Seasonal Variations in Circumpolar Deep Water Intrusions Into The Ross Sea Continental Shelf
Intrusions of the warm and nutrient-rich Circumpolar Deep Water (CDW) across the Ross Sea shelf break play an important role in providing heat for ice shelf basal melting and setting the physical environment for biochemical processes. Several mechanisms driving CDW intrusions into the Ross Sea were...
Published in: | Frontiers in Marine Science |
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ODU Digital Commons
2023
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Online Access: | https://digitalcommons.odu.edu/ccpo_pubs/386 https://doi.org/10.3389/fmars.2023.1020791 https://digitalcommons.odu.edu/context/ccpo_pubs/article/1390/viewcontent/Dinniman_2023_SeasonalVariationsinCircumpolarDeepWaterIntrusionsOCR.pdf |
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ftolddominionuni:oai:digitalcommons.odu.edu:ccpo_pubs-1390 2023-12-17T10:21:20+01:00 Seasonal Variations in Circumpolar Deep Water Intrusions Into The Ross Sea Continental Shelf Wang, Yufei Zhou, Meng Zhang, Zhaoru Dinniman, Michael S. 2023-01-01T08:00:00Z application/pdf https://digitalcommons.odu.edu/ccpo_pubs/386 https://doi.org/10.3389/fmars.2023.1020791 https://digitalcommons.odu.edu/context/ccpo_pubs/article/1390/viewcontent/Dinniman_2023_SeasonalVariationsinCircumpolarDeepWaterIntrusionsOCR.pdf unknown ODU Digital Commons https://digitalcommons.odu.edu/ccpo_pubs/386 doi:10.3389/fmars.2023.1020791 https://digitalcommons.odu.edu/context/ccpo_pubs/article/1390/viewcontent/Dinniman_2023_SeasonalVariationsinCircumpolarDeepWaterIntrusionsOCR.pdf © 2023 Wang, Zhou, Zhang and Dinniman. This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International License (CC BY 4.0) . The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. CCPO Publications Air-sea interaction Circumpolar deep water Climate change Continental shelves Cooling Deep water Eddies Ekman pumping Fields Heat Ice shelves Mesoscale eddies Ocean circulation Physiographic features Pumping Ross sea Salinity Sea ice Seasonal variation Seasonal variations Seasons Slope currents Stress Sverdrup transport Topography Torque Vorticity Wind Wind data Wind stress Climate Oceanography and Atmospheric Sciences and Meteorology article 2023 ftolddominionuni https://doi.org/10.3389/fmars.2023.1020791 2023-11-20T19:09:45Z Intrusions of the warm and nutrient-rich Circumpolar Deep Water (CDW) across the Ross Sea shelf break play an important role in providing heat for ice shelf basal melting and setting the physical environment for biochemical processes. Several mechanisms driving CDW intrusions into the Ross Sea were proposed such as mesoscale eddies, tidal rectification, and interactions between Antarctic Slope Current (ASC) and topographic features. The seasonal variations in the poleward transport of CDW are investigated using ERA-Interim wind data and a Ross Sea circulation model based on the Regional Ocean Modeling System (ROMS) between September 1999 and September 2014. The analyses focus on the currents along the shelf break and deep troughs on the Ross Sea shelf and discuss the wind-driven Ekman pumping in both shelf and adjacent open ocean regions. The results reveal that the poleward intrusions generally move up onto the continental shelf along the eastern flanks of deep troughs. Seasonal variations of the ocean surface stress torque exerted by wind and sea ice in the offshelf area are correlated with CDW intrusions. The maxima of CDW intrusions usually occur in austral summer. There is a significant temporal correlation on the seasonal time scale between the onshelf intrusions in deep troughs in the western Ross Sea shelf and poleward Sverdrup transports in the adjacent offshelf open ocean driven by Ekman pumping. The analysis of ocean surface stress fields also indicates that the vorticity fluxes through Ekman pumping are in favor of southward and northward transports in the eastern and western parts of the Ross Sea, respectively. The relationships between currents, CDW intrusions and ocean surface stress fields imply the importance of air-sea interactions and potential climate change to the environment in the Ross Sea. Article in Journal/Newspaper Antarc* Antarctic Ice Shelf Ice Shelves Ross Sea Sea ice Old Dominion University: ODU Digital Commons Antarctic Austral Ross Sea Frontiers in Marine Science 10 |
institution |
Open Polar |
collection |
Old Dominion University: ODU Digital Commons |
op_collection_id |
ftolddominionuni |
language |
unknown |
topic |
Air-sea interaction Circumpolar deep water Climate change Continental shelves Cooling Deep water Eddies Ekman pumping Fields Heat Ice shelves Mesoscale eddies Ocean circulation Physiographic features Pumping Ross sea Salinity Sea ice Seasonal variation Seasonal variations Seasons Slope currents Stress Sverdrup transport Topography Torque Vorticity Wind Wind data Wind stress Climate Oceanography and Atmospheric Sciences and Meteorology |
spellingShingle |
Air-sea interaction Circumpolar deep water Climate change Continental shelves Cooling Deep water Eddies Ekman pumping Fields Heat Ice shelves Mesoscale eddies Ocean circulation Physiographic features Pumping Ross sea Salinity Sea ice Seasonal variation Seasonal variations Seasons Slope currents Stress Sverdrup transport Topography Torque Vorticity Wind Wind data Wind stress Climate Oceanography and Atmospheric Sciences and Meteorology Wang, Yufei Zhou, Meng Zhang, Zhaoru Dinniman, Michael S. Seasonal Variations in Circumpolar Deep Water Intrusions Into The Ross Sea Continental Shelf |
topic_facet |
Air-sea interaction Circumpolar deep water Climate change Continental shelves Cooling Deep water Eddies Ekman pumping Fields Heat Ice shelves Mesoscale eddies Ocean circulation Physiographic features Pumping Ross sea Salinity Sea ice Seasonal variation Seasonal variations Seasons Slope currents Stress Sverdrup transport Topography Torque Vorticity Wind Wind data Wind stress Climate Oceanography and Atmospheric Sciences and Meteorology |
description |
Intrusions of the warm and nutrient-rich Circumpolar Deep Water (CDW) across the Ross Sea shelf break play an important role in providing heat for ice shelf basal melting and setting the physical environment for biochemical processes. Several mechanisms driving CDW intrusions into the Ross Sea were proposed such as mesoscale eddies, tidal rectification, and interactions between Antarctic Slope Current (ASC) and topographic features. The seasonal variations in the poleward transport of CDW are investigated using ERA-Interim wind data and a Ross Sea circulation model based on the Regional Ocean Modeling System (ROMS) between September 1999 and September 2014. The analyses focus on the currents along the shelf break and deep troughs on the Ross Sea shelf and discuss the wind-driven Ekman pumping in both shelf and adjacent open ocean regions. The results reveal that the poleward intrusions generally move up onto the continental shelf along the eastern flanks of deep troughs. Seasonal variations of the ocean surface stress torque exerted by wind and sea ice in the offshelf area are correlated with CDW intrusions. The maxima of CDW intrusions usually occur in austral summer. There is a significant temporal correlation on the seasonal time scale between the onshelf intrusions in deep troughs in the western Ross Sea shelf and poleward Sverdrup transports in the adjacent offshelf open ocean driven by Ekman pumping. The analysis of ocean surface stress fields also indicates that the vorticity fluxes through Ekman pumping are in favor of southward and northward transports in the eastern and western parts of the Ross Sea, respectively. The relationships between currents, CDW intrusions and ocean surface stress fields imply the importance of air-sea interactions and potential climate change to the environment in the Ross Sea. |
format |
Article in Journal/Newspaper |
author |
Wang, Yufei Zhou, Meng Zhang, Zhaoru Dinniman, Michael S. |
author_facet |
Wang, Yufei Zhou, Meng Zhang, Zhaoru Dinniman, Michael S. |
author_sort |
Wang, Yufei |
title |
Seasonal Variations in Circumpolar Deep Water Intrusions Into The Ross Sea Continental Shelf |
title_short |
Seasonal Variations in Circumpolar Deep Water Intrusions Into The Ross Sea Continental Shelf |
title_full |
Seasonal Variations in Circumpolar Deep Water Intrusions Into The Ross Sea Continental Shelf |
title_fullStr |
Seasonal Variations in Circumpolar Deep Water Intrusions Into The Ross Sea Continental Shelf |
title_full_unstemmed |
Seasonal Variations in Circumpolar Deep Water Intrusions Into The Ross Sea Continental Shelf |
title_sort |
seasonal variations in circumpolar deep water intrusions into the ross sea continental shelf |
publisher |
ODU Digital Commons |
publishDate |
2023 |
url |
https://digitalcommons.odu.edu/ccpo_pubs/386 https://doi.org/10.3389/fmars.2023.1020791 https://digitalcommons.odu.edu/context/ccpo_pubs/article/1390/viewcontent/Dinniman_2023_SeasonalVariationsinCircumpolarDeepWaterIntrusionsOCR.pdf |
geographic |
Antarctic Austral Ross Sea |
geographic_facet |
Antarctic Austral Ross Sea |
genre |
Antarc* Antarctic Ice Shelf Ice Shelves Ross Sea Sea ice |
genre_facet |
Antarc* Antarctic Ice Shelf Ice Shelves Ross Sea Sea ice |
op_source |
CCPO Publications |
op_relation |
https://digitalcommons.odu.edu/ccpo_pubs/386 doi:10.3389/fmars.2023.1020791 https://digitalcommons.odu.edu/context/ccpo_pubs/article/1390/viewcontent/Dinniman_2023_SeasonalVariationsinCircumpolarDeepWaterIntrusionsOCR.pdf |
op_rights |
© 2023 Wang, Zhou, Zhang and Dinniman. This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International License (CC BY 4.0) . The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
op_doi |
https://doi.org/10.3389/fmars.2023.1020791 |
container_title |
Frontiers in Marine Science |
container_volume |
10 |
_version_ |
1785533055949078528 |