Horizontal density structure and restratification of the Arctic Ocean surface layer
Author Posting. © American Meteorological Society, 2012. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Journal of Physical Oceanography 42 (2012): 659–668, doi:10.1175/JPO-D-11-0125.1. Ic...
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Language: | English |
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Online Access: | https://hdl.handle.net/1912/5188 |
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/5188 2023-05-15T14:38:16+02:00 Horizontal density structure and restratification of the Arctic Ocean surface layer Timmermans, Mary-Louise Cole, Sylvia T. Toole, John M. 2012-04 application/pdf https://hdl.handle.net/1912/5188 en_US eng American Meteorological Society https://doi.org/10.1175/JPO-D-11-0125.1 Journal of Physical Oceanography 42 (2012): 659–668 https://hdl.handle.net/1912/5188 doi:10.1175/JPO-D-11-0125.1 Journal of Physical Oceanography 42 (2012): 659–668 doi:10.1175/JPO-D-11-0125.1 Arctic Ocean dynamics Article 2012 ftwhoas https://doi.org/10.1175/JPO-D-11-0125.1 2022-05-28T22:58:34Z Author Posting. © American Meteorological Society, 2012. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Journal of Physical Oceanography 42 (2012): 659–668, doi:10.1175/JPO-D-11-0125.1. Ice-tethered profiler (ITP) measurements from the Arctic Ocean’s Canada Basin indicate an ocean surface layer beneath sea ice with significant horizontal density structure on scales of hundreds of kilometers to the order 1 km submesoscale. The observed horizontal gradients in density are dynamically important in that they are associated with restratification of the surface ocean when dense water flows under light water. Such restratification is prevalent in wintertime and competes with convective mixing upon buoyancy forcing (e.g., ice growth and brine rejection) and shear-driven mixing when the ice moves relative to the ocean. Frontal structure and estimates of the balanced Richardson number point to the likelihood of dynamical restratification by isopycnal tilt and submesoscale baroclinic instability. Based on the evidence here, it is likely that submesoscale processes play an important role in setting surface-layer properties and lateral density variability in the Arctic Ocean. Funding was provided by the National Science Foundation Office of Polar Programs Arctic Sciences Section under Awards ARC-0519899, ARC-0856479, and ARC-0806306. Support was also provided by the Woods Hole Oceanographic Institution Arctic Research Initiative. 2012-10-01 Article in Journal/Newspaper Arctic Arctic Ocean Arctic Sciences Section canada basin National Science Foundation Office of Polar Programs Sea ice Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Arctic Arctic Ocean Canada Journal of Physical Oceanography 42 4 659 668 |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
English |
topic |
Arctic Ocean dynamics |
spellingShingle |
Arctic Ocean dynamics Timmermans, Mary-Louise Cole, Sylvia T. Toole, John M. Horizontal density structure and restratification of the Arctic Ocean surface layer |
topic_facet |
Arctic Ocean dynamics |
description |
Author Posting. © American Meteorological Society, 2012. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Journal of Physical Oceanography 42 (2012): 659–668, doi:10.1175/JPO-D-11-0125.1. Ice-tethered profiler (ITP) measurements from the Arctic Ocean’s Canada Basin indicate an ocean surface layer beneath sea ice with significant horizontal density structure on scales of hundreds of kilometers to the order 1 km submesoscale. The observed horizontal gradients in density are dynamically important in that they are associated with restratification of the surface ocean when dense water flows under light water. Such restratification is prevalent in wintertime and competes with convective mixing upon buoyancy forcing (e.g., ice growth and brine rejection) and shear-driven mixing when the ice moves relative to the ocean. Frontal structure and estimates of the balanced Richardson number point to the likelihood of dynamical restratification by isopycnal tilt and submesoscale baroclinic instability. Based on the evidence here, it is likely that submesoscale processes play an important role in setting surface-layer properties and lateral density variability in the Arctic Ocean. Funding was provided by the National Science Foundation Office of Polar Programs Arctic Sciences Section under Awards ARC-0519899, ARC-0856479, and ARC-0806306. Support was also provided by the Woods Hole Oceanographic Institution Arctic Research Initiative. 2012-10-01 |
format |
Article in Journal/Newspaper |
author |
Timmermans, Mary-Louise Cole, Sylvia T. Toole, John M. |
author_facet |
Timmermans, Mary-Louise Cole, Sylvia T. Toole, John M. |
author_sort |
Timmermans, Mary-Louise |
title |
Horizontal density structure and restratification of the Arctic Ocean surface layer |
title_short |
Horizontal density structure and restratification of the Arctic Ocean surface layer |
title_full |
Horizontal density structure and restratification of the Arctic Ocean surface layer |
title_fullStr |
Horizontal density structure and restratification of the Arctic Ocean surface layer |
title_full_unstemmed |
Horizontal density structure and restratification of the Arctic Ocean surface layer |
title_sort |
horizontal density structure and restratification of the arctic ocean surface layer |
publisher |
American Meteorological Society |
publishDate |
2012 |
url |
https://hdl.handle.net/1912/5188 |
geographic |
Arctic Arctic Ocean Canada |
geographic_facet |
Arctic Arctic Ocean Canada |
genre |
Arctic Arctic Ocean Arctic Sciences Section canada basin National Science Foundation Office of Polar Programs Sea ice |
genre_facet |
Arctic Arctic Ocean Arctic Sciences Section canada basin National Science Foundation Office of Polar Programs Sea ice |
op_source |
Journal of Physical Oceanography 42 (2012): 659–668 doi:10.1175/JPO-D-11-0125.1 |
op_relation |
https://doi.org/10.1175/JPO-D-11-0125.1 Journal of Physical Oceanography 42 (2012): 659–668 https://hdl.handle.net/1912/5188 doi:10.1175/JPO-D-11-0125.1 |
op_doi |
https://doi.org/10.1175/JPO-D-11-0125.1 |
container_title |
Journal of Physical Oceanography |
container_volume |
42 |
container_issue |
4 |
container_start_page |
659 |
op_container_end_page |
668 |
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1766310377861152768 |