Evidence and analysis of 2012 Greenland records from spaceborne observations, a regional climate model and reanalysis data
peer reviewed A combined analysis of remote sensing observations, regional climate model (RCM) outputs and reanalysis data over the Greenland ice sheet provides evidence that multiple records were set during summer 2012. Melt extent was the largest in the satellite era (extending up to ∼97% of the i...
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Online Access: | https://orbi.uliege.be/handle/2268/135703 https://orbi.uliege.be/bitstream/2268/135703/1/tc-7-615-2013.pdf https://doi.org/10.5194/tc-7-615-2013 |
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ftorbi:oai:orbi.ulg.ac.be:2268/135703 2024-04-21T08:03:21+00:00 Evidence and analysis of 2012 Greenland records from spaceborne observations, a regional climate model and reanalysis data Tedesco, M. Fettweis, Xavier Mote, T. Wahr, J. Alexander, P. Box, J. Wouters, B. 2013-04-04 https://orbi.uliege.be/handle/2268/135703 https://orbi.uliege.be/bitstream/2268/135703/1/tc-7-615-2013.pdf https://doi.org/10.5194/tc-7-615-2013 en eng Copernicus http://www.the-cryosphere.net/7/615/2013/tc-7-615-2013.html urn:issn:1994-0416 urn:issn:1994-0424 https://orbi.uliege.be/handle/2268/135703 info:hdl:2268/135703 https://orbi.uliege.be/bitstream/2268/135703/1/tc-7-615-2013.pdf doi:10.5194/tc-7-615-2013 scopus-id:2-s2.0-84879528945 open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess The Cryosphere, 7, 615-630 (2013-04-04) 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 2013 ftorbi https://doi.org/10.5194/tc-7-615-2013 2024-03-27T14:58:15Z peer reviewed A combined analysis of remote sensing observations, regional climate model (RCM) outputs and reanalysis data over the Greenland ice sheet provides evidence that multiple records were set during summer 2012. Melt extent was the largest in the satellite era (extending up to ∼97% of the ice sheet) and melting lasted up to ∼2 months longer than the 1979–2011 mean. Model results indicate that near surface temperature was ∼3 standard deviations (σ) above the 1958–2011 mean, while surface mass balance (SMB) was ∼3σ below the mean and runoff was 3.9σ above the mean over the same period. Albedo, exposure of bare ice and surface mass balance also set new records, as did the total mass balance with summer and annual mass changes of, respectively, −627 Gt and −574 Gt, 2σ below the 2003–2012 mean. We identify persistent anticyclonic conditions over Greenland associated with anomalies in the North Atlantic Oscillation (NAO), changes in surface conditions (e.g., albedo, surface temperature) and preconditioning of surface properties from recent extreme melting as major driving mechanisms for the 2012 records. Less positive if not increasingly negative SMB will likely occur should these characteristics persist. Article in Journal/Newspaper Greenland Ice Sheet North Atlantic North Atlantic oscillation The Cryosphere University of Liège: ORBi (Open Repository and Bibliography) The Cryosphere 7 2 615 630 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Tedesco, M. Fettweis, Xavier Mote, T. Wahr, J. Alexander, P. Box, J. Wouters, B. Evidence and analysis of 2012 Greenland records from spaceborne observations, a regional climate model and reanalysis data |
topic_facet |
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 A combined analysis of remote sensing observations, regional climate model (RCM) outputs and reanalysis data over the Greenland ice sheet provides evidence that multiple records were set during summer 2012. Melt extent was the largest in the satellite era (extending up to ∼97% of the ice sheet) and melting lasted up to ∼2 months longer than the 1979–2011 mean. Model results indicate that near surface temperature was ∼3 standard deviations (σ) above the 1958–2011 mean, while surface mass balance (SMB) was ∼3σ below the mean and runoff was 3.9σ above the mean over the same period. Albedo, exposure of bare ice and surface mass balance also set new records, as did the total mass balance with summer and annual mass changes of, respectively, −627 Gt and −574 Gt, 2σ below the 2003–2012 mean. We identify persistent anticyclonic conditions over Greenland associated with anomalies in the North Atlantic Oscillation (NAO), changes in surface conditions (e.g., albedo, surface temperature) and preconditioning of surface properties from recent extreme melting as major driving mechanisms for the 2012 records. Less positive if not increasingly negative SMB will likely occur should these characteristics persist. |
format |
Article in Journal/Newspaper |
author |
Tedesco, M. Fettweis, Xavier Mote, T. Wahr, J. Alexander, P. Box, J. Wouters, B. |
author_facet |
Tedesco, M. Fettweis, Xavier Mote, T. Wahr, J. Alexander, P. Box, J. Wouters, B. |
author_sort |
Tedesco, M. |
title |
Evidence and analysis of 2012 Greenland records from spaceborne observations, a regional climate model and reanalysis data |
title_short |
Evidence and analysis of 2012 Greenland records from spaceborne observations, a regional climate model and reanalysis data |
title_full |
Evidence and analysis of 2012 Greenland records from spaceborne observations, a regional climate model and reanalysis data |
title_fullStr |
Evidence and analysis of 2012 Greenland records from spaceborne observations, a regional climate model and reanalysis data |
title_full_unstemmed |
Evidence and analysis of 2012 Greenland records from spaceborne observations, a regional climate model and reanalysis data |
title_sort |
evidence and analysis of 2012 greenland records from spaceborne observations, a regional climate model and reanalysis data |
publisher |
Copernicus |
publishDate |
2013 |
url |
https://orbi.uliege.be/handle/2268/135703 https://orbi.uliege.be/bitstream/2268/135703/1/tc-7-615-2013.pdf https://doi.org/10.5194/tc-7-615-2013 |
genre |
Greenland Ice Sheet North Atlantic North Atlantic oscillation The Cryosphere |
genre_facet |
Greenland Ice Sheet North Atlantic North Atlantic oscillation The Cryosphere |
op_source |
The Cryosphere, 7, 615-630 (2013-04-04) |
op_relation |
http://www.the-cryosphere.net/7/615/2013/tc-7-615-2013.html urn:issn:1994-0416 urn:issn:1994-0424 https://orbi.uliege.be/handle/2268/135703 info:hdl:2268/135703 https://orbi.uliege.be/bitstream/2268/135703/1/tc-7-615-2013.pdf doi:10.5194/tc-7-615-2013 scopus-id:2-s2.0-84879528945 |
op_rights |
open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-7-615-2013 |
container_title |
The Cryosphere |
container_volume |
7 |
container_issue |
2 |
container_start_page |
615 |
op_container_end_page |
630 |
_version_ |
1796943235710451712 |