Drifting snow climate of the Greenland ice sheet: a study with a regional climate model
This paper presents the drifting snow climate of the Greenland ice sheet, using output from a high-resolution (∼11 km) regional climate model. Because reliable direct observations of drifting snow do not exist, we evaluate the modeled near-surface climate instead, using automatic weather station (AW...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00024666 2023-05-15T16:27:51+02:00 Drifting snow climate of the Greenland ice sheet: a study with a regional climate model Lenaerts, J. T. M. van den Broeke, M. R. van Angelen, J. H. van Meijgaard, E. Déry, S. J. 2012-08 electronic https://doi.org/10.5194/tc-6-891-2012 https://noa.gwlb.de/receive/cop_mods_00024666 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00024621/tc-6-891-2012.pdf https://tc.copernicus.org/articles/6/891/2012/tc-6-891-2012.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-6-891-2012 https://noa.gwlb.de/receive/cop_mods_00024666 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00024621/tc-6-891-2012.pdf https://tc.copernicus.org/articles/6/891/2012/tc-6-891-2012.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2012 ftnonlinearchiv https://doi.org/10.5194/tc-6-891-2012 2022-02-08T22:50:04Z This paper presents the drifting snow climate of the Greenland ice sheet, using output from a high-resolution (∼11 km) regional climate model. Because reliable direct observations of drifting snow do not exist, we evaluate the modeled near-surface climate instead, using automatic weather station (AWS) observations from the K-transect and find that RACMO2 realistically simulates near-surface wind speed and relative humidity, two variables that are important for drifting snow. Integrated over the ice sheet, drifting snow sublimation (SUds) equals 24 ± 3 Gt yr−1, and is significantly larger than surface sublimation (SUs, 16 ± 2 Gt yr−1). SUds strongly varies between seasons, and is only important in winter, when surface sublimation and runoff are small. A rapid transition exists between the winter season, when snowfall and SUds are important, and the summer season, when snowmelt is significant, which increases surface snow density and thereby limits drifting snow processes. Drifting snow erosion (ERds) is only important on a regional scale. In recent decades, following decreasing wind speed and rising near-surface temperatures, SUds exhibits a negative trend (0.1 ± 0.1 Gt yr−1), which is compensated by an increase in SUs of similar magnitude. Article in Journal/Newspaper Greenland Ice Sheet The Cryosphere Niedersächsisches Online-Archiv NOA Greenland The Cryosphere 6 4 891 899 |
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Niedersächsisches Online-Archiv NOA |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Lenaerts, J. T. M. van den Broeke, M. R. van Angelen, J. H. van Meijgaard, E. Déry, S. J. Drifting snow climate of the Greenland ice sheet: a study with a regional climate model |
topic_facet |
article Verlagsveröffentlichung |
description |
This paper presents the drifting snow climate of the Greenland ice sheet, using output from a high-resolution (∼11 km) regional climate model. Because reliable direct observations of drifting snow do not exist, we evaluate the modeled near-surface climate instead, using automatic weather station (AWS) observations from the K-transect and find that RACMO2 realistically simulates near-surface wind speed and relative humidity, two variables that are important for drifting snow. Integrated over the ice sheet, drifting snow sublimation (SUds) equals 24 ± 3 Gt yr−1, and is significantly larger than surface sublimation (SUs, 16 ± 2 Gt yr−1). SUds strongly varies between seasons, and is only important in winter, when surface sublimation and runoff are small. A rapid transition exists between the winter season, when snowfall and SUds are important, and the summer season, when snowmelt is significant, which increases surface snow density and thereby limits drifting snow processes. Drifting snow erosion (ERds) is only important on a regional scale. In recent decades, following decreasing wind speed and rising near-surface temperatures, SUds exhibits a negative trend (0.1 ± 0.1 Gt yr−1), which is compensated by an increase in SUs of similar magnitude. |
format |
Article in Journal/Newspaper |
author |
Lenaerts, J. T. M. van den Broeke, M. R. van Angelen, J. H. van Meijgaard, E. Déry, S. J. |
author_facet |
Lenaerts, J. T. M. van den Broeke, M. R. van Angelen, J. H. van Meijgaard, E. Déry, S. J. |
author_sort |
Lenaerts, J. T. M. |
title |
Drifting snow climate of the Greenland ice sheet: a study with a regional climate model |
title_short |
Drifting snow climate of the Greenland ice sheet: a study with a regional climate model |
title_full |
Drifting snow climate of the Greenland ice sheet: a study with a regional climate model |
title_fullStr |
Drifting snow climate of the Greenland ice sheet: a study with a regional climate model |
title_full_unstemmed |
Drifting snow climate of the Greenland ice sheet: a study with a regional climate model |
title_sort |
drifting snow climate of the greenland ice sheet: a study with a regional climate model |
publisher |
Copernicus Publications |
publishDate |
2012 |
url |
https://doi.org/10.5194/tc-6-891-2012 https://noa.gwlb.de/receive/cop_mods_00024666 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00024621/tc-6-891-2012.pdf https://tc.copernicus.org/articles/6/891/2012/tc-6-891-2012.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet The Cryosphere |
genre_facet |
Greenland Ice Sheet 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-6-891-2012 https://noa.gwlb.de/receive/cop_mods_00024666 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00024621/tc-6-891-2012.pdf https://tc.copernicus.org/articles/6/891/2012/tc-6-891-2012.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-6-891-2012 |
container_title |
The Cryosphere |
container_volume |
6 |
container_issue |
4 |
container_start_page |
891 |
op_container_end_page |
899 |
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1766017411119579136 |