Understanding differences in North Atlantic poleward ocean heat transport and its variability in global climate models
The ocean heat transport from the North Atlantic to the Barents Sea impacts the sea ice extent and the energy budget of the Arctic. The analyzed climate models from the fifth (CMIP5) and sixth Coupled Model Intercomparison Project phase 6 (CMIP6) phases of the Coupled Model Intercomparison Project s...
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Online Access: | https://hdl.handle.net/11250/2890304 https://doi.org/10.1029/2021GL096683 |
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ftunivbergen:oai:bora.uib.no:11250/2890304 2023-05-15T15:04:49+02:00 Understanding differences in North Atlantic poleward ocean heat transport and its variability in global climate models Madonna, Erica Sandø, Anne Britt 2021 application/pdf https://hdl.handle.net/11250/2890304 https://doi.org/10.1029/2021GL096683 eng eng AGU Norges forskningsråd: 276730 Notur/NorStore: NS9252K urn:issn:0094-8276 https://hdl.handle.net/11250/2890304 https://doi.org/10.1029/2021GL096683 cristin:1967250 Geophysical Research Letters. 2021, 48, e2021GL096683. Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2021 The Author(s) e2021GL096683 Geophysical Research Letters 48 Journal article Peer reviewed 2021 ftunivbergen https://doi.org/10.1029/2021GL096683 2023-03-14T17:39:12Z The ocean heat transport from the North Atlantic to the Barents Sea impacts the sea ice extent and the energy budget of the Arctic. The analyzed climate models from the fifth (CMIP5) and sixth Coupled Model Intercomparison Project phase 6 (CMIP6) phases of the Coupled Model Intercomparison Project show large intermodel differences in the ocean heat transport with biases of several Terawatts at the Iceland-Scotland Ridge and Barents Sea Opening (BSO). While both model generations show a large spread in mean volume transports, in CMIP6 temperatures are more homogeneous and realistic, yielding heat transports closer to observations. On all time scales, changes in heat transport reflect changes in volume transport, while temperature changes affect the heat transport variability on longer time scales, especially at the BSO. The temporal variability of heat and volume transports is linked to wind forcing south of Iceland and along the Norwegian coast in all models but has different magnitudes. publishedVersion Article in Journal/Newspaper Arctic Barents Sea Iceland North Atlantic Sea ice University of Bergen: Bergen Open Research Archive (BORA-UiB) Arctic Barents Sea Geophysical Research Letters 49 1 |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
description |
The ocean heat transport from the North Atlantic to the Barents Sea impacts the sea ice extent and the energy budget of the Arctic. The analyzed climate models from the fifth (CMIP5) and sixth Coupled Model Intercomparison Project phase 6 (CMIP6) phases of the Coupled Model Intercomparison Project show large intermodel differences in the ocean heat transport with biases of several Terawatts at the Iceland-Scotland Ridge and Barents Sea Opening (BSO). While both model generations show a large spread in mean volume transports, in CMIP6 temperatures are more homogeneous and realistic, yielding heat transports closer to observations. On all time scales, changes in heat transport reflect changes in volume transport, while temperature changes affect the heat transport variability on longer time scales, especially at the BSO. The temporal variability of heat and volume transports is linked to wind forcing south of Iceland and along the Norwegian coast in all models but has different magnitudes. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Madonna, Erica Sandø, Anne Britt |
spellingShingle |
Madonna, Erica Sandø, Anne Britt Understanding differences in North Atlantic poleward ocean heat transport and its variability in global climate models |
author_facet |
Madonna, Erica Sandø, Anne Britt |
author_sort |
Madonna, Erica |
title |
Understanding differences in North Atlantic poleward ocean heat transport and its variability in global climate models |
title_short |
Understanding differences in North Atlantic poleward ocean heat transport and its variability in global climate models |
title_full |
Understanding differences in North Atlantic poleward ocean heat transport and its variability in global climate models |
title_fullStr |
Understanding differences in North Atlantic poleward ocean heat transport and its variability in global climate models |
title_full_unstemmed |
Understanding differences in North Atlantic poleward ocean heat transport and its variability in global climate models |
title_sort |
understanding differences in north atlantic poleward ocean heat transport and its variability in global climate models |
publisher |
AGU |
publishDate |
2021 |
url |
https://hdl.handle.net/11250/2890304 https://doi.org/10.1029/2021GL096683 |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic Barents Sea Iceland North Atlantic Sea ice |
genre_facet |
Arctic Barents Sea Iceland North Atlantic Sea ice |
op_source |
e2021GL096683 Geophysical Research Letters 48 |
op_relation |
Norges forskningsråd: 276730 Notur/NorStore: NS9252K urn:issn:0094-8276 https://hdl.handle.net/11250/2890304 https://doi.org/10.1029/2021GL096683 cristin:1967250 Geophysical Research Letters. 2021, 48, e2021GL096683. |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2021 The Author(s) |
op_doi |
https://doi.org/10.1029/2021GL096683 |
container_title |
Geophysical Research Letters |
container_volume |
49 |
container_issue |
1 |
_version_ |
1766336536130879488 |