Current and future atmospheric circulation at 500 hPa over Greenland simulated by the CMIP3 and CMIP5 global models
peer reviewed The Greenland ice sheet is projected to be strongly affected by global warming. These projections are either issued from downscaling methods (such as Regional Climate Models) or they come directly from General Circulation Models (GCMs). In this context, it is necessary to evaluate the...
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ftorbi:oai:orbi.ulg.ac.be:2268/131762 2024-04-21T08:02:57+00:00 Current and future atmospheric circulation at 500 hPa over Greenland simulated by the CMIP3 and CMIP5 global models Belleflamme, Alexandre Fettweis, Xavier Lang, Charlotte Erpicum, Michel 2013 https://orbi.uliege.be/handle/2268/131762 https://orbi.uliege.be/bitstream/2268/131762/1/Belleflamme_et_al_accepted_version.pdf https://doi.org/10.1007/s00382-012-1538-2 en eng Springer http://www.springerlink.com/content/m765331048634740/ urn:issn:0930-7575 urn:issn:1432-0894 https://orbi.uliege.be/handle/2268/131762 info:hdl:2268/131762 https://orbi.uliege.be/bitstream/2268/131762/1/Belleflamme_et_al_accepted_version.pdf doi:10.1007/s00382-012-1538-2 scopus-id:2-s2.0-84884699598 open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess Climate Dynamics, 41 (7-8) (2013) General circulation models 500 hPa geopotential height Greenland Circulation type classification 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/10.1007/s00382-012-1538-2 2024-03-27T14:58:20Z peer reviewed The Greenland ice sheet is projected to be strongly affected by global warming. These projections are either issued from downscaling methods (such as Regional Climate Models) or they come directly from General Circulation Models (GCMs). In this context, it is necessary to evaluate the accuracy of the daily atmospheric circulation simulated by the GCMs, since it is used as forcing for downscaling methods. Thus, we use an automatic circulation type classification based on two indices (Euclidean distance and Spearman rank correlation using the daily 500 hPa geopotential height) to evaluate the ability of the GCMs from both CMIP3 and CMIP5 databases to simulate the main circulation types over Greenland during summer. For each circulation type, the GCMs are compared to three reanalysis datasets on the basis of their frequency and persistence differences. For the current climate (1961–1990), we show that most of the GCMs do not reproduce the expected frequency and the persistence of the circulation types and that they simulate poorly the observed daily variability of the general circulation. Only a few GCMs can be used as reliable forcings for downscaling methods over Greenland. Finally, when applying the same approach to the future projections of the GCMs, no significant change in the atmospheric circulation over Greenland is detected, besides a generalised increase of the geopotential height due to a uniform warming of the atmosphere. Article in Journal/Newspaper Greenland Ice Sheet University of Liège: ORBi (Open Repository and Bibliography) Climate Dynamics 41 7-8 2061 2080 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
General circulation models 500 hPa geopotential height Greenland Circulation type classification Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
General circulation models 500 hPa geopotential height Greenland Circulation type classification Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Belleflamme, Alexandre Fettweis, Xavier Lang, Charlotte Erpicum, Michel Current and future atmospheric circulation at 500 hPa over Greenland simulated by the CMIP3 and CMIP5 global models |
topic_facet |
General circulation models 500 hPa geopotential height Greenland Circulation type classification 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 The Greenland ice sheet is projected to be strongly affected by global warming. These projections are either issued from downscaling methods (such as Regional Climate Models) or they come directly from General Circulation Models (GCMs). In this context, it is necessary to evaluate the accuracy of the daily atmospheric circulation simulated by the GCMs, since it is used as forcing for downscaling methods. Thus, we use an automatic circulation type classification based on two indices (Euclidean distance and Spearman rank correlation using the daily 500 hPa geopotential height) to evaluate the ability of the GCMs from both CMIP3 and CMIP5 databases to simulate the main circulation types over Greenland during summer. For each circulation type, the GCMs are compared to three reanalysis datasets on the basis of their frequency and persistence differences. For the current climate (1961–1990), we show that most of the GCMs do not reproduce the expected frequency and the persistence of the circulation types and that they simulate poorly the observed daily variability of the general circulation. Only a few GCMs can be used as reliable forcings for downscaling methods over Greenland. Finally, when applying the same approach to the future projections of the GCMs, no significant change in the atmospheric circulation over Greenland is detected, besides a generalised increase of the geopotential height due to a uniform warming of the atmosphere. |
format |
Article in Journal/Newspaper |
author |
Belleflamme, Alexandre Fettweis, Xavier Lang, Charlotte Erpicum, Michel |
author_facet |
Belleflamme, Alexandre Fettweis, Xavier Lang, Charlotte Erpicum, Michel |
author_sort |
Belleflamme, Alexandre |
title |
Current and future atmospheric circulation at 500 hPa over Greenland simulated by the CMIP3 and CMIP5 global models |
title_short |
Current and future atmospheric circulation at 500 hPa over Greenland simulated by the CMIP3 and CMIP5 global models |
title_full |
Current and future atmospheric circulation at 500 hPa over Greenland simulated by the CMIP3 and CMIP5 global models |
title_fullStr |
Current and future atmospheric circulation at 500 hPa over Greenland simulated by the CMIP3 and CMIP5 global models |
title_full_unstemmed |
Current and future atmospheric circulation at 500 hPa over Greenland simulated by the CMIP3 and CMIP5 global models |
title_sort |
current and future atmospheric circulation at 500 hpa over greenland simulated by the cmip3 and cmip5 global models |
publisher |
Springer |
publishDate |
2013 |
url |
https://orbi.uliege.be/handle/2268/131762 https://orbi.uliege.be/bitstream/2268/131762/1/Belleflamme_et_al_accepted_version.pdf https://doi.org/10.1007/s00382-012-1538-2 |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_source |
Climate Dynamics, 41 (7-8) (2013) |
op_relation |
http://www.springerlink.com/content/m765331048634740/ urn:issn:0930-7575 urn:issn:1432-0894 https://orbi.uliege.be/handle/2268/131762 info:hdl:2268/131762 https://orbi.uliege.be/bitstream/2268/131762/1/Belleflamme_et_al_accepted_version.pdf doi:10.1007/s00382-012-1538-2 scopus-id:2-s2.0-84884699598 |
op_rights |
open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1007/s00382-012-1538-2 |
container_title |
Climate Dynamics |
container_volume |
41 |
container_issue |
7-8 |
container_start_page |
2061 |
op_container_end_page |
2080 |
_version_ |
1796942989400997888 |