On the origin of water masses in the Beaufort Gyre
The Beaufort Gyre is a key feature of the Arctic Ocean, acting as a reservoir for freshwater in the region. Depending on whether the prevailing atmospheric circulation in the Arctic is anticyclonic or cyclonic, either a net accumulation or release of freshwater occurs. The sources of freshwater to t...
Published in: | Journal of Geophysical Research: Oceans |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2019
|
Subjects: | |
Online Access: | http://nora.nerc.ac.uk/id/eprint/524826/ https://nora.nerc.ac.uk/id/eprint/524826/1/Kelly_et_al-2019-Journal_of_Geophysical_Research__Oceans.pdf https://doi.org/10.1029/2019JC015022 |
id |
ftnerc:oai:nora.nerc.ac.uk:524826 |
---|---|
record_format |
openpolar |
spelling |
ftnerc:oai:nora.nerc.ac.uk:524826 2023-05-15T14:43:52+02:00 On the origin of water masses in the Beaufort Gyre Kelly, S. J. Proshutinsky, A. Popova, E. K. Aksenov, Y. K. Yool, A. 2019-08-20 text http://nora.nerc.ac.uk/id/eprint/524826/ https://nora.nerc.ac.uk/id/eprint/524826/1/Kelly_et_al-2019-Journal_of_Geophysical_Research__Oceans.pdf https://doi.org/10.1029/2019JC015022 en eng https://nora.nerc.ac.uk/id/eprint/524826/1/Kelly_et_al-2019-Journal_of_Geophysical_Research__Oceans.pdf Kelly, S. J.; Proshutinsky, A.; Popova, E. K. orcid:0000-0002-2012-708X Aksenov, Y. K. orcid:0000-0001-6132-3434 Yool, A. orcid:0000-0002-9879-2776 . 2019 On the origin of water masses in the Beaufort Gyre. Journal of Geophysical Research: Oceans, 124 (7). 4696-4709. https://doi.org/10.1029/2019JC015022 <https://doi.org/10.1029/2019JC015022> cc_by_4 CC-BY Publication - Article PeerReviewed 2019 ftnerc https://doi.org/10.1029/2019JC015022 2023-02-04T19:49:04Z The Beaufort Gyre is a key feature of the Arctic Ocean, acting as a reservoir for freshwater in the region. Depending on whether the prevailing atmospheric circulation in the Arctic is anticyclonic or cyclonic, either a net accumulation or release of freshwater occurs. The sources of freshwater to the Arctic Ocean are well established and include contributions from the North American and Eurasian Rivers, the Bering Strait Pacific water inflow, sea ice meltwater, and precipitation, but their contribution to the Beaufort Gyre freshwater accumulation varies with changes in the atmospheric circulation. Here we use a Lagrangian backward tracking technique in conjunction with the 1/12‐degree resolution Nucleus for European Modelling of the Ocean model to investigate how sources of freshwater to the Beaufort Gyre have changed in recent decades, focusing on increase in the Pacific water content in the gyre between the late 1980s and early 2000s. Using empirical orthogonal functions we analyze the change in the Arctic oceanic circulation that occurred between the 1980s and 2000s. We highlight a “waiting room” advective pathway that was present in the 1980s and provide evidence that this pathway was caused by a shift in the center of Ekman transport convergence in the Arctic. We discuss the role of these changes as a contributing factor to changes in the stratification, and hence potentially the biology, of the Beaufort Gyre region. Article in Journal/Newspaper Arctic Arctic Ocean Bering Strait Sea ice Natural Environment Research Council: NERC Open Research Archive Arctic Arctic Ocean Bering Strait Pacific Journal of Geophysical Research: Oceans 124 7 4696 4709 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
The Beaufort Gyre is a key feature of the Arctic Ocean, acting as a reservoir for freshwater in the region. Depending on whether the prevailing atmospheric circulation in the Arctic is anticyclonic or cyclonic, either a net accumulation or release of freshwater occurs. The sources of freshwater to the Arctic Ocean are well established and include contributions from the North American and Eurasian Rivers, the Bering Strait Pacific water inflow, sea ice meltwater, and precipitation, but their contribution to the Beaufort Gyre freshwater accumulation varies with changes in the atmospheric circulation. Here we use a Lagrangian backward tracking technique in conjunction with the 1/12‐degree resolution Nucleus for European Modelling of the Ocean model to investigate how sources of freshwater to the Beaufort Gyre have changed in recent decades, focusing on increase in the Pacific water content in the gyre between the late 1980s and early 2000s. Using empirical orthogonal functions we analyze the change in the Arctic oceanic circulation that occurred between the 1980s and 2000s. We highlight a “waiting room” advective pathway that was present in the 1980s and provide evidence that this pathway was caused by a shift in the center of Ekman transport convergence in the Arctic. We discuss the role of these changes as a contributing factor to changes in the stratification, and hence potentially the biology, of the Beaufort Gyre region. |
format |
Article in Journal/Newspaper |
author |
Kelly, S. J. Proshutinsky, A. Popova, E. K. Aksenov, Y. K. Yool, A. |
spellingShingle |
Kelly, S. J. Proshutinsky, A. Popova, E. K. Aksenov, Y. K. Yool, A. On the origin of water masses in the Beaufort Gyre |
author_facet |
Kelly, S. J. Proshutinsky, A. Popova, E. K. Aksenov, Y. K. Yool, A. |
author_sort |
Kelly, S. J. |
title |
On the origin of water masses in the Beaufort Gyre |
title_short |
On the origin of water masses in the Beaufort Gyre |
title_full |
On the origin of water masses in the Beaufort Gyre |
title_fullStr |
On the origin of water masses in the Beaufort Gyre |
title_full_unstemmed |
On the origin of water masses in the Beaufort Gyre |
title_sort |
on the origin of water masses in the beaufort gyre |
publishDate |
2019 |
url |
http://nora.nerc.ac.uk/id/eprint/524826/ https://nora.nerc.ac.uk/id/eprint/524826/1/Kelly_et_al-2019-Journal_of_Geophysical_Research__Oceans.pdf https://doi.org/10.1029/2019JC015022 |
geographic |
Arctic Arctic Ocean Bering Strait Pacific |
geographic_facet |
Arctic Arctic Ocean Bering Strait Pacific |
genre |
Arctic Arctic Ocean Bering Strait Sea ice |
genre_facet |
Arctic Arctic Ocean Bering Strait Sea ice |
op_relation |
https://nora.nerc.ac.uk/id/eprint/524826/1/Kelly_et_al-2019-Journal_of_Geophysical_Research__Oceans.pdf Kelly, S. J.; Proshutinsky, A.; Popova, E. K. orcid:0000-0002-2012-708X Aksenov, Y. K. orcid:0000-0001-6132-3434 Yool, A. orcid:0000-0002-9879-2776 . 2019 On the origin of water masses in the Beaufort Gyre. Journal of Geophysical Research: Oceans, 124 (7). 4696-4709. https://doi.org/10.1029/2019JC015022 <https://doi.org/10.1029/2019JC015022> |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1029/2019JC015022 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
124 |
container_issue |
7 |
container_start_page |
4696 |
op_container_end_page |
4709 |
_version_ |
1766315451703361536 |