Atmospheric impact of Arctic Sea ice loss in a coupled ocean–atmosphere simulation
The atmospheric response to an idealized decline in Arctic sea ice is investigated in a novel fully coupled climate model experiment. In this experiment two ensembles of single-year model integrations are performed starting on 1 April, the approximate start of the ice melt season. By perturbing the...
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American Meteorological Society
2015
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ftunivreading:oai:centaur.reading.ac.uk:51159 2024-06-23T07:48:43+00:00 Atmospheric impact of Arctic Sea ice loss in a coupled ocean–atmosphere simulation Petrie, Ruth E. Shaffrey, Len C. Sutton, Rowan T. 2015-12 text https://centaur.reading.ac.uk/51159/ https://centaur.reading.ac.uk/51159/1/jcli-d-15-0316%252E1.pdf https://doi.org/10.1175/JCLI-D-15-0316.1 en eng American Meteorological Society https://centaur.reading.ac.uk/51159/1/jcli-d-15-0316%252E1.pdf Petrie, R. E. <https://centaur.reading.ac.uk/view/creators/90004632.html>, Shaffrey, L. C. <https://centaur.reading.ac.uk/view/creators/90000111.html> orcid:0000-0003-2696-752X and Sutton, R. T. <https://centaur.reading.ac.uk/view/creators/90000057.html> orcid:0000-0001-8345-8583 (2015) Atmospheric impact of Arctic Sea ice loss in a coupled ocean–atmosphere simulation. Journal of Climate, 28 (24). pp. 9606-9622. ISSN 1520-0442 doi: https://doi.org/10.1175/JCLI-D-15-0316.1 <https://doi.org/10.1175/JCLI-D-15-0316.1> Article PeerReviewed 2015 ftunivreading https://doi.org/10.1175/JCLI-D-15-0316.1 2024-06-11T15:04:44Z The atmospheric response to an idealized decline in Arctic sea ice is investigated in a novel fully coupled climate model experiment. In this experiment two ensembles of single-year model integrations are performed starting on 1 April, the approximate start of the ice melt season. By perturbing the initial conditions of sea ice thickness (SIT), declines in both sea ice concentration and SIT, which result in sea ice distributions that are similar to the recent sea ice minima of 2007 and 2012, are induced. In the ice loss regions there are strong (~3 K) local increases in sea surface temperature (SST); additionally, there are remote increases in SST in the central North Pacific and subpolar gyre in the North Atlantic. Over the central Arctic there are increases in surface air temperature (SAT) of ~8 K due to increases in ocean–atmosphere heat fluxes. There are increases in SAT over continental North America that are in good agreement with recent changes as seen by reanalysis data. It is estimated that up to two-thirds of the observed increase in SAT in this region could be related to Arctic sea ice loss. In early summer there is a significant but weak atmospheric circulation response that projects onto the summer North Atlantic Oscillation (NAO). In early summer and early autumn there is an equatorward shift of the eddy-driven jet over the North Atlantic as a result of a reduction in the meridional temperature gradients. In winter there is no projection onto a particular phase of the NAO. Article in Journal/Newspaper Arctic Arctic North Atlantic North Atlantic oscillation Sea ice CentAUR: Central Archive at the University of Reading Arctic Pacific Journal of Climate 28 24 9606 9622 |
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Open Polar |
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CentAUR: Central Archive at the University of Reading |
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ftunivreading |
language |
English |
description |
The atmospheric response to an idealized decline in Arctic sea ice is investigated in a novel fully coupled climate model experiment. In this experiment two ensembles of single-year model integrations are performed starting on 1 April, the approximate start of the ice melt season. By perturbing the initial conditions of sea ice thickness (SIT), declines in both sea ice concentration and SIT, which result in sea ice distributions that are similar to the recent sea ice minima of 2007 and 2012, are induced. In the ice loss regions there are strong (~3 K) local increases in sea surface temperature (SST); additionally, there are remote increases in SST in the central North Pacific and subpolar gyre in the North Atlantic. Over the central Arctic there are increases in surface air temperature (SAT) of ~8 K due to increases in ocean–atmosphere heat fluxes. There are increases in SAT over continental North America that are in good agreement with recent changes as seen by reanalysis data. It is estimated that up to two-thirds of the observed increase in SAT in this region could be related to Arctic sea ice loss. In early summer there is a significant but weak atmospheric circulation response that projects onto the summer North Atlantic Oscillation (NAO). In early summer and early autumn there is an equatorward shift of the eddy-driven jet over the North Atlantic as a result of a reduction in the meridional temperature gradients. In winter there is no projection onto a particular phase of the NAO. |
format |
Article in Journal/Newspaper |
author |
Petrie, Ruth E. Shaffrey, Len C. Sutton, Rowan T. |
spellingShingle |
Petrie, Ruth E. Shaffrey, Len C. Sutton, Rowan T. Atmospheric impact of Arctic Sea ice loss in a coupled ocean–atmosphere simulation |
author_facet |
Petrie, Ruth E. Shaffrey, Len C. Sutton, Rowan T. |
author_sort |
Petrie, Ruth E. |
title |
Atmospheric impact of Arctic Sea ice loss in a coupled ocean–atmosphere simulation |
title_short |
Atmospheric impact of Arctic Sea ice loss in a coupled ocean–atmosphere simulation |
title_full |
Atmospheric impact of Arctic Sea ice loss in a coupled ocean–atmosphere simulation |
title_fullStr |
Atmospheric impact of Arctic Sea ice loss in a coupled ocean–atmosphere simulation |
title_full_unstemmed |
Atmospheric impact of Arctic Sea ice loss in a coupled ocean–atmosphere simulation |
title_sort |
atmospheric impact of arctic sea ice loss in a coupled ocean–atmosphere simulation |
publisher |
American Meteorological Society |
publishDate |
2015 |
url |
https://centaur.reading.ac.uk/51159/ https://centaur.reading.ac.uk/51159/1/jcli-d-15-0316%252E1.pdf https://doi.org/10.1175/JCLI-D-15-0316.1 |
geographic |
Arctic Pacific |
geographic_facet |
Arctic Pacific |
genre |
Arctic Arctic North Atlantic North Atlantic oscillation Sea ice |
genre_facet |
Arctic Arctic North Atlantic North Atlantic oscillation Sea ice |
op_relation |
https://centaur.reading.ac.uk/51159/1/jcli-d-15-0316%252E1.pdf Petrie, R. E. <https://centaur.reading.ac.uk/view/creators/90004632.html>, Shaffrey, L. C. <https://centaur.reading.ac.uk/view/creators/90000111.html> orcid:0000-0003-2696-752X and Sutton, R. T. <https://centaur.reading.ac.uk/view/creators/90000057.html> orcid:0000-0001-8345-8583 (2015) Atmospheric impact of Arctic Sea ice loss in a coupled ocean–atmosphere simulation. Journal of Climate, 28 (24). pp. 9606-9622. ISSN 1520-0442 doi: https://doi.org/10.1175/JCLI-D-15-0316.1 <https://doi.org/10.1175/JCLI-D-15-0316.1> |
op_doi |
https://doi.org/10.1175/JCLI-D-15-0316.1 |
container_title |
Journal of Climate |
container_volume |
28 |
container_issue |
24 |
container_start_page |
9606 |
op_container_end_page |
9622 |
_version_ |
1802639047223410688 |