A statistical approach to represent small-scale variability of permafrost temperatures due to snow cover
In permafrost environments exposed to strong winds, drifting snow can create a small-scale pattern of strongly variable snow heights, which has profound implications for the thermal regime of the ground. Arrays of 26 to more than 100 temperature loggers were installed to record the distribution of g...
Published in: | The Cryosphere |
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Copernicus Publications
2014
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00018436 2023-05-15T17:55:43+02:00 A statistical approach to represent small-scale variability of permafrost temperatures due to snow cover Gisnås, K. Westermann, S. Schuler, T. V. Litherland, T. Isaksen, K. Boike, J. Etzelmüller, B. 2014-11 electronic https://doi.org/10.5194/tc-8-2063-2014 https://noa.gwlb.de/receive/cop_mods_00018436 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00018391/tc-8-2063-2014.pdf https://tc.copernicus.org/articles/8/2063/2014/tc-8-2063-2014.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-8-2063-2014 https://noa.gwlb.de/receive/cop_mods_00018436 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00018391/tc-8-2063-2014.pdf https://tc.copernicus.org/articles/8/2063/2014/tc-8-2063-2014.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2014 ftnonlinearchiv https://doi.org/10.5194/tc-8-2063-2014 2022-02-08T22:53:10Z In permafrost environments exposed to strong winds, drifting snow can create a small-scale pattern of strongly variable snow heights, which has profound implications for the thermal regime of the ground. Arrays of 26 to more than 100 temperature loggers were installed to record the distribution of ground surface temperatures within three study areas across a climatic gradient from continuous to sporadic permafrost in Norway. A variability of the mean annual ground surface temperature of up to 6°C was documented within areas of 0.5 km2. The observed variation can, to a large degree, be explained by variation in snow height. Permafrost models, employing averages of snow height for grid cells of, e.g., 1 km2, are not capable of representing such sub-grid variability. We propose a statistical representation of the sub-grid variability of ground surface temperatures and demonstrate that a simple equilibrium permafrost model can reproduce the temperature distribution within a grid cell based on the distribution of snow heights. Article in Journal/Newspaper permafrost The Cryosphere Niedersächsisches Online-Archiv NOA Norway The Cryosphere 8 6 2063 2074 |
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Open Polar |
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Niedersächsisches Online-Archiv NOA |
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ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Gisnås, K. Westermann, S. Schuler, T. V. Litherland, T. Isaksen, K. Boike, J. Etzelmüller, B. A statistical approach to represent small-scale variability of permafrost temperatures due to snow cover |
topic_facet |
article Verlagsveröffentlichung |
description |
In permafrost environments exposed to strong winds, drifting snow can create a small-scale pattern of strongly variable snow heights, which has profound implications for the thermal regime of the ground. Arrays of 26 to more than 100 temperature loggers were installed to record the distribution of ground surface temperatures within three study areas across a climatic gradient from continuous to sporadic permafrost in Norway. A variability of the mean annual ground surface temperature of up to 6°C was documented within areas of 0.5 km2. The observed variation can, to a large degree, be explained by variation in snow height. Permafrost models, employing averages of snow height for grid cells of, e.g., 1 km2, are not capable of representing such sub-grid variability. We propose a statistical representation of the sub-grid variability of ground surface temperatures and demonstrate that a simple equilibrium permafrost model can reproduce the temperature distribution within a grid cell based on the distribution of snow heights. |
format |
Article in Journal/Newspaper |
author |
Gisnås, K. Westermann, S. Schuler, T. V. Litherland, T. Isaksen, K. Boike, J. Etzelmüller, B. |
author_facet |
Gisnås, K. Westermann, S. Schuler, T. V. Litherland, T. Isaksen, K. Boike, J. Etzelmüller, B. |
author_sort |
Gisnås, K. |
title |
A statistical approach to represent small-scale variability of permafrost temperatures due to snow cover |
title_short |
A statistical approach to represent small-scale variability of permafrost temperatures due to snow cover |
title_full |
A statistical approach to represent small-scale variability of permafrost temperatures due to snow cover |
title_fullStr |
A statistical approach to represent small-scale variability of permafrost temperatures due to snow cover |
title_full_unstemmed |
A statistical approach to represent small-scale variability of permafrost temperatures due to snow cover |
title_sort |
statistical approach to represent small-scale variability of permafrost temperatures due to snow cover |
publisher |
Copernicus Publications |
publishDate |
2014 |
url |
https://doi.org/10.5194/tc-8-2063-2014 https://noa.gwlb.de/receive/cop_mods_00018436 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00018391/tc-8-2063-2014.pdf https://tc.copernicus.org/articles/8/2063/2014/tc-8-2063-2014.pdf |
geographic |
Norway |
geographic_facet |
Norway |
genre |
permafrost The Cryosphere |
genre_facet |
permafrost 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-8-2063-2014 https://noa.gwlb.de/receive/cop_mods_00018436 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00018391/tc-8-2063-2014.pdf https://tc.copernicus.org/articles/8/2063/2014/tc-8-2063-2014.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-8-2063-2014 |
container_title |
The Cryosphere |
container_volume |
8 |
container_issue |
6 |
container_start_page |
2063 |
op_container_end_page |
2074 |
_version_ |
1766163706593411072 |