Effect of sea ice morphology during Arctic summer on atmospheric drag coefficients used in climate models
Realistic modeling of polar sea ice dynamics and atmospheric processes over sea ice needs a detailed representation of the near-surface atmosphericfluxes of momentum. In this study, parametrizations of neutral drag coefficients mostly used in different general circulation models are compared with a...
Published in: | Geophysical Research Letters |
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ftawi:oai:epic.awi.de:32558 2024-09-15T17:51:21+00:00 Effect of sea ice morphology during Arctic summer on atmospheric drag coefficients used in climate models Lüpkes, Christof Gryanik, Vladimir M. Rösel, Anja Birnbaum, Gerit Kaleschke, Lars 2013-01-31 https://epic.awi.de/id/eprint/32558/ https://hdl.handle.net/10013/epic.41149 unknown AMER GEOPHYSICAL UNION Lüpkes, C. orcid:0000-0001-6518-0717 , Gryanik, V. M. , Rösel, A. , Birnbaum, G. orcid:0000-0002-0252-6781 and Kaleschke, L. (2013) Effect of sea ice morphology during Arctic summer on atmospheric drag coefficients used in climate models , Geophysical Research Letters, 40 , pp. 1-6 . doi:10.1002/grl.50081 <https://doi.org/10.1002/grl.50081> , hdl:10013/epic.41149 EPIC3Geophysical Research Letters, AMER GEOPHYSICAL UNION, 40, pp. 1-6, ISSN: 0094-8276 Article isiRev 2013 ftawi https://doi.org/10.1002/grl.50081 2024-06-24T04:06:16Z Realistic modeling of polar sea ice dynamics and atmospheric processes over sea ice needs a detailed representation of the near-surface atmosphericfluxes of momentum. In this study, parametrizations of neutral drag coefficients mostly used in different general circulation models are compared with a recently developed parametrization including the impact of sea ice morphology. The new parametrization, using the sea ice and melt pond fraction as governing parameters, accounts for the effect of form drag caused by edges at leads, melt ponds, and floes. Based on remote sensing data of ice and melt pond fraction, it is shown that during Arctic summer the traditionally used drag coefficients differ from the new ones by a factor 0.5–1.2. The geographic distribution of drag coefficients obtained from both parametrizations is very different. Differences are due to a nonlinear and non-monotonic dependence of drag coefficients on sea ice concentration in the new parametrization. Article in Journal/Newspaper Arctic Sea ice Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Geophysical Research Letters 40 2 446 451 |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
Realistic modeling of polar sea ice dynamics and atmospheric processes over sea ice needs a detailed representation of the near-surface atmosphericfluxes of momentum. In this study, parametrizations of neutral drag coefficients mostly used in different general circulation models are compared with a recently developed parametrization including the impact of sea ice morphology. The new parametrization, using the sea ice and melt pond fraction as governing parameters, accounts for the effect of form drag caused by edges at leads, melt ponds, and floes. Based on remote sensing data of ice and melt pond fraction, it is shown that during Arctic summer the traditionally used drag coefficients differ from the new ones by a factor 0.5–1.2. The geographic distribution of drag coefficients obtained from both parametrizations is very different. Differences are due to a nonlinear and non-monotonic dependence of drag coefficients on sea ice concentration in the new parametrization. |
format |
Article in Journal/Newspaper |
author |
Lüpkes, Christof Gryanik, Vladimir M. Rösel, Anja Birnbaum, Gerit Kaleschke, Lars |
spellingShingle |
Lüpkes, Christof Gryanik, Vladimir M. Rösel, Anja Birnbaum, Gerit Kaleschke, Lars Effect of sea ice morphology during Arctic summer on atmospheric drag coefficients used in climate models |
author_facet |
Lüpkes, Christof Gryanik, Vladimir M. Rösel, Anja Birnbaum, Gerit Kaleschke, Lars |
author_sort |
Lüpkes, Christof |
title |
Effect of sea ice morphology during Arctic summer on atmospheric drag coefficients used in climate models |
title_short |
Effect of sea ice morphology during Arctic summer on atmospheric drag coefficients used in climate models |
title_full |
Effect of sea ice morphology during Arctic summer on atmospheric drag coefficients used in climate models |
title_fullStr |
Effect of sea ice morphology during Arctic summer on atmospheric drag coefficients used in climate models |
title_full_unstemmed |
Effect of sea ice morphology during Arctic summer on atmospheric drag coefficients used in climate models |
title_sort |
effect of sea ice morphology during arctic summer on atmospheric drag coefficients used in climate models |
publisher |
AMER GEOPHYSICAL UNION |
publishDate |
2013 |
url |
https://epic.awi.de/id/eprint/32558/ https://hdl.handle.net/10013/epic.41149 |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_source |
EPIC3Geophysical Research Letters, AMER GEOPHYSICAL UNION, 40, pp. 1-6, ISSN: 0094-8276 |
op_relation |
Lüpkes, C. orcid:0000-0001-6518-0717 , Gryanik, V. M. , Rösel, A. , Birnbaum, G. orcid:0000-0002-0252-6781 and Kaleschke, L. (2013) Effect of sea ice morphology during Arctic summer on atmospheric drag coefficients used in climate models , Geophysical Research Letters, 40 , pp. 1-6 . doi:10.1002/grl.50081 <https://doi.org/10.1002/grl.50081> , hdl:10013/epic.41149 |
op_doi |
https://doi.org/10.1002/grl.50081 |
container_title |
Geophysical Research Letters |
container_volume |
40 |
container_issue |
2 |
container_start_page |
446 |
op_container_end_page |
451 |
_version_ |
1810293229068746752 |