Eddies in the Western Arctic Ocean From Spaceborne SAR Observations Over Open Ocean and Marginal Ice Zones
The Western Arctic Ocean is a host to major ocean circulation systems, many of which generate eddies that can transport water masses and corresponding tracers over long distances from their formation sites. However, comprehensive observations of critical eddy characteristics are currently not availa...
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ftcaltechauth:oai:authors.library.caltech.edu:99431 2023-05-15T14:26:53+02:00 Eddies in the Western Arctic Ocean From Spaceborne SAR Observations Over Open Ocean and Marginal Ice Zones Kozlov, Igor E. Artamonova, Anastasia V. Manucharyan, Georgy E. Kubryakov, Arseny A. 2019-09 application/pdf https://authors.library.caltech.edu/99431/ https://authors.library.caltech.edu/99431/2/Kozlov_et_al-2019-Journal_of_Geophysical_Research__Oceans.pdf https://resolver.caltech.edu/CaltechAUTHORS:20191024-085839345 en eng American Geophysical Union https://authors.library.caltech.edu/99431/2/Kozlov_et_al-2019-Journal_of_Geophysical_Research__Oceans.pdf Kozlov, Igor E. and Artamonova, Anastasia V. and Manucharyan, Georgy E. and Kubryakov, Arseny A. (2019) Eddies in the Western Arctic Ocean From Spaceborne SAR Observations Over Open Ocean and Marginal Ice Zones. Journal of Geophysical Research. Oceans, 124 (9). pp. 6601-6616. ISSN 2169-9275. doi:10.1029/2019JC015113. https://resolver.caltech.edu/CaltechAUTHORS:20191024-085839345 <https://resolver.caltech.edu/CaltechAUTHORS:20191024-085839345> other Article PeerReviewed 2019 ftcaltechauth https://doi.org/10.1029/2019JC015113 2021-11-18T18:52:46Z The Western Arctic Ocean is a host to major ocean circulation systems, many of which generate eddies that can transport water masses and corresponding tracers over long distances from their formation sites. However, comprehensive observations of critical eddy characteristics are currently not available and are limited to spatially and temporally sparse in situ observations. Here we use high‐resolution spaceborne synthetic aperture radar measurements to detect eddies from their surface imprints in ice‐free sea surface roughness, and in sea ice patterns throughout marginal ice zones. We provide the first estimate of eddy characteristics extending over the seasonally ice‐free and marginal ice zone regions of the Western Arctic Ocean, including their locations, diameters, and monthly distribution. Using available synthetic aperture radar data, we identified over 4,000 open ocean eddies, as well as over 3,500 eddies in marginal ice zones from June to October in 2007, 2011, and 2016. Eddies range in size between 0.5 and 100 km and are frequently found over the shelf and near continental slopes but also present in the deep Canada Basin and over the Chukchi Plateau. We find that cyclonic eddies are twice more frequent compared to anticyclonic eddies at the surface, distinct from the dominating anticyclonic eddies observed at depth by in situ moorings and ice‐tethered profilers. Our study supports the notion that eddies are ubiquitous in the Western Arctic Ocean even in the presence of sea ice and emphasizes the need for improved ocean observations and modeling at eddy scales. Article in Journal/Newspaper Arctic Arctic Arctic Ocean canada basin Chukchi Sea ice Caltech Authors (California Institute of Technology) Arctic Arctic Ocean Canada Journal of Geophysical Research: Oceans 124 9 6601 6616 |
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Caltech Authors (California Institute of Technology) |
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language |
English |
description |
The Western Arctic Ocean is a host to major ocean circulation systems, many of which generate eddies that can transport water masses and corresponding tracers over long distances from their formation sites. However, comprehensive observations of critical eddy characteristics are currently not available and are limited to spatially and temporally sparse in situ observations. Here we use high‐resolution spaceborne synthetic aperture radar measurements to detect eddies from their surface imprints in ice‐free sea surface roughness, and in sea ice patterns throughout marginal ice zones. We provide the first estimate of eddy characteristics extending over the seasonally ice‐free and marginal ice zone regions of the Western Arctic Ocean, including their locations, diameters, and monthly distribution. Using available synthetic aperture radar data, we identified over 4,000 open ocean eddies, as well as over 3,500 eddies in marginal ice zones from June to October in 2007, 2011, and 2016. Eddies range in size between 0.5 and 100 km and are frequently found over the shelf and near continental slopes but also present in the deep Canada Basin and over the Chukchi Plateau. We find that cyclonic eddies are twice more frequent compared to anticyclonic eddies at the surface, distinct from the dominating anticyclonic eddies observed at depth by in situ moorings and ice‐tethered profilers. Our study supports the notion that eddies are ubiquitous in the Western Arctic Ocean even in the presence of sea ice and emphasizes the need for improved ocean observations and modeling at eddy scales. |
format |
Article in Journal/Newspaper |
author |
Kozlov, Igor E. Artamonova, Anastasia V. Manucharyan, Georgy E. Kubryakov, Arseny A. |
spellingShingle |
Kozlov, Igor E. Artamonova, Anastasia V. Manucharyan, Georgy E. Kubryakov, Arseny A. Eddies in the Western Arctic Ocean From Spaceborne SAR Observations Over Open Ocean and Marginal Ice Zones |
author_facet |
Kozlov, Igor E. Artamonova, Anastasia V. Manucharyan, Georgy E. Kubryakov, Arseny A. |
author_sort |
Kozlov, Igor E. |
title |
Eddies in the Western Arctic Ocean From Spaceborne SAR Observations Over Open Ocean and Marginal Ice Zones |
title_short |
Eddies in the Western Arctic Ocean From Spaceborne SAR Observations Over Open Ocean and Marginal Ice Zones |
title_full |
Eddies in the Western Arctic Ocean From Spaceborne SAR Observations Over Open Ocean and Marginal Ice Zones |
title_fullStr |
Eddies in the Western Arctic Ocean From Spaceborne SAR Observations Over Open Ocean and Marginal Ice Zones |
title_full_unstemmed |
Eddies in the Western Arctic Ocean From Spaceborne SAR Observations Over Open Ocean and Marginal Ice Zones |
title_sort |
eddies in the western arctic ocean from spaceborne sar observations over open ocean and marginal ice zones |
publisher |
American Geophysical Union |
publishDate |
2019 |
url |
https://authors.library.caltech.edu/99431/ https://authors.library.caltech.edu/99431/2/Kozlov_et_al-2019-Journal_of_Geophysical_Research__Oceans.pdf https://resolver.caltech.edu/CaltechAUTHORS:20191024-085839345 |
geographic |
Arctic Arctic Ocean Canada |
geographic_facet |
Arctic Arctic Ocean Canada |
genre |
Arctic Arctic Arctic Ocean canada basin Chukchi Sea ice |
genre_facet |
Arctic Arctic Arctic Ocean canada basin Chukchi Sea ice |
op_relation |
https://authors.library.caltech.edu/99431/2/Kozlov_et_al-2019-Journal_of_Geophysical_Research__Oceans.pdf Kozlov, Igor E. and Artamonova, Anastasia V. and Manucharyan, Georgy E. and Kubryakov, Arseny A. (2019) Eddies in the Western Arctic Ocean From Spaceborne SAR Observations Over Open Ocean and Marginal Ice Zones. Journal of Geophysical Research. Oceans, 124 (9). pp. 6601-6616. ISSN 2169-9275. doi:10.1029/2019JC015113. https://resolver.caltech.edu/CaltechAUTHORS:20191024-085839345 <https://resolver.caltech.edu/CaltechAUTHORS:20191024-085839345> |
op_rights |
other |
op_doi |
https://doi.org/10.1029/2019JC015113 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
124 |
container_issue |
9 |
container_start_page |
6601 |
op_container_end_page |
6616 |
_version_ |
1766300345808453632 |