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...
Published in: | The Cryosphere |
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ODU Digital Commons
2023
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Online Access: | https://digitalcommons.odu.edu/ccpo_pubs/384 https://doi.org/10.5194/tc-17-1107-2023 https://digitalcommons.odu.edu/context/ccpo_pubs/article/1388/viewcontent/Dinniman_2023_TheResponseofSeaIceandHighSalinityOCR.pdf |
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ftolddominionuni:oai:digitalcommons.odu.edu:ccpo_pubs-1388 2023-12-17T10:21:08+01:00 The Response of Sea Ice and High-Salinity Shelf Water in the Ross Ice Shelf Polynya to Cyclonic Atmosphere Circulations Wang, Xiaoqiao Zhang, Zhaoru Dinniman, Michael S. Uotila, Petteri Li, Xichen Zhou, Meng 2023-01-01T08:00:00Z application/pdf https://digitalcommons.odu.edu/ccpo_pubs/384 https://doi.org/10.5194/tc-17-1107-2023 https://digitalcommons.odu.edu/context/ccpo_pubs/article/1388/viewcontent/Dinniman_2023_TheResponseofSeaIceandHighSalinityOCR.pdf unknown ODU Digital Commons https://digitalcommons.odu.edu/ccpo_pubs/384 doi:10.5194/tc-17-1107-2023 https://digitalcommons.odu.edu/context/ccpo_pubs/article/1388/viewcontent/Dinniman_2023_TheResponseofSeaIceandHighSalinityOCR.pdf © Authors 2023. This work is distributed under the Creative Commons Attribution 4.0 International (CC BY 4.0) License . CCPO Publications Antarctic bottom water Atmospheric circulation Atmospheric models Bottom water Climate Coastal circulation Coasts Cyclones Cyclonic circulation Ice formation Ice shelves Land ice Meridional wind Mesoscale cyclones Mesoscale phenomena Ocean circulation Ocean currents Oceans Offshore Polynyas Precipitation Salinity Salinity effects Sea currents Sea ice Sea surface Thermohaline circulation Water circulation Wind Winds Hydrology Oceanography article 2023 ftolddominionuni https://doi.org/10.5194/tc-17-1107-2023 2023-11-20T19:09:45Z 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 Ice Shelves Ross Ice Shelf Ross Sea Sea ice Old Dominion University: ODU Digital Commons 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 |
Old Dominion University: ODU Digital Commons |
op_collection_id |
ftolddominionuni |
language |
unknown |
topic |
Antarctic bottom water Atmospheric circulation Atmospheric models Bottom water Climate Coastal circulation Coasts Cyclones Cyclonic circulation Ice formation Ice shelves Land ice Meridional wind Mesoscale cyclones Mesoscale phenomena Ocean circulation Ocean currents Oceans Offshore Polynyas Precipitation Salinity Salinity effects Sea currents Sea ice Sea surface Thermohaline circulation Water circulation Wind Winds Hydrology Oceanography |
spellingShingle |
Antarctic bottom water Atmospheric circulation Atmospheric models Bottom water Climate Coastal circulation Coasts Cyclones Cyclonic circulation Ice formation Ice shelves Land ice Meridional wind Mesoscale cyclones Mesoscale phenomena Ocean circulation Ocean currents Oceans Offshore Polynyas Precipitation Salinity Salinity effects Sea currents Sea ice Sea surface Thermohaline circulation Water circulation Wind Winds Hydrology Oceanography Wang, Xiaoqiao Zhang, Zhaoru Dinniman, Michael S. Uotila, Petteri Li, Xichen Zhou, Meng The Response of Sea Ice and High-Salinity Shelf Water in the Ross Ice Shelf Polynya to Cyclonic Atmosphere Circulations |
topic_facet |
Antarctic bottom water Atmospheric circulation Atmospheric models Bottom water Climate Coastal circulation Coasts Cyclones Cyclonic circulation Ice formation Ice shelves Land ice Meridional wind Mesoscale cyclones Mesoscale phenomena Ocean circulation Ocean currents Oceans Offshore Polynyas Precipitation Salinity Salinity effects Sea currents Sea ice Sea surface Thermohaline circulation Water circulation Wind Winds Hydrology Oceanography |
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 |
Wang, Xiaoqiao Zhang, Zhaoru Dinniman, Michael S. Uotila, Petteri Li, Xichen Zhou, Meng |
author_facet |
Wang, Xiaoqiao Zhang, Zhaoru Dinniman, Michael S. Uotila, Petteri Li, Xichen Zhou, Meng |
author_sort |
Wang, Xiaoqiao |
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 |
ODU Digital Commons |
publishDate |
2023 |
url |
https://digitalcommons.odu.edu/ccpo_pubs/384 https://doi.org/10.5194/tc-17-1107-2023 https://digitalcommons.odu.edu/context/ccpo_pubs/article/1388/viewcontent/Dinniman_2023_TheResponseofSeaIceandHighSalinityOCR.pdf |
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 Ice Shelves Ross Ice Shelf Ross Sea Sea ice |
genre_facet |
Antarc* Antarctic Ice Shelf Ice Shelves Ross Ice Shelf Ross Sea Sea ice |
op_source |
CCPO Publications |
op_relation |
https://digitalcommons.odu.edu/ccpo_pubs/384 doi:10.5194/tc-17-1107-2023 https://digitalcommons.odu.edu/context/ccpo_pubs/article/1388/viewcontent/Dinniman_2023_TheResponseofSeaIceandHighSalinityOCR.pdf |
op_rights |
© Authors 2023. This work is distributed under the Creative Commons Attribution 4.0 International (CC BY 4.0) License . |
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 |
_version_ |
1785530087474462720 |