Quantification of ice production in Laptev Sea polynyas and its sensitivity to thin-ice parameterizations in a regional climate model
The quantification of sea-ice production in the Laptev Sea polynyas is important for the Arctic sea-ice budget and the heat loss to the atmosphere. We estimated the ice production for the winter season 2007/2008 (November–April) based on simulations with the regional climate model COSMO-CLM at a hor...
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Copernicus Publications
2016
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00042921 2023-05-15T15:00:55+02:00 Quantification of ice production in Laptev Sea polynyas and its sensitivity to thin-ice parameterizations in a regional climate model Gutjahr, Oliver Heinemann, Günther Preußer, Andreas Willmes, Sascha Drüe, Clemens 2016-12 electronic https://doi.org/10.5194/tc-10-2999-2016 https://noa.gwlb.de/receive/cop_mods_00042921 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00042541/tc-10-2999-2016.pdf https://tc.copernicus.org/articles/10/2999/2016/tc-10-2999-2016.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-10-2999-2016 https://noa.gwlb.de/receive/cop_mods_00042921 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00042541/tc-10-2999-2016.pdf https://tc.copernicus.org/articles/10/2999/2016/tc-10-2999-2016.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2016 ftnonlinearchiv https://doi.org/10.5194/tc-10-2999-2016 2022-02-08T22:40:49Z The quantification of sea-ice production in the Laptev Sea polynyas is important for the Arctic sea-ice budget and the heat loss to the atmosphere. We estimated the ice production for the winter season 2007/2008 (November–April) based on simulations with the regional climate model COSMO-CLM at a horizontal resolution of 5 km and compared it to remote sensing estimates. A reference and five sensitivity simulations were performed with different assumptions on grid-scale and subgrid-scale ice thickness considered within polynyas, using a tile approach for fractional sea ice. In addition, the impact of heat loss on the atmospheric boundary layer was investigated. About 29.1 km3 of total winter ice production was estimated for the reference simulation, which varies by up to +124 % depending on the thin-ice assumptions. For the most realistic assumptions based on remote sensing of ice thickness the ice production increases by +39 %. The use of the tile approach enlarges the area and enhances the magnitude of the heat loss from polynyas up to +110 % if subgrid-scale open water is assumed and by +20 % for realistic assumptions. This enhanced heat loss causes in turn higher ice production rates and stronger impact on the atmospheric boundary layer structure over the polynyas. The study shows that ice production is highly sensitive to the thin-ice parameterizations for fractional sea-ice cover. In summary, realistic ice production estimates could be retrieved from our simulations. Neglecting subgrid-scale energy fluxes might considerably underestimate the ice production in coastal polynyas, such as in the Laptev Sea, with possible consequences on the Arctic sea-ice budget. Article in Journal/Newspaper Arctic laptev Laptev Sea Sea ice The Cryosphere Niedersächsisches Online-Archiv NOA Arctic Laptev Sea The Cryosphere 10 6 2999 3019 |
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Open Polar |
collection |
Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Gutjahr, Oliver Heinemann, Günther Preußer, Andreas Willmes, Sascha Drüe, Clemens Quantification of ice production in Laptev Sea polynyas and its sensitivity to thin-ice parameterizations in a regional climate model |
topic_facet |
article Verlagsveröffentlichung |
description |
The quantification of sea-ice production in the Laptev Sea polynyas is important for the Arctic sea-ice budget and the heat loss to the atmosphere. We estimated the ice production for the winter season 2007/2008 (November–April) based on simulations with the regional climate model COSMO-CLM at a horizontal resolution of 5 km and compared it to remote sensing estimates. A reference and five sensitivity simulations were performed with different assumptions on grid-scale and subgrid-scale ice thickness considered within polynyas, using a tile approach for fractional sea ice. In addition, the impact of heat loss on the atmospheric boundary layer was investigated. About 29.1 km3 of total winter ice production was estimated for the reference simulation, which varies by up to +124 % depending on the thin-ice assumptions. For the most realistic assumptions based on remote sensing of ice thickness the ice production increases by +39 %. The use of the tile approach enlarges the area and enhances the magnitude of the heat loss from polynyas up to +110 % if subgrid-scale open water is assumed and by +20 % for realistic assumptions. This enhanced heat loss causes in turn higher ice production rates and stronger impact on the atmospheric boundary layer structure over the polynyas. The study shows that ice production is highly sensitive to the thin-ice parameterizations for fractional sea-ice cover. In summary, realistic ice production estimates could be retrieved from our simulations. Neglecting subgrid-scale energy fluxes might considerably underestimate the ice production in coastal polynyas, such as in the Laptev Sea, with possible consequences on the Arctic sea-ice budget. |
format |
Article in Journal/Newspaper |
author |
Gutjahr, Oliver Heinemann, Günther Preußer, Andreas Willmes, Sascha Drüe, Clemens |
author_facet |
Gutjahr, Oliver Heinemann, Günther Preußer, Andreas Willmes, Sascha Drüe, Clemens |
author_sort |
Gutjahr, Oliver |
title |
Quantification of ice production in Laptev Sea polynyas and its sensitivity to thin-ice parameterizations in a regional climate model |
title_short |
Quantification of ice production in Laptev Sea polynyas and its sensitivity to thin-ice parameterizations in a regional climate model |
title_full |
Quantification of ice production in Laptev Sea polynyas and its sensitivity to thin-ice parameterizations in a regional climate model |
title_fullStr |
Quantification of ice production in Laptev Sea polynyas and its sensitivity to thin-ice parameterizations in a regional climate model |
title_full_unstemmed |
Quantification of ice production in Laptev Sea polynyas and its sensitivity to thin-ice parameterizations in a regional climate model |
title_sort |
quantification of ice production in laptev sea polynyas and its sensitivity to thin-ice parameterizations in a regional climate model |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/tc-10-2999-2016 https://noa.gwlb.de/receive/cop_mods_00042921 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00042541/tc-10-2999-2016.pdf https://tc.copernicus.org/articles/10/2999/2016/tc-10-2999-2016.pdf |
geographic |
Arctic Laptev Sea |
geographic_facet |
Arctic Laptev Sea |
genre |
Arctic laptev Laptev Sea Sea ice The Cryosphere |
genre_facet |
Arctic laptev Laptev Sea 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-10-2999-2016 https://noa.gwlb.de/receive/cop_mods_00042921 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00042541/tc-10-2999-2016.pdf https://tc.copernicus.org/articles/10/2999/2016/tc-10-2999-2016.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-10-2999-2016 |
container_title |
The Cryosphere |
container_volume |
10 |
container_issue |
6 |
container_start_page |
2999 |
op_container_end_page |
3019 |
_version_ |
1766332966085066752 |