Analyzing links between simulated Laptev Sea sea ice and atmospheric conditions over adjoining landmasses using causal-effect networks
We investigate how sea ice interacts with the atmosphere over adjacent landmasses in the Laptev Sea region as a step towards a better understanding of the connection between sea ice and permafrost. We identify physical mechanisms as well as local and large-scale drivers of sea-ice cover with a focus...
Published in: | The Cryosphere |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Copernicus Publications
2020
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Online Access: | https://doi.org/10.5194/tc-14-4201-2020 https://noa.gwlb.de/receive/cop_mods_00054765 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00054416/tc-14-4201-2020.pdf https://tc.copernicus.org/articles/14/4201/2020/tc-14-4201-2020.pdf |
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00054765 2023-05-15T16:37:12+02:00 Analyzing links between simulated Laptev Sea sea ice and atmospheric conditions over adjoining landmasses using causal-effect networks Rehder, Zoé Niederdrenk, Anne Laura Kaleschke, Lars Kutzbach, Lars 2020-11 electronic https://doi.org/10.5194/tc-14-4201-2020 https://noa.gwlb.de/receive/cop_mods_00054765 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00054416/tc-14-4201-2020.pdf https://tc.copernicus.org/articles/14/4201/2020/tc-14-4201-2020.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-14-4201-2020 https://noa.gwlb.de/receive/cop_mods_00054765 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00054416/tc-14-4201-2020.pdf https://tc.copernicus.org/articles/14/4201/2020/tc-14-4201-2020.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2020 ftnonlinearchiv https://doi.org/10.5194/tc-14-4201-2020 2022-02-08T22:34:51Z We investigate how sea ice interacts with the atmosphere over adjacent landmasses in the Laptev Sea region as a step towards a better understanding of the connection between sea ice and permafrost. We identify physical mechanisms as well as local and large-scale drivers of sea-ice cover with a focus on one region with highly variable sea-ice cover and high sea-ice productivity: the Laptev Sea region. We analyze the output of a coupled ocean–sea-ice–atmosphere–hydrological-discharge model with two statistical methods. With the recently developed causal-effect networks we identify temporal links between different variables, while we use composites of high- and low-sea-ice-cover years to reveal spatial patterns and mean changes in variables. We find that in the model local sea-ice cover is a driven rather than a driving variable. Springtime melt of sea ice in the Laptev Sea is mainly controlled by atmospheric large-scale circulation, mediated through meridional wind speed and ice export. During refreeze in fall thermodynamic variables and feedback mechanisms are important – sea-ice cover is interconnected with air temperature, thermal radiation and specific humidity. Though low sea-ice cover leads to an enhanced southward transport of heat and moisture throughout summer, links from sea-ice cover to the atmosphere over land are weak, and both sea ice in the Laptev Sea and the atmospheric conditions over the adjacent landmasses are mainly controlled by common external drivers. Article in Journal/Newspaper Ice laptev Laptev Sea permafrost Sea ice The Cryosphere Niedersächsisches Online-Archiv NOA Laptev Sea The Cryosphere 14 11 4201 4215 |
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Open Polar |
collection |
Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Rehder, Zoé Niederdrenk, Anne Laura Kaleschke, Lars Kutzbach, Lars Analyzing links between simulated Laptev Sea sea ice and atmospheric conditions over adjoining landmasses using causal-effect networks |
topic_facet |
article Verlagsveröffentlichung |
description |
We investigate how sea ice interacts with the atmosphere over adjacent landmasses in the Laptev Sea region as a step towards a better understanding of the connection between sea ice and permafrost. We identify physical mechanisms as well as local and large-scale drivers of sea-ice cover with a focus on one region with highly variable sea-ice cover and high sea-ice productivity: the Laptev Sea region. We analyze the output of a coupled ocean–sea-ice–atmosphere–hydrological-discharge model with two statistical methods. With the recently developed causal-effect networks we identify temporal links between different variables, while we use composites of high- and low-sea-ice-cover years to reveal spatial patterns and mean changes in variables. We find that in the model local sea-ice cover is a driven rather than a driving variable. Springtime melt of sea ice in the Laptev Sea is mainly controlled by atmospheric large-scale circulation, mediated through meridional wind speed and ice export. During refreeze in fall thermodynamic variables and feedback mechanisms are important – sea-ice cover is interconnected with air temperature, thermal radiation and specific humidity. Though low sea-ice cover leads to an enhanced southward transport of heat and moisture throughout summer, links from sea-ice cover to the atmosphere over land are weak, and both sea ice in the Laptev Sea and the atmospheric conditions over the adjacent landmasses are mainly controlled by common external drivers. |
format |
Article in Journal/Newspaper |
author |
Rehder, Zoé Niederdrenk, Anne Laura Kaleschke, Lars Kutzbach, Lars |
author_facet |
Rehder, Zoé Niederdrenk, Anne Laura Kaleschke, Lars Kutzbach, Lars |
author_sort |
Rehder, Zoé |
title |
Analyzing links between simulated Laptev Sea sea ice and atmospheric conditions over adjoining landmasses using causal-effect networks |
title_short |
Analyzing links between simulated Laptev Sea sea ice and atmospheric conditions over adjoining landmasses using causal-effect networks |
title_full |
Analyzing links between simulated Laptev Sea sea ice and atmospheric conditions over adjoining landmasses using causal-effect networks |
title_fullStr |
Analyzing links between simulated Laptev Sea sea ice and atmospheric conditions over adjoining landmasses using causal-effect networks |
title_full_unstemmed |
Analyzing links between simulated Laptev Sea sea ice and atmospheric conditions over adjoining landmasses using causal-effect networks |
title_sort |
analyzing links between simulated laptev sea sea ice and atmospheric conditions over adjoining landmasses using causal-effect networks |
publisher |
Copernicus Publications |
publishDate |
2020 |
url |
https://doi.org/10.5194/tc-14-4201-2020 https://noa.gwlb.de/receive/cop_mods_00054765 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00054416/tc-14-4201-2020.pdf https://tc.copernicus.org/articles/14/4201/2020/tc-14-4201-2020.pdf |
geographic |
Laptev Sea |
geographic_facet |
Laptev Sea |
genre |
Ice laptev Laptev Sea permafrost Sea ice The Cryosphere |
genre_facet |
Ice laptev Laptev Sea permafrost Sea ice The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-14-4201-2020 https://noa.gwlb.de/receive/cop_mods_00054765 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00054416/tc-14-4201-2020.pdf https://tc.copernicus.org/articles/14/4201/2020/tc-14-4201-2020.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/tc-14-4201-2020 |
container_title |
The Cryosphere |
container_volume |
14 |
container_issue |
11 |
container_start_page |
4201 |
op_container_end_page |
4215 |
_version_ |
1766027503608004608 |