Bathymetry-constrained ocean geostrophic currents play a key role in shaping the sea ice circulation in the Canada Basin, Arctic Ocean
Abstract Satellite-based observations and a pan-Arctic coupled sea ice-ocean model are utilized to study the effect of ocean geostrophic currents on large-scale sea ice circulation in the Canada Basin, Arctic Ocean. We find that surface winds primarily drive sea ice drifts in the west–east direction...
Published in: | Environmental Research Letters |
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Online Access: | http://dx.doi.org/10.1088/1748-9326/ad6baa https://iopscience.iop.org/article/10.1088/1748-9326/ad6baa https://iopscience.iop.org/article/10.1088/1748-9326/ad6baa/pdf |
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crioppubl:10.1088/1748-9326/ad6baa 2024-09-15T17:53:25+00:00 Bathymetry-constrained ocean geostrophic currents play a key role in shaping the sea ice circulation in the Canada Basin, Arctic Ocean Leng, Hengling He, Hailun Chen, Dake Lin, Peigen Yang, Yang Wang, Zhaomin National Natural Science Foundation of China Shanghai Frontiers Science Center of Polar Science Scientific Research Fund of the Second Institute of Oceanography, MNR China Postdoctoral Science Foundation Shanghai Pujiang Program 2024 http://dx.doi.org/10.1088/1748-9326/ad6baa https://iopscience.iop.org/article/10.1088/1748-9326/ad6baa https://iopscience.iop.org/article/10.1088/1748-9326/ad6baa/pdf unknown IOP Publishing https://creativecommons.org/licenses/by/4.0/ https://iopscience.iop.org/info/page/text-and-data-mining Environmental Research Letters volume 19, issue 9, page 094040 ISSN 1748-9326 journal-article 2024 crioppubl https://doi.org/10.1088/1748-9326/ad6baa 2024-08-19T04:15:10Z Abstract Satellite-based observations and a pan-Arctic coupled sea ice-ocean model are utilized to study the effect of ocean geostrophic currents on large-scale sea ice circulation in the Canada Basin, Arctic Ocean. We find that surface winds primarily drive sea ice drifts in the west–east direction, while the geostrophic currents in the Beaufort Gyre promote north–south ice drifts. Wind fluctuations can create variable ice drifts, yet geostrophic currents respond more slowly due to their larger vertical scale, serving as a slowly-evolving conveyor belt for maintaining the anticyclonic ice circulation. It is further demonstrated that the bathymetry can regulate the movement of sea ice via constraining the expansion of ocean circulation. This mechanism is indirect in the sense that the ice is far from the seafloor. Our research underscores the necessity of considering the bathymetry-constrained geostrophic currents in understanding Arctic sea ice dynamics. With the rapid retreat of Arctic sea ice, the multi-scale interactions between ice drifts and ocean currents may have significant implications for the Arctic ecosystem, climate, and shipping corridors. Article in Journal/Newspaper Arctic Ocean canada basin Sea ice IOP Publishing Environmental Research Letters 19 9 094040 |
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IOP Publishing |
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Abstract Satellite-based observations and a pan-Arctic coupled sea ice-ocean model are utilized to study the effect of ocean geostrophic currents on large-scale sea ice circulation in the Canada Basin, Arctic Ocean. We find that surface winds primarily drive sea ice drifts in the west–east direction, while the geostrophic currents in the Beaufort Gyre promote north–south ice drifts. Wind fluctuations can create variable ice drifts, yet geostrophic currents respond more slowly due to their larger vertical scale, serving as a slowly-evolving conveyor belt for maintaining the anticyclonic ice circulation. It is further demonstrated that the bathymetry can regulate the movement of sea ice via constraining the expansion of ocean circulation. This mechanism is indirect in the sense that the ice is far from the seafloor. Our research underscores the necessity of considering the bathymetry-constrained geostrophic currents in understanding Arctic sea ice dynamics. With the rapid retreat of Arctic sea ice, the multi-scale interactions between ice drifts and ocean currents may have significant implications for the Arctic ecosystem, climate, and shipping corridors. |
author2 |
National Natural Science Foundation of China Shanghai Frontiers Science Center of Polar Science Scientific Research Fund of the Second Institute of Oceanography, MNR China Postdoctoral Science Foundation Shanghai Pujiang Program |
format |
Article in Journal/Newspaper |
author |
Leng, Hengling He, Hailun Chen, Dake Lin, Peigen Yang, Yang Wang, Zhaomin |
spellingShingle |
Leng, Hengling He, Hailun Chen, Dake Lin, Peigen Yang, Yang Wang, Zhaomin Bathymetry-constrained ocean geostrophic currents play a key role in shaping the sea ice circulation in the Canada Basin, Arctic Ocean |
author_facet |
Leng, Hengling He, Hailun Chen, Dake Lin, Peigen Yang, Yang Wang, Zhaomin |
author_sort |
Leng, Hengling |
title |
Bathymetry-constrained ocean geostrophic currents play a key role in shaping the sea ice circulation in the Canada Basin, Arctic Ocean |
title_short |
Bathymetry-constrained ocean geostrophic currents play a key role in shaping the sea ice circulation in the Canada Basin, Arctic Ocean |
title_full |
Bathymetry-constrained ocean geostrophic currents play a key role in shaping the sea ice circulation in the Canada Basin, Arctic Ocean |
title_fullStr |
Bathymetry-constrained ocean geostrophic currents play a key role in shaping the sea ice circulation in the Canada Basin, Arctic Ocean |
title_full_unstemmed |
Bathymetry-constrained ocean geostrophic currents play a key role in shaping the sea ice circulation in the Canada Basin, Arctic Ocean |
title_sort |
bathymetry-constrained ocean geostrophic currents play a key role in shaping the sea ice circulation in the canada basin, arctic ocean |
publisher |
IOP Publishing |
publishDate |
2024 |
url |
http://dx.doi.org/10.1088/1748-9326/ad6baa https://iopscience.iop.org/article/10.1088/1748-9326/ad6baa https://iopscience.iop.org/article/10.1088/1748-9326/ad6baa/pdf |
genre |
Arctic Ocean canada basin Sea ice |
genre_facet |
Arctic Ocean canada basin Sea ice |
op_source |
Environmental Research Letters volume 19, issue 9, page 094040 ISSN 1748-9326 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ https://iopscience.iop.org/info/page/text-and-data-mining |
op_doi |
https://doi.org/10.1088/1748-9326/ad6baa |
container_title |
Environmental Research Letters |
container_volume |
19 |
container_issue |
9 |
container_start_page |
094040 |
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1810295512419532800 |