Improved Simulation of Antarctic Sea Ice by Parameterized Thickness of New Ice in a Coupled Climate Model
Abstract Sea ice formation over open water exerts critical control on polar atmosphere‐ocean‐ice interactions, but is only crudely represented in sea ice models. In this study, a collection depth parameterization of new ice for flux polynya models is modified by including the sea ice concentration a...
Published in: | Geophysical Research Letters |
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Online Access: | https://doi.org/10.1029/2024GL110166 https://doaj.org/article/0818e8b48455419b9880a004b718559d |
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ftdoajarticles:oai:doaj.org/article:0818e8b48455419b9880a004b718559d 2024-09-09T19:08:16+00:00 Improved Simulation of Antarctic Sea Ice by Parameterized Thickness of New Ice in a Coupled Climate Model Yongjie Fang Junchen Yao Tongwen Wu Fanghua Wu Jianglong Li 2024-08-01T00:00:00Z https://doi.org/10.1029/2024GL110166 https://doaj.org/article/0818e8b48455419b9880a004b718559d EN eng Wiley https://doi.org/10.1029/2024GL110166 https://doaj.org/toc/0094-8276 https://doaj.org/toc/1944-8007 1944-8007 0094-8276 doi:10.1029/2024GL110166 https://doaj.org/article/0818e8b48455419b9880a004b718559d Geophysical Research Letters, Vol 51, Iss 15, Pp n/a-n/a (2024) parameterization collection thickness new ice Antarctic sea ice expansion BCC‐CSM2‐MR Geophysics. Cosmic physics QC801-809 article 2024 ftdoajarticles https://doi.org/10.1029/2024GL110166 2024-08-19T14:56:40Z Abstract Sea ice formation over open water exerts critical control on polar atmosphere‐ocean‐ice interactions, but is only crudely represented in sea ice models. In this study, a collection depth parameterization of new ice for flux polynya models is modified by including the sea ice concentration and ice growth rate as additional factors. We evaluated it in a climate model BCC‐CSM2‐MR and found that it improves simulation of Antarctic sea ice concentration and thickness in most of Indian and Atlantic sectors. Disagreement between the observed Antarctic sea ice expansion during 1981–2014 and the modeled decline still exists but is mitigated when the modified scheme is implemented. Further analysis indicates that these improvements are associated with the overcoming of premature closure of open water, which enhances the response of ocean to surface wind intensification during 1981–2014, and consequently slowdowns the sea surface temperature increase and the resulting Antarctic sea ice reduction. Article in Journal/Newspaper Antarc* Antarctic Sea ice Directory of Open Access Journals: DOAJ Articles Antarctic Indian Geophysical Research Letters 51 15 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
parameterization collection thickness new ice Antarctic sea ice expansion BCC‐CSM2‐MR Geophysics. Cosmic physics QC801-809 |
spellingShingle |
parameterization collection thickness new ice Antarctic sea ice expansion BCC‐CSM2‐MR Geophysics. Cosmic physics QC801-809 Yongjie Fang Junchen Yao Tongwen Wu Fanghua Wu Jianglong Li Improved Simulation of Antarctic Sea Ice by Parameterized Thickness of New Ice in a Coupled Climate Model |
topic_facet |
parameterization collection thickness new ice Antarctic sea ice expansion BCC‐CSM2‐MR Geophysics. Cosmic physics QC801-809 |
description |
Abstract Sea ice formation over open water exerts critical control on polar atmosphere‐ocean‐ice interactions, but is only crudely represented in sea ice models. In this study, a collection depth parameterization of new ice for flux polynya models is modified by including the sea ice concentration and ice growth rate as additional factors. We evaluated it in a climate model BCC‐CSM2‐MR and found that it improves simulation of Antarctic sea ice concentration and thickness in most of Indian and Atlantic sectors. Disagreement between the observed Antarctic sea ice expansion during 1981–2014 and the modeled decline still exists but is mitigated when the modified scheme is implemented. Further analysis indicates that these improvements are associated with the overcoming of premature closure of open water, which enhances the response of ocean to surface wind intensification during 1981–2014, and consequently slowdowns the sea surface temperature increase and the resulting Antarctic sea ice reduction. |
format |
Article in Journal/Newspaper |
author |
Yongjie Fang Junchen Yao Tongwen Wu Fanghua Wu Jianglong Li |
author_facet |
Yongjie Fang Junchen Yao Tongwen Wu Fanghua Wu Jianglong Li |
author_sort |
Yongjie Fang |
title |
Improved Simulation of Antarctic Sea Ice by Parameterized Thickness of New Ice in a Coupled Climate Model |
title_short |
Improved Simulation of Antarctic Sea Ice by Parameterized Thickness of New Ice in a Coupled Climate Model |
title_full |
Improved Simulation of Antarctic Sea Ice by Parameterized Thickness of New Ice in a Coupled Climate Model |
title_fullStr |
Improved Simulation of Antarctic Sea Ice by Parameterized Thickness of New Ice in a Coupled Climate Model |
title_full_unstemmed |
Improved Simulation of Antarctic Sea Ice by Parameterized Thickness of New Ice in a Coupled Climate Model |
title_sort |
improved simulation of antarctic sea ice by parameterized thickness of new ice in a coupled climate model |
publisher |
Wiley |
publishDate |
2024 |
url |
https://doi.org/10.1029/2024GL110166 https://doaj.org/article/0818e8b48455419b9880a004b718559d |
geographic |
Antarctic Indian |
geographic_facet |
Antarctic Indian |
genre |
Antarc* Antarctic Sea ice |
genre_facet |
Antarc* Antarctic Sea ice |
op_source |
Geophysical Research Letters, Vol 51, Iss 15, Pp n/a-n/a (2024) |
op_relation |
https://doi.org/10.1029/2024GL110166 https://doaj.org/toc/0094-8276 https://doaj.org/toc/1944-8007 1944-8007 0094-8276 doi:10.1029/2024GL110166 https://doaj.org/article/0818e8b48455419b9880a004b718559d |
op_doi |
https://doi.org/10.1029/2024GL110166 |
container_title |
Geophysical Research Letters |
container_volume |
51 |
container_issue |
15 |
_version_ |
1809822493739843584 |