Impact of sea ice cover changes on the Northern Hemisphere atmospheric winter circulation
The response of the Arctic atmosphere to low and high sea ice concentration phases based on European Center for Medium-Range Weather Forecast (ECMWF) Re-Analysis Interim (ERA-Interim) atmospheric data and Hadley Centre's sea ice dataset (HadISST1) from 1989 until 2010 has been studied. Time sli...
Published in: | Tellus A: Dynamic Meteorology and Oceanography |
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Online Access: | https://epic.awi.de/id/eprint/25904/ https://epic.awi.de/id/eprint/25904/1/11595-49846-1-PB.pdf http://www.tellusa.net/index.php/tellusa/article/view/11595/ https://hdl.handle.net/10013/epic.38839 https://hdl.handle.net/10013/epic.38839.d001 |
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ftawi:oai:epic.awi.de:25904 2024-09-15T17:53:26+00:00 Impact of sea ice cover changes on the Northern Hemisphere atmospheric winter circulation Jaiser, Ralf Dethloff, Klaus Handorf, Dörthe Rinke, Annette Cohen, Judah 2012-01-02 application/pdf https://epic.awi.de/id/eprint/25904/ https://epic.awi.de/id/eprint/25904/1/11595-49846-1-PB.pdf http://www.tellusa.net/index.php/tellusa/article/view/11595/ https://hdl.handle.net/10013/epic.38839 https://hdl.handle.net/10013/epic.38839.d001 unknown https://epic.awi.de/id/eprint/25904/1/11595-49846-1-PB.pdf https://hdl.handle.net/10013/epic.38839.d001 Jaiser, R. orcid:0000-0002-5685-9637 , Dethloff, K. , Handorf, D. orcid:0000-0002-3305-6882 , Rinke, A. orcid:0000-0002-6685-9219 and Cohen, J. (2012) Impact of sea ice cover changes on the Northern Hemisphere atmospheric winter circulation , Tellus A, 64 . doi:10.3402/tellusa.v64i0.11595 <https://doi.org/10.3402/tellusa.v64i0.11595> , hdl:10013/epic.38839 EPIC3Tellus A, 64 Article isiRev 2012 ftawi https://doi.org/10.3402/tellusa.v64i0.11595 2024-06-24T04:03:41Z The response of the Arctic atmosphere to low and high sea ice concentration phases based on European Center for Medium-Range Weather Forecast (ECMWF) Re-Analysis Interim (ERA-Interim) atmospheric data and Hadley Centre's sea ice dataset (HadISST1) from 1989 until 2010 has been studied. Time slices of winter atmospheric circulation with high (1990–2000) and low (2001–2010) sea ice concentration in the preceding August/September have been analysed with respect to tropospheric interactions between planetary and baroclinic waves. It is shown that a changed sea ice concentration over the Arctic Ocean impacts differently the development of synoptic and planetary atmospheric circulation systems. During the low ice phase, stronger heat release to the atmosphere over the Arctic Ocean reduces the atmospheric vertical static stability. This leads to an earlier onset of baroclinic instability that further modulates the non-linear interactions between baroclinic wave energy fluxes on time scales of 2.5–6 d and planetary scales of 10–90 d. Our analysis suggests that Arctic sea ice concentration changes exert a remote impact on the large-scale atmospheric circulation during winter, exhibiting a barotropic structure with similar patterns of pressure anomalies at the surface and in the mid-troposphere. These are connected to pronounced planetary wave train changes notably over the North Pacific. Article in Journal/Newspaper Arctic Ocean Sea ice Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Tellus A: Dynamic Meteorology and Oceanography 64 1 11595 |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
The response of the Arctic atmosphere to low and high sea ice concentration phases based on European Center for Medium-Range Weather Forecast (ECMWF) Re-Analysis Interim (ERA-Interim) atmospheric data and Hadley Centre's sea ice dataset (HadISST1) from 1989 until 2010 has been studied. Time slices of winter atmospheric circulation with high (1990–2000) and low (2001–2010) sea ice concentration in the preceding August/September have been analysed with respect to tropospheric interactions between planetary and baroclinic waves. It is shown that a changed sea ice concentration over the Arctic Ocean impacts differently the development of synoptic and planetary atmospheric circulation systems. During the low ice phase, stronger heat release to the atmosphere over the Arctic Ocean reduces the atmospheric vertical static stability. This leads to an earlier onset of baroclinic instability that further modulates the non-linear interactions between baroclinic wave energy fluxes on time scales of 2.5–6 d and planetary scales of 10–90 d. Our analysis suggests that Arctic sea ice concentration changes exert a remote impact on the large-scale atmospheric circulation during winter, exhibiting a barotropic structure with similar patterns of pressure anomalies at the surface and in the mid-troposphere. These are connected to pronounced planetary wave train changes notably over the North Pacific. |
format |
Article in Journal/Newspaper |
author |
Jaiser, Ralf Dethloff, Klaus Handorf, Dörthe Rinke, Annette Cohen, Judah |
spellingShingle |
Jaiser, Ralf Dethloff, Klaus Handorf, Dörthe Rinke, Annette Cohen, Judah Impact of sea ice cover changes on the Northern Hemisphere atmospheric winter circulation |
author_facet |
Jaiser, Ralf Dethloff, Klaus Handorf, Dörthe Rinke, Annette Cohen, Judah |
author_sort |
Jaiser, Ralf |
title |
Impact of sea ice cover changes on the Northern Hemisphere atmospheric winter circulation |
title_short |
Impact of sea ice cover changes on the Northern Hemisphere atmospheric winter circulation |
title_full |
Impact of sea ice cover changes on the Northern Hemisphere atmospheric winter circulation |
title_fullStr |
Impact of sea ice cover changes on the Northern Hemisphere atmospheric winter circulation |
title_full_unstemmed |
Impact of sea ice cover changes on the Northern Hemisphere atmospheric winter circulation |
title_sort |
impact of sea ice cover changes on the northern hemisphere atmospheric winter circulation |
publishDate |
2012 |
url |
https://epic.awi.de/id/eprint/25904/ https://epic.awi.de/id/eprint/25904/1/11595-49846-1-PB.pdf http://www.tellusa.net/index.php/tellusa/article/view/11595/ https://hdl.handle.net/10013/epic.38839 https://hdl.handle.net/10013/epic.38839.d001 |
genre |
Arctic Ocean Sea ice |
genre_facet |
Arctic Ocean Sea ice |
op_source |
EPIC3Tellus A, 64 |
op_relation |
https://epic.awi.de/id/eprint/25904/1/11595-49846-1-PB.pdf https://hdl.handle.net/10013/epic.38839.d001 Jaiser, R. orcid:0000-0002-5685-9637 , Dethloff, K. , Handorf, D. orcid:0000-0002-3305-6882 , Rinke, A. orcid:0000-0002-6685-9219 and Cohen, J. (2012) Impact of sea ice cover changes on the Northern Hemisphere atmospheric winter circulation , Tellus A, 64 . doi:10.3402/tellusa.v64i0.11595 <https://doi.org/10.3402/tellusa.v64i0.11595> , hdl:10013/epic.38839 |
op_doi |
https://doi.org/10.3402/tellusa.v64i0.11595 |
container_title |
Tellus A: Dynamic Meteorology and Oceanography |
container_volume |
64 |
container_issue |
1 |
container_start_page |
11595 |
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1810295544236474368 |