On the importance to consider the cloud dependence in parameterizing the albedo of snow on sea ice
The impact of a revised snow surface albedo parameterization, which explicitly considers the cloud dependence of the snow albedo, is evaluated in simulations of a coupled regional climate model of the Arctic. The revised snow surface albedo parameterization leads to a more realistic simulation of th...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00065830 2023-06-11T04:03:10+02:00 On the importance to consider the cloud dependence in parameterizing the albedo of snow on sea ice Foth, Lara Dorn, Wolfgang Rinke, Annette Jäkel, Evelyn Niehaus, Hannah 2023-04 electronic https://doi.org/10.5194/egusphere-2023-634 https://noa.gwlb.de/receive/cop_mods_00065830 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00064340/egusphere-2023-634.pdf https://egusphere.copernicus.org/preprints/2023/egusphere-2023-634/egusphere-2023-634.pdf eng eng Copernicus Publications https://doi.org/10.5194/egusphere-2023-634 https://noa.gwlb.de/receive/cop_mods_00065830 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00064340/egusphere-2023-634.pdf https://egusphere.copernicus.org/preprints/2023/egusphere-2023-634/egusphere-2023-634.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2023 ftnonlinearchiv https://doi.org/10.5194/egusphere-2023-634 2023-04-23T23:20:00Z The impact of a revised snow surface albedo parameterization, which explicitly considers the cloud dependence of the snow albedo, is evaluated in simulations of a coupled regional climate model of the Arctic. The revised snow surface albedo parameterization leads to a more realistic simulation of the variability of the surface albedo during the snow melt period in late May and June. In particular, the reproduction of lower albedo values under cloud-free/broken-cloud conditions during the snow melt period represents a major improvement and results in an earlier disappearance of the snow cover and an earlier onset of sea-ice melt. In this way, the consideration of the cloud dependence of the snow albedo results in an amplification of the two-stage snow-albedo/ice-albedo feedback in the model. This finds expression in additional loss of sea-ice volume of more than 1000 km3 and additional reduction of summer sea-ice extent of around 250,000 km2 during one melting period, with accumulating magnitude of the overall changes in subsequent years. Article in Journal/Newspaper albedo Arctic Sea ice Niedersächsisches Online-Archiv NOA Arctic |
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Open Polar |
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Niedersächsisches Online-Archiv NOA |
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ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Foth, Lara Dorn, Wolfgang Rinke, Annette Jäkel, Evelyn Niehaus, Hannah On the importance to consider the cloud dependence in parameterizing the albedo of snow on sea ice |
topic_facet |
article Verlagsveröffentlichung |
description |
The impact of a revised snow surface albedo parameterization, which explicitly considers the cloud dependence of the snow albedo, is evaluated in simulations of a coupled regional climate model of the Arctic. The revised snow surface albedo parameterization leads to a more realistic simulation of the variability of the surface albedo during the snow melt period in late May and June. In particular, the reproduction of lower albedo values under cloud-free/broken-cloud conditions during the snow melt period represents a major improvement and results in an earlier disappearance of the snow cover and an earlier onset of sea-ice melt. In this way, the consideration of the cloud dependence of the snow albedo results in an amplification of the two-stage snow-albedo/ice-albedo feedback in the model. This finds expression in additional loss of sea-ice volume of more than 1000 km3 and additional reduction of summer sea-ice extent of around 250,000 km2 during one melting period, with accumulating magnitude of the overall changes in subsequent years. |
format |
Article in Journal/Newspaper |
author |
Foth, Lara Dorn, Wolfgang Rinke, Annette Jäkel, Evelyn Niehaus, Hannah |
author_facet |
Foth, Lara Dorn, Wolfgang Rinke, Annette Jäkel, Evelyn Niehaus, Hannah |
author_sort |
Foth, Lara |
title |
On the importance to consider the cloud dependence in parameterizing the albedo of snow on sea ice |
title_short |
On the importance to consider the cloud dependence in parameterizing the albedo of snow on sea ice |
title_full |
On the importance to consider the cloud dependence in parameterizing the albedo of snow on sea ice |
title_fullStr |
On the importance to consider the cloud dependence in parameterizing the albedo of snow on sea ice |
title_full_unstemmed |
On the importance to consider the cloud dependence in parameterizing the albedo of snow on sea ice |
title_sort |
on the importance to consider the cloud dependence in parameterizing the albedo of snow on sea ice |
publisher |
Copernicus Publications |
publishDate |
2023 |
url |
https://doi.org/10.5194/egusphere-2023-634 https://noa.gwlb.de/receive/cop_mods_00065830 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00064340/egusphere-2023-634.pdf https://egusphere.copernicus.org/preprints/2023/egusphere-2023-634/egusphere-2023-634.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
albedo Arctic Sea ice |
genre_facet |
albedo Arctic Sea ice |
op_relation |
https://doi.org/10.5194/egusphere-2023-634 https://noa.gwlb.de/receive/cop_mods_00065830 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00064340/egusphere-2023-634.pdf https://egusphere.copernicus.org/preprints/2023/egusphere-2023-634/egusphere-2023-634.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/egusphere-2023-634 |
_version_ |
1768377536006324224 |