Fast atmospheric response to a sudden thinning of Arctic sea ice
In order to understand the influence of a thinner Arctic sea ice on the wintertime atmosphere, idealized ensemble experiments with increased sea ice surface temperature have been carried out with the Integrated Forecast System of the European Centre for Medium-Range Weather Forecasts. The focus is o...
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ftawi:oai:epic.awi.de:37901 2024-09-15T17:51:27+00:00 Fast atmospheric response to a sudden thinning of Arctic sea ice Semmler, Tido Jung, Thomas Serrar, Soumia 2016-02-01 application/pdf https://epic.awi.de/id/eprint/37901/ https://epic.awi.de/id/eprint/37901/1/Semmler_2016.pdf https://hdl.handle.net/10013/epic.45483 https://hdl.handle.net/10013/epic.45483.d001 unknown SPRINGER https://epic.awi.de/id/eprint/37901/1/Semmler_2016.pdf https://hdl.handle.net/10013/epic.45483.d001 Semmler, T. orcid:0000-0002-2254-4901 , Jung, T. orcid:0000-0002-2651-1293 and Serrar, S. (2016) Fast atmospheric response to a sudden thinning of Arctic sea ice , Climate Dynamics, 46 , pp. 1015-1025 . doi:10.1007/s00382-015-2629-7 <https://doi.org/10.1007/s00382-015-2629-7> , hdl:10013/epic.45483 EPIC3Climate Dynamics, SPRINGER, 46, pp. 1015-1025, ISSN: 0930-7575 Article isiRev 2016 ftawi https://doi.org/10.1007/s00382-015-2629-7 2024-06-24T04:12:21Z In order to understand the influence of a thinner Arctic sea ice on the wintertime atmosphere, idealized ensemble experiments with increased sea ice surface temperature have been carried out with the Integrated Forecast System of the European Centre for Medium-Range Weather Forecasts. The focus is on the fast atmospheric response to a sudden “thinning” of Arctic sea ice to disentangle the role of various different processes. We found that boundary layer turbulence is the most important process that distributes anomalous heat vertically. Anomalous longwave radiation plays an important role within the first few days before temperatures in the lower troposphere had time to adjust. The dynamic response tends to balance that due to boundary layer turbulence while cloud processes and convection play only a minor role. Overall the response of the atmospheric large-scale circulation is relatively small with up to 2 hPa in the mean sea level pressure during the first 15 days; the quasi-equilibrium response reached in the second and third month of the integration is about twice as large. During the first few days the response tends to be baroclinic in the whole Arctic. Already after a few days an anti-cyclonic equivalent-barotropic response develops over north-western Siberia and north-eastern Europe. The structure resembles very much that of the atmospheric equilibrium response indicating that fast tropospheric processes such as fewer quasi-barotropic cyclones entering this continental area are key opposed to slower processes such as those involving, for example, stratosphere-troposphere interaction. Article in Journal/Newspaper Arctic Sea ice Siberia Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Climate Dynamics 46 3-4 1015 1025 |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
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description |
In order to understand the influence of a thinner Arctic sea ice on the wintertime atmosphere, idealized ensemble experiments with increased sea ice surface temperature have been carried out with the Integrated Forecast System of the European Centre for Medium-Range Weather Forecasts. The focus is on the fast atmospheric response to a sudden “thinning” of Arctic sea ice to disentangle the role of various different processes. We found that boundary layer turbulence is the most important process that distributes anomalous heat vertically. Anomalous longwave radiation plays an important role within the first few days before temperatures in the lower troposphere had time to adjust. The dynamic response tends to balance that due to boundary layer turbulence while cloud processes and convection play only a minor role. Overall the response of the atmospheric large-scale circulation is relatively small with up to 2 hPa in the mean sea level pressure during the first 15 days; the quasi-equilibrium response reached in the second and third month of the integration is about twice as large. During the first few days the response tends to be baroclinic in the whole Arctic. Already after a few days an anti-cyclonic equivalent-barotropic response develops over north-western Siberia and north-eastern Europe. The structure resembles very much that of the atmospheric equilibrium response indicating that fast tropospheric processes such as fewer quasi-barotropic cyclones entering this continental area are key opposed to slower processes such as those involving, for example, stratosphere-troposphere interaction. |
format |
Article in Journal/Newspaper |
author |
Semmler, Tido Jung, Thomas Serrar, Soumia |
spellingShingle |
Semmler, Tido Jung, Thomas Serrar, Soumia Fast atmospheric response to a sudden thinning of Arctic sea ice |
author_facet |
Semmler, Tido Jung, Thomas Serrar, Soumia |
author_sort |
Semmler, Tido |
title |
Fast atmospheric response to a sudden thinning of Arctic sea ice |
title_short |
Fast atmospheric response to a sudden thinning of Arctic sea ice |
title_full |
Fast atmospheric response to a sudden thinning of Arctic sea ice |
title_fullStr |
Fast atmospheric response to a sudden thinning of Arctic sea ice |
title_full_unstemmed |
Fast atmospheric response to a sudden thinning of Arctic sea ice |
title_sort |
fast atmospheric response to a sudden thinning of arctic sea ice |
publisher |
SPRINGER |
publishDate |
2016 |
url |
https://epic.awi.de/id/eprint/37901/ https://epic.awi.de/id/eprint/37901/1/Semmler_2016.pdf https://hdl.handle.net/10013/epic.45483 https://hdl.handle.net/10013/epic.45483.d001 |
genre |
Arctic Sea ice Siberia |
genre_facet |
Arctic Sea ice Siberia |
op_source |
EPIC3Climate Dynamics, SPRINGER, 46, pp. 1015-1025, ISSN: 0930-7575 |
op_relation |
https://epic.awi.de/id/eprint/37901/1/Semmler_2016.pdf https://hdl.handle.net/10013/epic.45483.d001 Semmler, T. orcid:0000-0002-2254-4901 , Jung, T. orcid:0000-0002-2651-1293 and Serrar, S. (2016) Fast atmospheric response to a sudden thinning of Arctic sea ice , Climate Dynamics, 46 , pp. 1015-1025 . doi:10.1007/s00382-015-2629-7 <https://doi.org/10.1007/s00382-015-2629-7> , hdl:10013/epic.45483 |
op_doi |
https://doi.org/10.1007/s00382-015-2629-7 |
container_title |
Climate Dynamics |
container_volume |
46 |
container_issue |
3-4 |
container_start_page |
1015 |
op_container_end_page |
1025 |
_version_ |
1810293345735409664 |