heat loss over the path of the East Greenland Current and west of Svalbard. In the model, surface fluxes balance the convergence of heat in each of the eastern and western regions. The net east–west heat exchange, integrated from Fram Strait to Iceland, is relatively small: the westward heat transport of the Return Atlantic Current over Knipovich Ridge balances the eastward heat transport by the East Icelandic Current. Time fluctuations, including eddies, are a significant contribution to the net heat transports. The eddy flux represents about 20% of the total heat transport in Denmark Strait and across Knipovich Ridge. The coupled ocean–atmosphere–ice model may overestimate the heat imported from the Atlantic and exported to the Arctic by 10% or 15%. This confirms the tendency toward higher northward heat transports as model resolution is refined, which will impact scenarios of future climate. Article in Journal/Newspaper Arctic Ocean Denmark Strait East Greenland east greenland current Fram Strait Greenland Iceland Nordic Seas Svalbard Université de Bretagne Occidentale: HAL Journal of Climate 34 1 89 106 |
institution |
Open Polar |
collection |
Université de Bretagne Occidentale: HAL |
op_collection_id |
ftunivbrest |
language |
English |
topic |
Arctic Atmosphere-ocean interaction Ocean dynamics Eddies Climate models Oceanic variability [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
Arctic Atmosphere-ocean interaction Ocean dynamics Eddies Climate models Oceanic variability [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Treguier, Anne Marie Mathiot, Pierre Graham, Tim Copsey, Dan Lique, Camille Sterlin, Jean Heat Balance in the Nordic Seas in a Global 1/12° Coupled Model |
topic_facet |
Arctic Atmosphere-ocean interaction Ocean dynamics Eddies Climate models Oceanic variability [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience The Nordic seas are a gateway to the Arctic Ocean, where Atlantic water undergoes a strong cooling during its transit. Here we investigate the heat balance of these regions in the high-resolution Met Office Global Coupled Model GC3 with a 1/12° grid. The GC3 model reproduces the contrasted ice conditions and ocean heat loss between the eastern and western regions of the Nordic seas. In the west (Greenland and Iceland seas), the heat loss experienced by the ocean is stronger than the atmospheric heat gain, because of the cooling by ice melt. The latter is a major contribution to the heat loss over the path of the East Greenland Current and west of Svalbard. In the model, surface fluxes balance the convergence of heat in each of the eastern and western regions. The net east–west heat exchange, integrated from Fram Strait to Iceland, is relatively small: the westward heat transport of the Return Atlantic Current over Knipovich Ridge balances the eastward heat transport by the East Icelandic Current. Time fluctuations, including eddies, are a significant contribution to the net heat transports. The eddy flux represents about 20% of the total heat transport in Denmark Strait and across Knipovich Ridge. The coupled ocean–atmosphere–ice model may overestimate the heat imported from the Atlantic and exported to the Arctic by 10% or 15%. This confirms the tendency toward higher northward heat transports as model resolution is refined, which will impact scenarios of future climate. |
author2 |
Laboratoire d'Océanographie Physique et Spatiale (LOPS) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) United Kingdom Met Office Exeter Met Office Hadley Centre (MOHC) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) Université Catholique de Louvain = Catholic University of Louvain (UCL) |
format |
Article in Journal/Newspaper |
author |
Treguier, Anne Marie Mathiot, Pierre Graham, Tim Copsey, Dan Lique, Camille Sterlin, Jean |
author_facet |
Treguier, Anne Marie Mathiot, Pierre Graham, Tim Copsey, Dan Lique, Camille Sterlin, Jean |
author_sort |
Treguier, Anne Marie |
title |
Heat Balance in the Nordic Seas in a Global 1/12° Coupled Model |
title_short |
Heat Balance in the Nordic Seas in a Global 1/12° Coupled Model |
title_full |
Heat Balance in the Nordic Seas in a Global 1/12° Coupled Model |
title_fullStr |
Heat Balance in the Nordic Seas in a Global 1/12° Coupled Model |
title_full_unstemmed |
Heat Balance in the Nordic Seas in a Global 1/12° Coupled Model |
title_sort |
heat balance in the nordic seas in a global 1/12° coupled model |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.science/hal-03381862 https://hal.science/hal-03381862/document https://hal.science/hal-03381862/file/heat_flux_orca12.pdf https://doi.org/10.1175/JCLI-D-20-0063.1 |
genre |
Arctic Ocean Denmark Strait East Greenland east greenland current Fram Strait Greenland Iceland Nordic Seas Svalbard |
genre_facet |
Arctic Ocean Denmark Strait East Greenland east greenland current Fram Strait Greenland Iceland Nordic Seas Svalbard |
op_source |
ISSN: 0894-8755 EISSN: 1520-0442 Journal of Climate https://hal.science/hal-03381862 Journal of Climate, 2021, 34 (1), pp.89-106. ⟨10.1175/JCLI-D-20-0063.1⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1175/JCLI-D-20-0063.1 hal-03381862 https://hal.science/hal-03381862 https://hal.science/hal-03381862/document https://hal.science/hal-03381862/file/heat_flux_orca12.pdf doi:10.1175/JCLI-D-20-0063.1 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1175/JCLI-D-20-0063.1 |
container_title |
Journal of Climate |
container_volume |
34 |
container_issue |
1 |
container_start_page |
89 |
op_container_end_page |
106 |
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1796938161955274752 |