The northern Barents Sea during 1970–2016: From seabed to surface in the Arctic warming hotspot
Global warming is amplified in the cold and white Arctic, where strong positive feedback mechanisms associated with, e.g., changes in surface conditions and the vertical structure of the Arctic atmosphere enhance the warming. The Arctic sea ice cover is described as a sensitive indicator for global...
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Language: | English |
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ftunivbergen:oai:bora.uib.no:1956/18447 2023-05-15T14:26:51+02:00 The northern Barents Sea during 1970–2016: From seabed to surface in the Arctic warming hotspot Lind, Sigrid 2018-05-09 application/pdf https://hdl.handle.net/1956/18447 eng eng The University of Bergen Paper I: Lind, S. & Ingvaldsen, R. B. (2012): Variability and impacts of Atlantic Water entering the Barents Sea from the north, Deep-Sea Research I, 62: 70–88. The article is available in the main thesis. The article is also available at: https://doi.org/10.1016/j.dsr.2011.12.007 Paper II: Lind, S., Ingvaldsen, R. B. & Furevik, T. (2016): Arctic layer salinity controls heat loss from deep Atlantic layer in seasonally ice-covered areas of the Barents Sea, Geophysical Research Letters, 43. The article is available in the main thesis. The article is also available at: https://doi.org/10.1002/2016GL068421 Paper III: Lind, S., Ingvaldsen, R. B. & Furevik, T.: Declining sea ice import and freshwater loss causes Arctic warming hotspot. Full text not available in BORA. https://hdl.handle.net/1956/18447 cristin:1584504 Attribution CC BY-NC. This item's Creative Commons-license does not apply to the published papers/articles in the thesis. http://creativecommons.org/licenses/by-nc/4.0/ Copyright the Author Doctoral thesis 2018 ftunivbergen 2023-03-14T17:41:24Z Global warming is amplified in the cold and white Arctic, where strong positive feedback mechanisms associated with, e.g., changes in surface conditions and the vertical structure of the Arctic atmosphere enhance the warming. The Arctic sea ice cover is described as a sensitive indicator for global warming, despite substantial internal climate variability in the region. The contribution to Arctic climate change from the oceanic heat source – the deep Atlantic layer – is to a large extent unknown, as there are only sparse measurements of the upward heat fluxes from the ocean, and it is not well understood which factors make the heat fluxes vary, laterally and temporally. This is perhaps one of the last big unknowns in the Arctic climate puzzle. The Arctic warming has a distinct regional maximum where the winter sea ice decline and the surface warming are greatest. The northern Barents Sea is in this ‘Arctic warming hotspot’ and here the warming extends high up into the lower atmosphere and deep down into the water column. The Arctic warming hotspot has been linked to large-scale changes in the atmospheric circulation and mid-latitude weather extremes. As a consequence of the warming, structural changes are observed in the Barents Sea ecosystem, a productive and complex Arctic-boreal shelf ecosystem, inhabiting both valuable commercial fish stocks and vulnerable sea iceassociated marine mammals. The varying position of the sea ice edge in the Barents Sea is a complicating factor for activities across a range of sectors, including research, ecosystem management, fisheries, petroleum, shipping and tourism, and is therefore both a national and a geopolitical issue. The triggering factors and governing mechanisms for the ongoing rapid warming are not well understood, although increased heat losses to the atmosphere in autumn and winter is a likely consequence of the reduced sea ice cover. It is not known what role the ocean plays in the Arctic warming hotspot, and what the ongoing processes here can tell us about how ... Doctoral or Postdoctoral Thesis Arctic Arctic Barents Sea Climate change Global warming Sea ice University of Bergen: Bergen Open Research Archive (BORA-UiB) Arctic Barents Sea Deep Sea Research Part I: Oceanographic Research Papers 62 70 88 |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
description |
Global warming is amplified in the cold and white Arctic, where strong positive feedback mechanisms associated with, e.g., changes in surface conditions and the vertical structure of the Arctic atmosphere enhance the warming. The Arctic sea ice cover is described as a sensitive indicator for global warming, despite substantial internal climate variability in the region. The contribution to Arctic climate change from the oceanic heat source – the deep Atlantic layer – is to a large extent unknown, as there are only sparse measurements of the upward heat fluxes from the ocean, and it is not well understood which factors make the heat fluxes vary, laterally and temporally. This is perhaps one of the last big unknowns in the Arctic climate puzzle. The Arctic warming has a distinct regional maximum where the winter sea ice decline and the surface warming are greatest. The northern Barents Sea is in this ‘Arctic warming hotspot’ and here the warming extends high up into the lower atmosphere and deep down into the water column. The Arctic warming hotspot has been linked to large-scale changes in the atmospheric circulation and mid-latitude weather extremes. As a consequence of the warming, structural changes are observed in the Barents Sea ecosystem, a productive and complex Arctic-boreal shelf ecosystem, inhabiting both valuable commercial fish stocks and vulnerable sea iceassociated marine mammals. The varying position of the sea ice edge in the Barents Sea is a complicating factor for activities across a range of sectors, including research, ecosystem management, fisheries, petroleum, shipping and tourism, and is therefore both a national and a geopolitical issue. The triggering factors and governing mechanisms for the ongoing rapid warming are not well understood, although increased heat losses to the atmosphere in autumn and winter is a likely consequence of the reduced sea ice cover. It is not known what role the ocean plays in the Arctic warming hotspot, and what the ongoing processes here can tell us about how ... |
format |
Doctoral or Postdoctoral Thesis |
author |
Lind, Sigrid |
spellingShingle |
Lind, Sigrid The northern Barents Sea during 1970–2016: From seabed to surface in the Arctic warming hotspot |
author_facet |
Lind, Sigrid |
author_sort |
Lind, Sigrid |
title |
The northern Barents Sea during 1970–2016: From seabed to surface in the Arctic warming hotspot |
title_short |
The northern Barents Sea during 1970–2016: From seabed to surface in the Arctic warming hotspot |
title_full |
The northern Barents Sea during 1970–2016: From seabed to surface in the Arctic warming hotspot |
title_fullStr |
The northern Barents Sea during 1970–2016: From seabed to surface in the Arctic warming hotspot |
title_full_unstemmed |
The northern Barents Sea during 1970–2016: From seabed to surface in the Arctic warming hotspot |
title_sort |
northern barents sea during 1970–2016: from seabed to surface in the arctic warming hotspot |
publisher |
The University of Bergen |
publishDate |
2018 |
url |
https://hdl.handle.net/1956/18447 |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic Arctic Barents Sea Climate change Global warming Sea ice |
genre_facet |
Arctic Arctic Barents Sea Climate change Global warming Sea ice |
op_relation |
Paper I: Lind, S. & Ingvaldsen, R. B. (2012): Variability and impacts of Atlantic Water entering the Barents Sea from the north, Deep-Sea Research I, 62: 70–88. The article is available in the main thesis. The article is also available at: https://doi.org/10.1016/j.dsr.2011.12.007 Paper II: Lind, S., Ingvaldsen, R. B. & Furevik, T. (2016): Arctic layer salinity controls heat loss from deep Atlantic layer in seasonally ice-covered areas of the Barents Sea, Geophysical Research Letters, 43. The article is available in the main thesis. The article is also available at: https://doi.org/10.1002/2016GL068421 Paper III: Lind, S., Ingvaldsen, R. B. & Furevik, T.: Declining sea ice import and freshwater loss causes Arctic warming hotspot. Full text not available in BORA. https://hdl.handle.net/1956/18447 cristin:1584504 |
op_rights |
Attribution CC BY-NC. This item's Creative Commons-license does not apply to the published papers/articles in the thesis. http://creativecommons.org/licenses/by-nc/4.0/ Copyright the Author |
container_title |
Deep Sea Research Part I: Oceanographic Research Papers |
container_volume |
62 |
container_start_page |
70 |
op_container_end_page |
88 |
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1766300303941959680 |