Contrary responses of the Gulf Stream and the Kuroshio to Arctic sea ice loss
The impact on the Gulf Stream and Kuroshio from Arctic sea ice loss is investigated using the Community Climate System Model version 4 (CCSM4) model for their important roles during climate change. Results show that the Gulf Stream (Kuroshio) weakens (strengthens) in response to Arctic sea ice loss...
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2022
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Online Access: | https://doi.org/10.3390/atmos13040514 |
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ftncar:oai:drupal-site.org:articles_25363 2024-04-28T08:07:03+00:00 Contrary responses of the Gulf Stream and the Kuroshio to Arctic sea ice loss Wang, Kun (author) Wu, Linyue (author) Liu, Haiwen (author) Dan, Bo (author) Dai, Haijin (author) Deser, Clara (author) 2022-03-23 https://doi.org/10.3390/atmos13040514 en eng Atmosphere--Atmosphere--2073-4433 articles:25363 doi:10.3390/atmos13040514 ark:/85065/d7tb1bmm Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. article Text 2022 ftncar https://doi.org/10.3390/atmos13040514 2024-04-04T17:35:13Z The impact on the Gulf Stream and Kuroshio from Arctic sea ice loss is investigated using the Community Climate System Model version 4 (CCSM4) model for their important roles during climate change. Results show that the Gulf Stream (Kuroshio) weakens (strengthens) in response to Arctic sea ice loss via ocean (atmosphere) adjustments. More precisely, the Kuroshio acceleration is mainly due to the anomalous wind stress over the North Pacific, while the ocean gyre adjustments in the Atlantic are responsible for the weakened Gulf Stream. As positive buoyancy fluxes induced by Arctic sea ice loss trigger a slowdown of the Atlantic Meridional Overturning Circulation (AMOC), the Gulf Stream decelerates evidently and the current speed decreases by about 5–8 cm/s in the upper ocean. Resulting from less advection and horizontal diffusion in the temperature budget, less poleward warm water leads to narrow sea surface cooling sandwiched between strong warming in the subpolar and subtropical Atlantic. Furthermore, colder surface decreases the upward heat flux (mainly latent heat flux) along the Gulf Stream Extension (GE) path, which leads to a warming hole in the atmosphere. Article in Journal/Newspaper Arctic Climate change Sea ice OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Atmosphere 13 4 514 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
description |
The impact on the Gulf Stream and Kuroshio from Arctic sea ice loss is investigated using the Community Climate System Model version 4 (CCSM4) model for their important roles during climate change. Results show that the Gulf Stream (Kuroshio) weakens (strengthens) in response to Arctic sea ice loss via ocean (atmosphere) adjustments. More precisely, the Kuroshio acceleration is mainly due to the anomalous wind stress over the North Pacific, while the ocean gyre adjustments in the Atlantic are responsible for the weakened Gulf Stream. As positive buoyancy fluxes induced by Arctic sea ice loss trigger a slowdown of the Atlantic Meridional Overturning Circulation (AMOC), the Gulf Stream decelerates evidently and the current speed decreases by about 5–8 cm/s in the upper ocean. Resulting from less advection and horizontal diffusion in the temperature budget, less poleward warm water leads to narrow sea surface cooling sandwiched between strong warming in the subpolar and subtropical Atlantic. Furthermore, colder surface decreases the upward heat flux (mainly latent heat flux) along the Gulf Stream Extension (GE) path, which leads to a warming hole in the atmosphere. |
author2 |
Wang, Kun (author) Wu, Linyue (author) Liu, Haiwen (author) Dan, Bo (author) Dai, Haijin (author) Deser, Clara (author) |
format |
Article in Journal/Newspaper |
title |
Contrary responses of the Gulf Stream and the Kuroshio to Arctic sea ice loss |
spellingShingle |
Contrary responses of the Gulf Stream and the Kuroshio to Arctic sea ice loss |
title_short |
Contrary responses of the Gulf Stream and the Kuroshio to Arctic sea ice loss |
title_full |
Contrary responses of the Gulf Stream and the Kuroshio to Arctic sea ice loss |
title_fullStr |
Contrary responses of the Gulf Stream and the Kuroshio to Arctic sea ice loss |
title_full_unstemmed |
Contrary responses of the Gulf Stream and the Kuroshio to Arctic sea ice loss |
title_sort |
contrary responses of the gulf stream and the kuroshio to arctic sea ice loss |
publishDate |
2022 |
url |
https://doi.org/10.3390/atmos13040514 |
genre |
Arctic Climate change Sea ice |
genre_facet |
Arctic Climate change Sea ice |
op_relation |
Atmosphere--Atmosphere--2073-4433 articles:25363 doi:10.3390/atmos13040514 ark:/85065/d7tb1bmm |
op_rights |
Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. |
op_doi |
https://doi.org/10.3390/atmos13040514 |
container_title |
Atmosphere |
container_volume |
13 |
container_issue |
4 |
container_start_page |
514 |
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1797576310490398720 |