The response of sea ice and high-salinity shelf water in the Ross Ice Shelf Polynya to cyclonic atmosphere circulations
Coastal polynyas in the Ross Sea are important source regions of high-salinity shelf water (HSSW) – the precursor of Antarctic Bottom Water that supplies the lower limb of the thermohaline circulation. Here, the response of sea ice production and HSSW formation to synoptic-scale and mesoscale cyclon...
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ftdoajarticles:oai:doaj.org/article:b36b6b345f304f0fb34c0976f299a5b8 2023-05-15T13:59:14+02:00 The response of sea ice and high-salinity shelf water in the Ross Ice Shelf Polynya to cyclonic atmosphere circulations X. Wang Z. Zhang M. S. Dinniman P. Uotila X. Li M. Zhou 2023-03-01T00:00:00Z https://doi.org/10.5194/tc-17-1107-2023 https://doaj.org/article/b36b6b345f304f0fb34c0976f299a5b8 EN eng Copernicus Publications https://tc.copernicus.org/articles/17/1107/2023/tc-17-1107-2023.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-17-1107-2023 1994-0416 1994-0424 https://doaj.org/article/b36b6b345f304f0fb34c0976f299a5b8 The Cryosphere, Vol 17, Pp 1107-1126 (2023) Environmental sciences GE1-350 Geology QE1-996.5 article 2023 ftdoajarticles https://doi.org/10.5194/tc-17-1107-2023 2023-03-12T01:34:31Z Coastal polynyas in the Ross Sea are important source regions of high-salinity shelf water (HSSW) – the precursor of Antarctic Bottom Water that supplies the lower limb of the thermohaline circulation. Here, the response of sea ice production and HSSW formation to synoptic-scale and mesoscale cyclones was investigated for the Ross Ice Shelf Polynya (RISP) using a coupled ocean–sea ice–ice shelf model targeted on the Ross Sea. When synoptic-scale cyclones prevailed over RISP, sea ice production (SIP) increased rapidly by 20 %–30 % over the entire RISP. During the passage of mesoscale cyclones, SIP increased by about 2 times over the western RISP but decreased over the eastern RISP, resulting respectively from enhancement in the offshore and onshore winds. HSSW formation mainly occurred in the western RISP and was enhanced responding to the SIP increase under both types of cyclones. Promoted HSSW formation could persist for 12–60 h after the decay of the cyclones. The HSSW exports across the Drygalski Trough and the Glomar Challenger Trough were positively correlated with the meridional wind. Such correlations are mainly controlled by variations in geostrophic ocean currents that result from sea surface elevation change and density differences. Article in Journal/Newspaper Antarc* Antarctic Ice Shelf Ross Ice Shelf Ross Sea Sea ice The Cryosphere Directory of Open Access Journals: DOAJ Articles Antarctic Ross Sea Ross Ice Shelf Drygalski ENVELOPE(-61.000,-61.000,-64.717,-64.717) The Cryosphere 17 3 1107 1126 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 X. Wang Z. Zhang M. S. Dinniman P. Uotila X. Li M. Zhou The response of sea ice and high-salinity shelf water in the Ross Ice Shelf Polynya to cyclonic atmosphere circulations |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
Coastal polynyas in the Ross Sea are important source regions of high-salinity shelf water (HSSW) – the precursor of Antarctic Bottom Water that supplies the lower limb of the thermohaline circulation. Here, the response of sea ice production and HSSW formation to synoptic-scale and mesoscale cyclones was investigated for the Ross Ice Shelf Polynya (RISP) using a coupled ocean–sea ice–ice shelf model targeted on the Ross Sea. When synoptic-scale cyclones prevailed over RISP, sea ice production (SIP) increased rapidly by 20 %–30 % over the entire RISP. During the passage of mesoscale cyclones, SIP increased by about 2 times over the western RISP but decreased over the eastern RISP, resulting respectively from enhancement in the offshore and onshore winds. HSSW formation mainly occurred in the western RISP and was enhanced responding to the SIP increase under both types of cyclones. Promoted HSSW formation could persist for 12–60 h after the decay of the cyclones. The HSSW exports across the Drygalski Trough and the Glomar Challenger Trough were positively correlated with the meridional wind. Such correlations are mainly controlled by variations in geostrophic ocean currents that result from sea surface elevation change and density differences. |
format |
Article in Journal/Newspaper |
author |
X. Wang Z. Zhang M. S. Dinniman P. Uotila X. Li M. Zhou |
author_facet |
X. Wang Z. Zhang M. S. Dinniman P. Uotila X. Li M. Zhou |
author_sort |
X. Wang |
title |
The response of sea ice and high-salinity shelf water in the Ross Ice Shelf Polynya to cyclonic atmosphere circulations |
title_short |
The response of sea ice and high-salinity shelf water in the Ross Ice Shelf Polynya to cyclonic atmosphere circulations |
title_full |
The response of sea ice and high-salinity shelf water in the Ross Ice Shelf Polynya to cyclonic atmosphere circulations |
title_fullStr |
The response of sea ice and high-salinity shelf water in the Ross Ice Shelf Polynya to cyclonic atmosphere circulations |
title_full_unstemmed |
The response of sea ice and high-salinity shelf water in the Ross Ice Shelf Polynya to cyclonic atmosphere circulations |
title_sort |
response of sea ice and high-salinity shelf water in the ross ice shelf polynya to cyclonic atmosphere circulations |
publisher |
Copernicus Publications |
publishDate |
2023 |
url |
https://doi.org/10.5194/tc-17-1107-2023 https://doaj.org/article/b36b6b345f304f0fb34c0976f299a5b8 |
long_lat |
ENVELOPE(-61.000,-61.000,-64.717,-64.717) |
geographic |
Antarctic Ross Sea Ross Ice Shelf Drygalski |
geographic_facet |
Antarctic Ross Sea Ross Ice Shelf Drygalski |
genre |
Antarc* Antarctic Ice Shelf Ross Ice Shelf Ross Sea Sea ice The Cryosphere |
genre_facet |
Antarc* Antarctic Ice Shelf Ross Ice Shelf Ross Sea Sea ice The Cryosphere |
op_source |
The Cryosphere, Vol 17, Pp 1107-1126 (2023) |
op_relation |
https://tc.copernicus.org/articles/17/1107/2023/tc-17-1107-2023.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-17-1107-2023 1994-0416 1994-0424 https://doaj.org/article/b36b6b345f304f0fb34c0976f299a5b8 |
op_doi |
https://doi.org/10.5194/tc-17-1107-2023 |
container_title |
The Cryosphere |
container_volume |
17 |
container_issue |
3 |
container_start_page |
1107 |
op_container_end_page |
1126 |
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1766267754879385600 |