Tracking Labrador Sea Water property signals along the Deep Western Boundary Current
Author Posting. © American Geophysical Union, 2017. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research: Oceans 122 (2017): 5348–5366, doi:10.1002/2017JC012921. Obser...
Published in: | Journal of Geophysical Research: Oceans |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
John Wiley & Sons
2017
|
Subjects: | |
Online Access: | https://hdl.handle.net/1912/9264 |
id |
ftwhoas:oai:darchive.mblwhoilibrary.org:1912/9264 |
---|---|
record_format |
openpolar |
spelling |
ftwhoas:oai:darchive.mblwhoilibrary.org:1912/9264 2023-05-15T17:05:59+02:00 Tracking Labrador Sea Water property signals along the Deep Western Boundary Current Le Bras, Isabela A. Yashayaev, Igor Toole, John M. 2017-07-03 https://hdl.handle.net/1912/9264 en_US eng John Wiley & Sons https://doi.org/10.1002/2017JC012921 Journal of Geophysical Research: Oceans 122 (2017): 5348–5366 https://hdl.handle.net/1912/9264 doi:10.1002/2017JC012921 Journal of Geophysical Research: Oceans 122 (2017): 5348–5366 doi:10.1002/2017JC012921 Ocean observations Deep Western Boundary Current General circulation Labrador Sea Water Decadal variability Line W Article 2017 ftwhoas https://doi.org/10.1002/2017JC012921 2022-05-28T22:59:59Z Author Posting. © American Geophysical Union, 2017. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research: Oceans 122 (2017): 5348–5366, doi:10.1002/2017JC012921. Observations of the Deep Western Boundary Current (DWBC) at Line W on the western North Atlantic continental slope southeast of Cape Cod from 1995 to 2014 reveal water mass changes that are consistent with changes in source water properties upstream in the Labrador Sea. This is most evident in the cold, dense, and deep class of Labrador Sea Water (dLSW) that was created and progressively replenished and deepened by recurring winter convection during the severe winters of 1987–1994. The arrival of this record cold, fresh, and low potential vorticity anomaly at Line W lags its formation in the Labrador Sea by 3–7 years. Complementary observations along the path of the DWBC provide further evidence that this anomaly is advected along the boundary and indicate that stirring between the boundary and the interior intensifies south of the Flemish Cap. Finally, the consistency of the data with realistic advective and mixing time scales is assessed using the Waugh and Hall (2005) model framework. The data are found to be best represented by a mean transit time of 5 years from the Labrador Sea to Line W, with a leading order role for both advection by the DWBC and mixing between the boundary flow and interior waters. NSF Grant Numbers: OCE-0726720 , 1332667 , 1332834 2018-01-03 Article in Journal/Newspaper Labrador Sea North Atlantic Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Waugh ENVELOPE(-64.111,-64.111,-65.522,-65.522) Journal of Geophysical Research: Oceans 122 7 5348 5366 |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
English |
topic |
Ocean observations Deep Western Boundary Current General circulation Labrador Sea Water Decadal variability Line W |
spellingShingle |
Ocean observations Deep Western Boundary Current General circulation Labrador Sea Water Decadal variability Line W Le Bras, Isabela A. Yashayaev, Igor Toole, John M. Tracking Labrador Sea Water property signals along the Deep Western Boundary Current |
topic_facet |
Ocean observations Deep Western Boundary Current General circulation Labrador Sea Water Decadal variability Line W |
description |
Author Posting. © American Geophysical Union, 2017. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research: Oceans 122 (2017): 5348–5366, doi:10.1002/2017JC012921. Observations of the Deep Western Boundary Current (DWBC) at Line W on the western North Atlantic continental slope southeast of Cape Cod from 1995 to 2014 reveal water mass changes that are consistent with changes in source water properties upstream in the Labrador Sea. This is most evident in the cold, dense, and deep class of Labrador Sea Water (dLSW) that was created and progressively replenished and deepened by recurring winter convection during the severe winters of 1987–1994. The arrival of this record cold, fresh, and low potential vorticity anomaly at Line W lags its formation in the Labrador Sea by 3–7 years. Complementary observations along the path of the DWBC provide further evidence that this anomaly is advected along the boundary and indicate that stirring between the boundary and the interior intensifies south of the Flemish Cap. Finally, the consistency of the data with realistic advective and mixing time scales is assessed using the Waugh and Hall (2005) model framework. The data are found to be best represented by a mean transit time of 5 years from the Labrador Sea to Line W, with a leading order role for both advection by the DWBC and mixing between the boundary flow and interior waters. NSF Grant Numbers: OCE-0726720 , 1332667 , 1332834 2018-01-03 |
format |
Article in Journal/Newspaper |
author |
Le Bras, Isabela A. Yashayaev, Igor Toole, John M. |
author_facet |
Le Bras, Isabela A. Yashayaev, Igor Toole, John M. |
author_sort |
Le Bras, Isabela A. |
title |
Tracking Labrador Sea Water property signals along the Deep Western Boundary Current |
title_short |
Tracking Labrador Sea Water property signals along the Deep Western Boundary Current |
title_full |
Tracking Labrador Sea Water property signals along the Deep Western Boundary Current |
title_fullStr |
Tracking Labrador Sea Water property signals along the Deep Western Boundary Current |
title_full_unstemmed |
Tracking Labrador Sea Water property signals along the Deep Western Boundary Current |
title_sort |
tracking labrador sea water property signals along the deep western boundary current |
publisher |
John Wiley & Sons |
publishDate |
2017 |
url |
https://hdl.handle.net/1912/9264 |
long_lat |
ENVELOPE(-64.111,-64.111,-65.522,-65.522) |
geographic |
Waugh |
geographic_facet |
Waugh |
genre |
Labrador Sea North Atlantic |
genre_facet |
Labrador Sea North Atlantic |
op_source |
Journal of Geophysical Research: Oceans 122 (2017): 5348–5366 doi:10.1002/2017JC012921 |
op_relation |
https://doi.org/10.1002/2017JC012921 Journal of Geophysical Research: Oceans 122 (2017): 5348–5366 https://hdl.handle.net/1912/9264 doi:10.1002/2017JC012921 |
op_doi |
https://doi.org/10.1002/2017JC012921 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
122 |
container_issue |
7 |
container_start_page |
5348 |
op_container_end_page |
5366 |
_version_ |
1766060867698294784 |