Article (Scientific journals)
Spatially heterogeneous effect of climate warming on the Arctic land ice
Maure, Damien; Kittel, Christoph; Lambin, Clara et al.
2023In The Cryosphere, 17 (11), p. 4645-4659
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Keywords :
Earth-Surface Processes; Water Science and Technology
Abstract :
[en] Abstract. Global warming has already substantially altered the Arctic cryosphere. Due to the Arctic warming amplification, the temperature is increasing more strongly, leading to pervasive changes in this area. Recent years were notably marked by melt records over the Greenland Ice Sheet, while other regions such as Svalbard seem to remain less influenced. This raises the question of the current state of the Greenland Ice Sheet and the various ice caps in the Arctic for which few studies are available. Here, we run the regional climate model (RCM) Modèle Atmosphérique Régional (MAR) at a resolution of 6 km over four different domains covering all Arctic land ice to produce a unified surface mass balance product from 1950 to the present day. We also compare our results to large-scale indices to better understand the heterogeneity of the evolutions across the Arctic and their links to recent climate change. We find a sharp decrease of surface mass balance (SMB) over the western Arctic (Canada and Greenland) in relationship with the atmospheric blocking situations that have become more frequent in summer, resulting in a 41 % increase of the melt rate since 1950. This increase is not seen over the Russian Arctic permanent ice areas, where melt rates have increased by only 3 % on average, illustrating a heterogeneity in the Arctic SMB response to global warming.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Maure, Damien ;  Université de Liège - ULiège > Sphères
Kittel, Christoph  ;  Université de Liège - ULiège > Département de géographie > Climatologie et Topoclimatologie
Lambin, Clara ;  Université de Liège - ULiège > Département de géographie > Climatologie et Topoclimatologie
Delhasse, Alison  ;  Université de Liège - ULiège > Département de géographie > Climatologie et Topoclimatologie
Fettweis, Xavier  ;  Université de Liège - ULiège > Département de géographie > Climatologie et Topoclimatologie
Language :
English
Title :
Spatially heterogeneous effect of climate warming on the Arctic land ice
Publication date :
06 November 2023
Journal title :
The Cryosphere
ISSN :
1994-0416
eISSN :
1994-0424
Publisher :
Copernicus GmbH
Volume :
17
Issue :
11
Pages :
4645-4659
Peer reviewed :
Peer Reviewed verified by ORBi
Tags :
CÉCI : Consortium des Équipements de Calcul Intensif
Tier-1 supercomputer
European Projects :
H2020 - 101003590 - PolarRES - Polar Regions in the Earth System
Funders :
EU - European Union [BE]
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Available on ORBi :
since 08 November 2023

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