Cyclone impacts on sea ice in the Atlantic Arctic Ocean
The Arctic is the hot spot of the ongoing, global climate change. Over the last decades, near-surface temperatures in the Arctic have been rising almost four times faster than on global average. This amplified warming of the Arctic and the associated rapid changes of its environment are largely infl...
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ftubpotsdam:oai:kobv.de-opus4-uni-potsdam:63445 2024-06-23T07:49:05+00:00 Cyclone impacts on sea ice in the Atlantic Arctic Ocean Auswirkungen von Zyklonen auf das Meereis im Atlantischen Arktischen Ozean Aue, Lars (Dr.) 2024 application/pdf https://publishup.uni-potsdam.de/frontdoor/index/index/docId/63445 https://nbn-resolving.org/urn:nbn:de:kobv:517-opus4-634458 https://doi.org/10.25932/publishup-63445 https://publishup.uni-potsdam.de/files/63445/aue_diss.pdf eng eng https://publishup.uni-potsdam.de/frontdoor/index/index/docId/63445 urn:nbn:de:kobv:517-opus4-634458 https://nbn-resolving.org/urn:nbn:de:kobv:517-opus4-634458 https://doi.org/10.25932/publishup-63445 https://publishup.uni-potsdam.de/files/63445/aue_diss.pdf http://creativecommons.org/licenses/by-nc/4.0/ info:eu-repo/semantics/openAccess ddc:530 Institut für Physik und Astronomie Extern doctoralthesis doc-type:doctoralThesis 2024 ftubpotsdam https://doi.org/10.25932/publishup-63445 2024-06-05T00:10:03Z The Arctic is the hot spot of the ongoing, global climate change. Over the last decades, near-surface temperatures in the Arctic have been rising almost four times faster than on global average. This amplified warming of the Arctic and the associated rapid changes of its environment are largely influenced by interactions between individual components of the Arctic climate system. On daily to weekly time scales, storms can have major impacts on the Arctic sea-ice cover and are thus an important part of these interactions within the Arctic climate. The sea-ice impacts of storms are related to high wind speeds, which enhance the drift and deformation of sea ice, as well as to changes in the surface energy budget in association with air mass advection, which impact the seasonal sea-ice growth and melt. The occurrence of storms in the Arctic is typically associated with the passage of transient cyclones. Even though the above described mechanisms how storms/cyclones impact the Arctic sea ice are in principal known, there is a lack of statistical quantification of these effects. In accordance with that, the overarching objective of this thesis is to statistically quantify cyclone impacts on sea-ice concentration (SIC) in the Atlantic Arctic Ocean over the last four decades. In order to further advance the understanding of the related mechanisms, an additional objective is to separate dynamic and thermodynamic cyclone impacts on sea ice and assess their relative importance. Finally, this thesis aims to quantify recent changes in cyclone impacts on SIC. These research objectives are tackled utilizing various data sets, including atmospheric and oceanic reanalysis data as well as a coupled model simulation and a cyclone tracking algorithm. Results from this thesis demonstrate that cyclones are significantly impacting SIC in the Atlantic Arctic Ocean from autumn to spring, while there are mostly no significant impacts in summer. The strength and the sign (SIC decreasing or SIC increasing) of the cyclone impacts strongly ... Doctoral or Postdoctoral Thesis Arctic Arctic Ocean Arktis* Atlantic Arctic Atlantic-Arctic Climate change Sea ice University of Potsdam: publish.UP Arctic Arctic Ocean |
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Open Polar |
collection |
University of Potsdam: publish.UP |
op_collection_id |
ftubpotsdam |
language |
English |
topic |
ddc:530 Institut für Physik und Astronomie Extern |
spellingShingle |
ddc:530 Institut für Physik und Astronomie Extern Aue, Lars (Dr.) Cyclone impacts on sea ice in the Atlantic Arctic Ocean |
topic_facet |
ddc:530 Institut für Physik und Astronomie Extern |
description |
The Arctic is the hot spot of the ongoing, global climate change. Over the last decades, near-surface temperatures in the Arctic have been rising almost four times faster than on global average. This amplified warming of the Arctic and the associated rapid changes of its environment are largely influenced by interactions between individual components of the Arctic climate system. On daily to weekly time scales, storms can have major impacts on the Arctic sea-ice cover and are thus an important part of these interactions within the Arctic climate. The sea-ice impacts of storms are related to high wind speeds, which enhance the drift and deformation of sea ice, as well as to changes in the surface energy budget in association with air mass advection, which impact the seasonal sea-ice growth and melt. The occurrence of storms in the Arctic is typically associated with the passage of transient cyclones. Even though the above described mechanisms how storms/cyclones impact the Arctic sea ice are in principal known, there is a lack of statistical quantification of these effects. In accordance with that, the overarching objective of this thesis is to statistically quantify cyclone impacts on sea-ice concentration (SIC) in the Atlantic Arctic Ocean over the last four decades. In order to further advance the understanding of the related mechanisms, an additional objective is to separate dynamic and thermodynamic cyclone impacts on sea ice and assess their relative importance. Finally, this thesis aims to quantify recent changes in cyclone impacts on SIC. These research objectives are tackled utilizing various data sets, including atmospheric and oceanic reanalysis data as well as a coupled model simulation and a cyclone tracking algorithm. Results from this thesis demonstrate that cyclones are significantly impacting SIC in the Atlantic Arctic Ocean from autumn to spring, while there are mostly no significant impacts in summer. The strength and the sign (SIC decreasing or SIC increasing) of the cyclone impacts strongly ... |
format |
Doctoral or Postdoctoral Thesis |
author |
Aue, Lars (Dr.) |
author_facet |
Aue, Lars (Dr.) |
author_sort |
Aue, Lars (Dr.) |
title |
Cyclone impacts on sea ice in the Atlantic Arctic Ocean |
title_short |
Cyclone impacts on sea ice in the Atlantic Arctic Ocean |
title_full |
Cyclone impacts on sea ice in the Atlantic Arctic Ocean |
title_fullStr |
Cyclone impacts on sea ice in the Atlantic Arctic Ocean |
title_full_unstemmed |
Cyclone impacts on sea ice in the Atlantic Arctic Ocean |
title_sort |
cyclone impacts on sea ice in the atlantic arctic ocean |
publishDate |
2024 |
url |
https://publishup.uni-potsdam.de/frontdoor/index/index/docId/63445 https://nbn-resolving.org/urn:nbn:de:kobv:517-opus4-634458 https://doi.org/10.25932/publishup-63445 https://publishup.uni-potsdam.de/files/63445/aue_diss.pdf |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Arktis* Atlantic Arctic Atlantic-Arctic Climate change Sea ice |
genre_facet |
Arctic Arctic Ocean Arktis* Atlantic Arctic Atlantic-Arctic Climate change Sea ice |
op_relation |
https://publishup.uni-potsdam.de/frontdoor/index/index/docId/63445 urn:nbn:de:kobv:517-opus4-634458 https://nbn-resolving.org/urn:nbn:de:kobv:517-opus4-634458 https://doi.org/10.25932/publishup-63445 https://publishup.uni-potsdam.de/files/63445/aue_diss.pdf |
op_rights |
http://creativecommons.org/licenses/by-nc/4.0/ info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.25932/publishup-63445 |
_version_ |
1802639362609905664 |