Mechanisms underlying recent Arctic atlantification
Recent warming and reduced sea ice concentrations in the Atlantic sector of the Arctic Ocean are the main signatures of ongoing Arctic “Atlantification.” The mechanisms driving the warming trends are nevertheless still debated, particularly regarding the relative importance of oceanic and atmospheri...
Published in: | Geophysical Research Letters |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2020
|
Subjects: | |
Online Access: | https://hdl.handle.net/11250/2753280 https://doi.org/10.1029/2020GL088036 |
id |
ftunivbergen:oai:bora.uib.no:11250/2753280 |
---|---|
record_format |
openpolar |
spelling |
ftunivbergen:oai:bora.uib.no:11250/2753280 2023-05-15T14:47:53+02:00 Mechanisms underlying recent Arctic atlantification Asbjørnsen, Helene Årthun, Marius Skagseth, Øystein Eldevik, Tor 2020-06-20 application/pdf https://hdl.handle.net/11250/2753280 https://doi.org/10.1029/2020GL088036 eng eng Wiley urn:issn:0094-8276 https://hdl.handle.net/11250/2753280 https://doi.org/10.1029/2020GL088036 cristin:1854538 . Geophysical Research Letters. 2020, 47, e2020GL088036 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2020 The Authors e2020GL088036 Geophysical Research Letters 47:e2020GL088036 15 1-9 47 Journal article Peer reviewed 2020 ftunivbergen https://doi.org/10.1029/2020GL088036 2023-03-14T17:41:16Z Recent warming and reduced sea ice concentrations in the Atlantic sector of the Arctic Ocean are the main signatures of ongoing Arctic “Atlantification.” The mechanisms driving the warming trends are nevertheless still debated, particularly regarding the relative importance of oceanic and atmospheric heat fluxes. Here, heat budgets along main Atlantic water pathways through the Barents Sea and Fram Strait are constructed to investigate the mechanisms of Atlantification during 1993–2014. The largest warming trends occur south of the winter ice edge, with ocean advection as the main driver. Warming in the marginal ice zone is mainly due to low surface heat loss from the 1990s to the mid‐2000s. In the ice‐covered northwestern Barents Sea, ocean advection and air‐sea heat fluxes act in concert to drive a gradual warming of the upper ocean. Despite a weakened stratification, no evidence is found of vertical oceanic temperature fluxes driving this upper‐ocean warming. publishedVersion Article in Journal/Newspaper Arctic Arctic Ocean Barents Sea Fram Strait Sea ice University of Bergen: Bergen Open Research Archive (BORA-UiB) Arctic Arctic Ocean Barents Sea Geophysical Research Letters 47 15 |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
description |
Recent warming and reduced sea ice concentrations in the Atlantic sector of the Arctic Ocean are the main signatures of ongoing Arctic “Atlantification.” The mechanisms driving the warming trends are nevertheless still debated, particularly regarding the relative importance of oceanic and atmospheric heat fluxes. Here, heat budgets along main Atlantic water pathways through the Barents Sea and Fram Strait are constructed to investigate the mechanisms of Atlantification during 1993–2014. The largest warming trends occur south of the winter ice edge, with ocean advection as the main driver. Warming in the marginal ice zone is mainly due to low surface heat loss from the 1990s to the mid‐2000s. In the ice‐covered northwestern Barents Sea, ocean advection and air‐sea heat fluxes act in concert to drive a gradual warming of the upper ocean. Despite a weakened stratification, no evidence is found of vertical oceanic temperature fluxes driving this upper‐ocean warming. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Asbjørnsen, Helene Årthun, Marius Skagseth, Øystein Eldevik, Tor |
spellingShingle |
Asbjørnsen, Helene Årthun, Marius Skagseth, Øystein Eldevik, Tor Mechanisms underlying recent Arctic atlantification |
author_facet |
Asbjørnsen, Helene Årthun, Marius Skagseth, Øystein Eldevik, Tor |
author_sort |
Asbjørnsen, Helene |
title |
Mechanisms underlying recent Arctic atlantification |
title_short |
Mechanisms underlying recent Arctic atlantification |
title_full |
Mechanisms underlying recent Arctic atlantification |
title_fullStr |
Mechanisms underlying recent Arctic atlantification |
title_full_unstemmed |
Mechanisms underlying recent Arctic atlantification |
title_sort |
mechanisms underlying recent arctic atlantification |
publisher |
Wiley |
publishDate |
2020 |
url |
https://hdl.handle.net/11250/2753280 https://doi.org/10.1029/2020GL088036 |
geographic |
Arctic Arctic Ocean Barents Sea |
geographic_facet |
Arctic Arctic Ocean Barents Sea |
genre |
Arctic Arctic Ocean Barents Sea Fram Strait Sea ice |
genre_facet |
Arctic Arctic Ocean Barents Sea Fram Strait Sea ice |
op_source |
e2020GL088036 Geophysical Research Letters 47:e2020GL088036 15 1-9 47 |
op_relation |
urn:issn:0094-8276 https://hdl.handle.net/11250/2753280 https://doi.org/10.1029/2020GL088036 cristin:1854538 . Geophysical Research Letters. 2020, 47, e2020GL088036 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2020 The Authors |
op_doi |
https://doi.org/10.1029/2020GL088036 |
container_title |
Geophysical Research Letters |
container_volume |
47 |
container_issue |
15 |
_version_ |
1766318985389801472 |