Separating the influences of low-latitude warming and sea ice loss on Northern Hemisphere climate change
Analyzing a multimodel ensemble of coupled climate model simulations forced with Arctic sea ice loss using a two-parameter pattern-scaling technique to remove the cross-coupling between low- and high-latitude responses, the sensitivity to high-latitude sea ice loss is isolated and contrasted to the...
Published in: | Journal of Climate |
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Language: | English |
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2022
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Online Access: | https://doi.org/10.1175/JCLI-D-21-0180.1 |
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ftncar:oai:drupal-site.org:articles_25475 2024-04-28T08:08:26+00:00 Separating the influences of low-latitude warming and sea ice loss on Northern Hemisphere climate change Hay, Stephanie (author) Kushner, Paul J. (author) Blackport, Russell (author) McCusker, Kelly E. (author) Oudar, Thomas (author) Sun, Lantao (author) England, Mark (author) Deser, Clara (author) Screen, James A. (author) Polvani, Lorenzo M. (author) 2022-04-15 https://doi.org/10.1175/JCLI-D-21-0180.1 en eng Journal of Climate--0894-8755--1520-0442 articles:25475 doi:10.1175/JCLI-D-21-0180.1 ark:/85065/d7x63rps Copyright 2022 American Meteorological Society article Text 2022 ftncar https://doi.org/10.1175/JCLI-D-21-0180.1 2024-04-04T17:33:50Z Analyzing a multimodel ensemble of coupled climate model simulations forced with Arctic sea ice loss using a two-parameter pattern-scaling technique to remove the cross-coupling between low- and high-latitude responses, the sensitivity to high-latitude sea ice loss is isolated and contrasted to the sensitivity to low-latitude warming. Despite some differences in experimental design, the Northern Hemisphere near-surface atmospheric sensitivity to sea ice loss is found to be robust across models in the cold season; however, a larger intermodel spread is found at the surface in boreal summer, and in the free tropospheric circulation. In contrast, the sensitivity to low-latitude warming is most robust in the free troposphere and in the warm season, with more intermodel spread in the surface ocean and surface heat flux over the Northern Hemisphere. The robust signals associated with sea ice loss include upward turbulent and longwave heat fluxes where sea ice is lost, warming and freshening of the Arctic Ocean, warming of the eastern North Pacific Ocean relative to the western North Pacific with upward turbulent heat fluxes in the Kuroshio Extension, and salinification of the shallow shelf seas of the Arctic Ocean alongside freshening in the subpolar North Atlantic Ocean. In contrast, the robust signals associated with low-latitude warming include intensified ocean warming and upward latent heat fluxes near the western boundary currents, freshening of the Pacific Ocean, salinification of the North Atlantic, and downward sensible and longwave fluxes over the ocean. Article in Journal/Newspaper Arctic Arctic Ocean Climate change North Atlantic Sea ice OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Journal of Climate 35 8 2327 2349 |
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Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
description |
Analyzing a multimodel ensemble of coupled climate model simulations forced with Arctic sea ice loss using a two-parameter pattern-scaling technique to remove the cross-coupling between low- and high-latitude responses, the sensitivity to high-latitude sea ice loss is isolated and contrasted to the sensitivity to low-latitude warming. Despite some differences in experimental design, the Northern Hemisphere near-surface atmospheric sensitivity to sea ice loss is found to be robust across models in the cold season; however, a larger intermodel spread is found at the surface in boreal summer, and in the free tropospheric circulation. In contrast, the sensitivity to low-latitude warming is most robust in the free troposphere and in the warm season, with more intermodel spread in the surface ocean and surface heat flux over the Northern Hemisphere. The robust signals associated with sea ice loss include upward turbulent and longwave heat fluxes where sea ice is lost, warming and freshening of the Arctic Ocean, warming of the eastern North Pacific Ocean relative to the western North Pacific with upward turbulent heat fluxes in the Kuroshio Extension, and salinification of the shallow shelf seas of the Arctic Ocean alongside freshening in the subpolar North Atlantic Ocean. In contrast, the robust signals associated with low-latitude warming include intensified ocean warming and upward latent heat fluxes near the western boundary currents, freshening of the Pacific Ocean, salinification of the North Atlantic, and downward sensible and longwave fluxes over the ocean. |
author2 |
Hay, Stephanie (author) Kushner, Paul J. (author) Blackport, Russell (author) McCusker, Kelly E. (author) Oudar, Thomas (author) Sun, Lantao (author) England, Mark (author) Deser, Clara (author) Screen, James A. (author) Polvani, Lorenzo M. (author) |
format |
Article in Journal/Newspaper |
title |
Separating the influences of low-latitude warming and sea ice loss on Northern Hemisphere climate change |
spellingShingle |
Separating the influences of low-latitude warming and sea ice loss on Northern Hemisphere climate change |
title_short |
Separating the influences of low-latitude warming and sea ice loss on Northern Hemisphere climate change |
title_full |
Separating the influences of low-latitude warming and sea ice loss on Northern Hemisphere climate change |
title_fullStr |
Separating the influences of low-latitude warming and sea ice loss on Northern Hemisphere climate change |
title_full_unstemmed |
Separating the influences of low-latitude warming and sea ice loss on Northern Hemisphere climate change |
title_sort |
separating the influences of low-latitude warming and sea ice loss on northern hemisphere climate change |
publishDate |
2022 |
url |
https://doi.org/10.1175/JCLI-D-21-0180.1 |
genre |
Arctic Arctic Ocean Climate change North Atlantic Sea ice |
genre_facet |
Arctic Arctic Ocean Climate change North Atlantic Sea ice |
op_relation |
Journal of Climate--0894-8755--1520-0442 articles:25475 doi:10.1175/JCLI-D-21-0180.1 ark:/85065/d7x63rps |
op_rights |
Copyright 2022 American Meteorological Society |
op_doi |
https://doi.org/10.1175/JCLI-D-21-0180.1 |
container_title |
Journal of Climate |
container_volume |
35 |
container_issue |
8 |
container_start_page |
2327 |
op_container_end_page |
2349 |
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1797577234067750912 |