Wind-Driven Atlantic Water Flow as a Direct Mode for Reduced Barents Sea Ice Cover
Variability in the Barents Sea ice cover on interannual and longer time scales has previously been shown to be governed by oceanic heat transport. Based on analysis of observations and results from an ocean circulation model during an event of reduced sea ice cover in the northeastern Barents Sea in...
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Online Access: | http://hdl.handle.net/11250/2479073 https://doi.org/10.1175/JCLI-D-16-0025.1 |
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ftimr:oai:imr.brage.unit.no:11250/2479073 2023-05-15T15:38:02+02:00 Wind-Driven Atlantic Water Flow as a Direct Mode for Reduced Barents Sea Ice Cover Lien, Vidar Surén Schlichtholz, Pawel Skagseth, Øystein Vikebø, Frode Bendiksen 2017 application/pdf http://hdl.handle.net/11250/2479073 https://doi.org/10.1175/JCLI-D-16-0025.1 eng eng Journal of Climate. 2017, 30 803-812. urn:issn:0894-8755 http://hdl.handle.net/11250/2479073 https://doi.org/10.1175/JCLI-D-16-0025.1 cristin:1546087 803-812 30 Journal of Climate Journal article Peer reviewed 2017 ftimr https://doi.org/10.1175/JCLI-D-16-0025.1 2021-09-23T20:15:23Z Variability in the Barents Sea ice cover on interannual and longer time scales has previously been shown to be governed by oceanic heat transport. Based on analysis of observations and results from an ocean circulation model during an event of reduced sea ice cover in the northeastern Barents Sea in winter 1993, it is shown that the ocean also plays a direct role within seasons. Positive wind stress curl and associated Ekman divergence causes a coherent increase in the Atlantic water transport along the negative thermal gradient through the Barents Sea. The immediate response connected to the associated local winds in the northeastern Barents Sea is a decrease in the sea ice cover due to advection. Despite a subsequent anomalous ocean-to-air heat loss on the order of 100 W m22 due to the open water, the increase in the ocean heat content caused by the circulation anomaly reduced refreezing on a time scale of order one month. Furthermore, it is found that coherent ocean heat transport anomalies occurred more frequently in the latter part of the last five decades during periods of positive North Atlantic Oscillation index, coinciding with the Barents Sea winter sea ice cover decline from the 1990s and onward. publishedVersion Article in Journal/Newspaper Barents Sea North Atlantic North Atlantic oscillation Sea ice Institute for Marine Research: Brage IMR Barents Sea Curl ENVELOPE(-63.071,-63.071,-70.797,-70.797) Journal of Climate 30 2 803 812 |
institution |
Open Polar |
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Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
description |
Variability in the Barents Sea ice cover on interannual and longer time scales has previously been shown to be governed by oceanic heat transport. Based on analysis of observations and results from an ocean circulation model during an event of reduced sea ice cover in the northeastern Barents Sea in winter 1993, it is shown that the ocean also plays a direct role within seasons. Positive wind stress curl and associated Ekman divergence causes a coherent increase in the Atlantic water transport along the negative thermal gradient through the Barents Sea. The immediate response connected to the associated local winds in the northeastern Barents Sea is a decrease in the sea ice cover due to advection. Despite a subsequent anomalous ocean-to-air heat loss on the order of 100 W m22 due to the open water, the increase in the ocean heat content caused by the circulation anomaly reduced refreezing on a time scale of order one month. Furthermore, it is found that coherent ocean heat transport anomalies occurred more frequently in the latter part of the last five decades during periods of positive North Atlantic Oscillation index, coinciding with the Barents Sea winter sea ice cover decline from the 1990s and onward. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Lien, Vidar Surén Schlichtholz, Pawel Skagseth, Øystein Vikebø, Frode Bendiksen |
spellingShingle |
Lien, Vidar Surén Schlichtholz, Pawel Skagseth, Øystein Vikebø, Frode Bendiksen Wind-Driven Atlantic Water Flow as a Direct Mode for Reduced Barents Sea Ice Cover |
author_facet |
Lien, Vidar Surén Schlichtholz, Pawel Skagseth, Øystein Vikebø, Frode Bendiksen |
author_sort |
Lien, Vidar Surén |
title |
Wind-Driven Atlantic Water Flow as a Direct Mode for Reduced Barents Sea Ice Cover |
title_short |
Wind-Driven Atlantic Water Flow as a Direct Mode for Reduced Barents Sea Ice Cover |
title_full |
Wind-Driven Atlantic Water Flow as a Direct Mode for Reduced Barents Sea Ice Cover |
title_fullStr |
Wind-Driven Atlantic Water Flow as a Direct Mode for Reduced Barents Sea Ice Cover |
title_full_unstemmed |
Wind-Driven Atlantic Water Flow as a Direct Mode for Reduced Barents Sea Ice Cover |
title_sort |
wind-driven atlantic water flow as a direct mode for reduced barents sea ice cover |
publishDate |
2017 |
url |
http://hdl.handle.net/11250/2479073 https://doi.org/10.1175/JCLI-D-16-0025.1 |
long_lat |
ENVELOPE(-63.071,-63.071,-70.797,-70.797) |
geographic |
Barents Sea Curl |
geographic_facet |
Barents Sea Curl |
genre |
Barents Sea North Atlantic North Atlantic oscillation Sea ice |
genre_facet |
Barents Sea North Atlantic North Atlantic oscillation Sea ice |
op_source |
803-812 30 Journal of Climate |
op_relation |
Journal of Climate. 2017, 30 803-812. urn:issn:0894-8755 http://hdl.handle.net/11250/2479073 https://doi.org/10.1175/JCLI-D-16-0025.1 cristin:1546087 |
op_doi |
https://doi.org/10.1175/JCLI-D-16-0025.1 |
container_title |
Journal of Climate |
container_volume |
30 |
container_issue |
2 |
container_start_page |
803 |
op_container_end_page |
812 |
_version_ |
1766368736828194816 |