A Volume‐Conserved Approach to Estimating Sea‐Ice Production in Antarctic Polynyas
Abstract Accurate estimation of sea‐ice production (SIP) is crucial to understanding the formation of Antarctic Bottom Water (AABW). Existing SIP estimates depend on the heat‐budget method, using atmospheric reanalysis together with satellite‐derived sea‐ice thickness data, and make an unrealistic a...
Published in: | Geophysical Research Letters |
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Online Access: | https://doi.org/10.1029/2022GL101859 https://doaj.org/article/a19c87c437c84d3d9f396e0b7fb00d92 |
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ftdoajarticles:oai:doaj.org/article:a19c87c437c84d3d9f396e0b7fb00d92 2024-09-09T19:10:15+00:00 A Volume‐Conserved Approach to Estimating Sea‐Ice Production in Antarctic Polynyas Y. Lin Q. Yang Q. Shi Y. Nakayama D. Chen 2023-02-01T00:00:00Z https://doi.org/10.1029/2022GL101859 https://doaj.org/article/a19c87c437c84d3d9f396e0b7fb00d92 EN eng Wiley https://doi.org/10.1029/2022GL101859 https://doaj.org/toc/0094-8276 https://doaj.org/toc/1944-8007 1944-8007 0094-8276 doi:10.1029/2022GL101859 https://doaj.org/article/a19c87c437c84d3d9f396e0b7fb00d92 Geophysical Research Letters, Vol 50, Iss 4, Pp n/a-n/a (2023) Geophysics. Cosmic physics QC801-809 article 2023 ftdoajarticles https://doi.org/10.1029/2022GL101859 2024-08-05T17:49:23Z Abstract Accurate estimation of sea‐ice production (SIP) is crucial to understanding the formation of Antarctic Bottom Water (AABW). Existing SIP estimates depend on the heat‐budget method, using atmospheric reanalysis together with satellite‐derived sea‐ice thickness data, and make an unrealistic assumption of no ocean heat flux occurring below the ice. Here, we propose a new method to estimate SIP based on the sea‐ice volume‐conservation (VC) theory. This new method can consider cases with sea‐ice melting (negative SIP). For a latent‐heat polynya—the Ross Sea Polynya—this method captures the synoptic SIP variations affected by warm‐water intrusions, including small‐scale melting and freezing patterns. Using the new VC approach for a sensible‐heat polynya, the Maud Rise Polynya, the sub‐sea‐ice oceanic heat flux was indirectly estimated, and the sea‐ice melting rate induced by warm water uplifted by Ekman pumping was estimated to be 0.15 and 1.44 cm d−1 for 2016 and 2017, respectively. Article in Journal/Newspaper Antarc* Antarctic Ross Sea Sea ice Directory of Open Access Journals: DOAJ Articles Antarctic Maud Rise ENVELOPE(3.000,3.000,-66.000,-66.000) Ross Sea Geophysical Research Letters 50 4 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Geophysics. Cosmic physics QC801-809 |
spellingShingle |
Geophysics. Cosmic physics QC801-809 Y. Lin Q. Yang Q. Shi Y. Nakayama D. Chen A Volume‐Conserved Approach to Estimating Sea‐Ice Production in Antarctic Polynyas |
topic_facet |
Geophysics. Cosmic physics QC801-809 |
description |
Abstract Accurate estimation of sea‐ice production (SIP) is crucial to understanding the formation of Antarctic Bottom Water (AABW). Existing SIP estimates depend on the heat‐budget method, using atmospheric reanalysis together with satellite‐derived sea‐ice thickness data, and make an unrealistic assumption of no ocean heat flux occurring below the ice. Here, we propose a new method to estimate SIP based on the sea‐ice volume‐conservation (VC) theory. This new method can consider cases with sea‐ice melting (negative SIP). For a latent‐heat polynya—the Ross Sea Polynya—this method captures the synoptic SIP variations affected by warm‐water intrusions, including small‐scale melting and freezing patterns. Using the new VC approach for a sensible‐heat polynya, the Maud Rise Polynya, the sub‐sea‐ice oceanic heat flux was indirectly estimated, and the sea‐ice melting rate induced by warm water uplifted by Ekman pumping was estimated to be 0.15 and 1.44 cm d−1 for 2016 and 2017, respectively. |
format |
Article in Journal/Newspaper |
author |
Y. Lin Q. Yang Q. Shi Y. Nakayama D. Chen |
author_facet |
Y. Lin Q. Yang Q. Shi Y. Nakayama D. Chen |
author_sort |
Y. Lin |
title |
A Volume‐Conserved Approach to Estimating Sea‐Ice Production in Antarctic Polynyas |
title_short |
A Volume‐Conserved Approach to Estimating Sea‐Ice Production in Antarctic Polynyas |
title_full |
A Volume‐Conserved Approach to Estimating Sea‐Ice Production in Antarctic Polynyas |
title_fullStr |
A Volume‐Conserved Approach to Estimating Sea‐Ice Production in Antarctic Polynyas |
title_full_unstemmed |
A Volume‐Conserved Approach to Estimating Sea‐Ice Production in Antarctic Polynyas |
title_sort |
volume‐conserved approach to estimating sea‐ice production in antarctic polynyas |
publisher |
Wiley |
publishDate |
2023 |
url |
https://doi.org/10.1029/2022GL101859 https://doaj.org/article/a19c87c437c84d3d9f396e0b7fb00d92 |
long_lat |
ENVELOPE(3.000,3.000,-66.000,-66.000) |
geographic |
Antarctic Maud Rise Ross Sea |
geographic_facet |
Antarctic Maud Rise Ross Sea |
genre |
Antarc* Antarctic Ross Sea Sea ice |
genre_facet |
Antarc* Antarctic Ross Sea Sea ice |
op_source |
Geophysical Research Letters, Vol 50, Iss 4, Pp n/a-n/a (2023) |
op_relation |
https://doi.org/10.1029/2022GL101859 https://doaj.org/toc/0094-8276 https://doaj.org/toc/1944-8007 1944-8007 0094-8276 doi:10.1029/2022GL101859 https://doaj.org/article/a19c87c437c84d3d9f396e0b7fb00d92 |
op_doi |
https://doi.org/10.1029/2022GL101859 |
container_title |
Geophysical Research Letters |
container_volume |
50 |
container_issue |
4 |
_version_ |
1809824947399294976 |