The 1979–2005 Greenland ice sheet melt extent from passive microwave data using an improved version of the melt retrieval XPGR algorithm
peer reviewed Analysis of passive microwave satellite observations over the Greenland ice sheet reveals a significant increase in surface melt over the period 1979–2005. Since 1979, the total melt area was found to have increased by +1.22 × 107 km2. An improved version of the cross-polarized gradien...
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American Geophysical Union
2007
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Online Access: | https://orbi.uliege.be/handle/2268/16515 https://doi.org/10.1029/2006GL028787 |
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ftorbi:oai:orbi.ulg.ac.be:2268/16515 2024-04-21T08:02:55+00:00 The 1979–2005 Greenland ice sheet melt extent from passive microwave data using an improved version of the melt retrieval XPGR algorithm Fettweis, Xavier van Ypersele, Jean-Pascal Gallée, Hubert Lefebre, Filip Lefebvre, Wouter 2007-03-14 https://orbi.uliege.be/handle/2268/16515 https://doi.org/10.1029/2006GL028787 en eng American Geophysical Union http://www.agu.org/pubs/crossref/2007/2006GL028787.shtml urn:issn:0094-8276 urn:issn:1944-8007 https://orbi.uliege.be/handle/2268/16515 info:hdl:2268/16515 doi:10.1029/2006GL028787 scopus-id:2-s2.0-34249866537 restricted access http://purl.org/coar/access_right/c_16ec info:eu-repo/semantics/restrictedAccess Geophysical Research Letters (2007-03-14) Greenland melt microwave data Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique journal article http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article peer reviewed 2007 ftorbi https://doi.org/10.1029/2006GL028787 2024-03-27T14:55:55Z peer reviewed Analysis of passive microwave satellite observations over the Greenland ice sheet reveals a significant increase in surface melt over the period 1979–2005. Since 1979, the total melt area was found to have increased by +1.22 × 107 km2. An improved version of the cross-polarized gradient ratio (XPGR) technique is used to identify the melt from the brightness temperatures. The improvements in the melt retrieval XPGR algorithm as well as the surface melt acceleration are discussed with results from a coupled atmosphere-snow regional climate model. From 1979 to 2005, the ablation period has been increasing everywhere over the melt zone except in the regions where the model simulates an increased summer snowfall. Indeed, more snowfall in summer decreases the liquid water content of the snowpack, raises the albedo and therefore reduces the melt. Finally, the observed melt acceleration over the Greenland ice sheet is highly correlated with both Greenland and global warming suggesting a continuing surface melt increase in the future. Article in Journal/Newspaper Greenland Ice Sheet University of Liège: ORBi (Open Repository and Bibliography) Geophysical Research Letters 34 5 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Greenland melt microwave data Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
Greenland melt microwave data Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Fettweis, Xavier van Ypersele, Jean-Pascal Gallée, Hubert Lefebre, Filip Lefebvre, Wouter The 1979–2005 Greenland ice sheet melt extent from passive microwave data using an improved version of the melt retrieval XPGR algorithm |
topic_facet |
Greenland melt microwave data Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
description |
peer reviewed Analysis of passive microwave satellite observations over the Greenland ice sheet reveals a significant increase in surface melt over the period 1979–2005. Since 1979, the total melt area was found to have increased by +1.22 × 107 km2. An improved version of the cross-polarized gradient ratio (XPGR) technique is used to identify the melt from the brightness temperatures. The improvements in the melt retrieval XPGR algorithm as well as the surface melt acceleration are discussed with results from a coupled atmosphere-snow regional climate model. From 1979 to 2005, the ablation period has been increasing everywhere over the melt zone except in the regions where the model simulates an increased summer snowfall. Indeed, more snowfall in summer decreases the liquid water content of the snowpack, raises the albedo and therefore reduces the melt. Finally, the observed melt acceleration over the Greenland ice sheet is highly correlated with both Greenland and global warming suggesting a continuing surface melt increase in the future. |
format |
Article in Journal/Newspaper |
author |
Fettweis, Xavier van Ypersele, Jean-Pascal Gallée, Hubert Lefebre, Filip Lefebvre, Wouter |
author_facet |
Fettweis, Xavier van Ypersele, Jean-Pascal Gallée, Hubert Lefebre, Filip Lefebvre, Wouter |
author_sort |
Fettweis, Xavier |
title |
The 1979–2005 Greenland ice sheet melt extent from passive microwave data using an improved version of the melt retrieval XPGR algorithm |
title_short |
The 1979–2005 Greenland ice sheet melt extent from passive microwave data using an improved version of the melt retrieval XPGR algorithm |
title_full |
The 1979–2005 Greenland ice sheet melt extent from passive microwave data using an improved version of the melt retrieval XPGR algorithm |
title_fullStr |
The 1979–2005 Greenland ice sheet melt extent from passive microwave data using an improved version of the melt retrieval XPGR algorithm |
title_full_unstemmed |
The 1979–2005 Greenland ice sheet melt extent from passive microwave data using an improved version of the melt retrieval XPGR algorithm |
title_sort |
1979–2005 greenland ice sheet melt extent from passive microwave data using an improved version of the melt retrieval xpgr algorithm |
publisher |
American Geophysical Union |
publishDate |
2007 |
url |
https://orbi.uliege.be/handle/2268/16515 https://doi.org/10.1029/2006GL028787 |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_source |
Geophysical Research Letters (2007-03-14) |
op_relation |
http://www.agu.org/pubs/crossref/2007/2006GL028787.shtml urn:issn:0094-8276 urn:issn:1944-8007 https://orbi.uliege.be/handle/2268/16515 info:hdl:2268/16515 doi:10.1029/2006GL028787 scopus-id:2-s2.0-34249866537 |
op_rights |
restricted access http://purl.org/coar/access_right/c_16ec info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1029/2006GL028787 |
container_title |
Geophysical Research Letters |
container_volume |
34 |
container_issue |
5 |
_version_ |
1796942963107954688 |