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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Main Author: Aue, Lars (Dr.)
Format: Doctoral or Postdoctoral Thesis
Language:English
Published: 2024
Subjects:
Online Access: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
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spelling 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
institution 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
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