Sunlight, clouds, sea ice, albedo, and the radiative budget: the umbrella versus the blanket
The surface radiation budget of the Arctic Ocean plays a central role in summer ice melt and is governed by clouds and surface albedo. I calculated the net radiation flux for a range of albedos under sunny and cloudy skies and determined the break-even value, where the net radiation is the same for...
Published in: | The Cryosphere |
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Copernicus Publications
2018
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00005434 2023-05-15T13:11:10+02:00 Sunlight, clouds, sea ice, albedo, and the radiative budget: the umbrella versus the blanket Perovich, Donald K. 2018-06 electronic https://doi.org/10.5194/tc-12-2159-2018 https://noa.gwlb.de/receive/cop_mods_00005434 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00005391/tc-12-2159-2018.pdf https://tc.copernicus.org/articles/12/2159/2018/tc-12-2159-2018.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-12-2159-2018 https://noa.gwlb.de/receive/cop_mods_00005434 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00005391/tc-12-2159-2018.pdf https://tc.copernicus.org/articles/12/2159/2018/tc-12-2159-2018.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2018 ftnonlinearchiv https://doi.org/10.5194/tc-12-2159-2018 2022-02-08T22:59:33Z The surface radiation budget of the Arctic Ocean plays a central role in summer ice melt and is governed by clouds and surface albedo. I calculated the net radiation flux for a range of albedos under sunny and cloudy skies and determined the break-even value, where the net radiation is the same for cloudy and sunny skies. Break-even albedos range from 0.30 in September to 0.58 in July. For snow-covered or bare ice, sunny skies always result in less radiative heat input. In contrast, leads always have, and ponds usually have, more radiative input under sunny skies than cloudy skies. Snow-covered ice has a net radiation flux that is negative or near zero under sunny skies, resulting in radiative cooling. Areally averaged albedos for sea ice in July result in a smaller net radiation flux under cloudy skies. For May, June, August, and September, the net radiation is smaller under sunny skies. Article in Journal/Newspaper albedo Arctic Arctic Ocean Sea ice The Cryosphere Niedersächsisches Online-Archiv NOA Arctic Arctic Ocean The Cryosphere 12 6 2159 2165 |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Perovich, Donald K. Sunlight, clouds, sea ice, albedo, and the radiative budget: the umbrella versus the blanket |
topic_facet |
article Verlagsveröffentlichung |
description |
The surface radiation budget of the Arctic Ocean plays a central role in summer ice melt and is governed by clouds and surface albedo. I calculated the net radiation flux for a range of albedos under sunny and cloudy skies and determined the break-even value, where the net radiation is the same for cloudy and sunny skies. Break-even albedos range from 0.30 in September to 0.58 in July. For snow-covered or bare ice, sunny skies always result in less radiative heat input. In contrast, leads always have, and ponds usually have, more radiative input under sunny skies than cloudy skies. Snow-covered ice has a net radiation flux that is negative or near zero under sunny skies, resulting in radiative cooling. Areally averaged albedos for sea ice in July result in a smaller net radiation flux under cloudy skies. For May, June, August, and September, the net radiation is smaller under sunny skies. |
format |
Article in Journal/Newspaper |
author |
Perovich, Donald K. |
author_facet |
Perovich, Donald K. |
author_sort |
Perovich, Donald K. |
title |
Sunlight, clouds, sea ice, albedo, and the radiative budget: the umbrella versus the blanket |
title_short |
Sunlight, clouds, sea ice, albedo, and the radiative budget: the umbrella versus the blanket |
title_full |
Sunlight, clouds, sea ice, albedo, and the radiative budget: the umbrella versus the blanket |
title_fullStr |
Sunlight, clouds, sea ice, albedo, and the radiative budget: the umbrella versus the blanket |
title_full_unstemmed |
Sunlight, clouds, sea ice, albedo, and the radiative budget: the umbrella versus the blanket |
title_sort |
sunlight, clouds, sea ice, albedo, and the radiative budget: the umbrella versus the blanket |
publisher |
Copernicus Publications |
publishDate |
2018 |
url |
https://doi.org/10.5194/tc-12-2159-2018 https://noa.gwlb.de/receive/cop_mods_00005434 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00005391/tc-12-2159-2018.pdf https://tc.copernicus.org/articles/12/2159/2018/tc-12-2159-2018.pdf |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
albedo Arctic Arctic Ocean Sea ice The Cryosphere |
genre_facet |
albedo Arctic Arctic Ocean 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-12-2159-2018 https://noa.gwlb.de/receive/cop_mods_00005434 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00005391/tc-12-2159-2018.pdf https://tc.copernicus.org/articles/12/2159/2018/tc-12-2159-2018.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-12-2159-2018 |
container_title |
The Cryosphere |
container_volume |
12 |
container_issue |
6 |
container_start_page |
2159 |
op_container_end_page |
2165 |
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1766246207062016000 |