Spatially heterogeneous effect of the climate warming on the Arctic land ice
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 su...
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ftcopernicus:oai:publications.copernicus.org:tcd109160 2023-05-15T14:30:58+02:00 Spatially heterogeneous effect of the climate warming on the Arctic land ice Maure, Damien Kittel, Christoph Lambin, Clara Delhasse, Alison Fettweis, Xavier 2023-03-28 application/pdf https://doi.org/10.5194/tc-2023-7 https://tc.copernicus.org/preprints/tc-2023-7/ eng eng doi:10.5194/tc-2023-7 https://tc.copernicus.org/preprints/tc-2023-7/ eISSN: 1994-0424 Text 2023 ftcopernicus https://doi.org/10.5194/tc-2023-7 2023-04-03T16:23:10Z 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. We here run the Regional Climate Model (RCM) Modèle Atmosphérique Régional (MAR) at a resolution of 6 km over 4 different domains covering all the Arctic grounded cryosphere to produce a unified Surface Mass Balance product from 1950 to 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 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 and Svalbard permanent ice areas, where melt rates have increased by only 9 % on average, illustrating a heterogeneity in the Arctic SMB response to global warming. Text arctic cryosphere Arctic Climate change Global warming Greenland Ice Sheet Svalbard Copernicus Publications: E-Journals Arctic Canada Greenland Svalbard |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
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English |
description |
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. We here run the Regional Climate Model (RCM) Modèle Atmosphérique Régional (MAR) at a resolution of 6 km over 4 different domains covering all the Arctic grounded cryosphere to produce a unified Surface Mass Balance product from 1950 to 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 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 and Svalbard permanent ice areas, where melt rates have increased by only 9 % on average, illustrating a heterogeneity in the Arctic SMB response to global warming. |
format |
Text |
author |
Maure, Damien Kittel, Christoph Lambin, Clara Delhasse, Alison Fettweis, Xavier |
spellingShingle |
Maure, Damien Kittel, Christoph Lambin, Clara Delhasse, Alison Fettweis, Xavier Spatially heterogeneous effect of the climate warming on the Arctic land ice |
author_facet |
Maure, Damien Kittel, Christoph Lambin, Clara Delhasse, Alison Fettweis, Xavier |
author_sort |
Maure, Damien |
title |
Spatially heterogeneous effect of the climate warming on the Arctic land ice |
title_short |
Spatially heterogeneous effect of the climate warming on the Arctic land ice |
title_full |
Spatially heterogeneous effect of the climate warming on the Arctic land ice |
title_fullStr |
Spatially heterogeneous effect of the climate warming on the Arctic land ice |
title_full_unstemmed |
Spatially heterogeneous effect of the climate warming on the Arctic land ice |
title_sort |
spatially heterogeneous effect of the climate warming on the arctic land ice |
publishDate |
2023 |
url |
https://doi.org/10.5194/tc-2023-7 https://tc.copernicus.org/preprints/tc-2023-7/ |
geographic |
Arctic Canada Greenland Svalbard |
geographic_facet |
Arctic Canada Greenland Svalbard |
genre |
arctic cryosphere Arctic Climate change Global warming Greenland Ice Sheet Svalbard |
genre_facet |
arctic cryosphere Arctic Climate change Global warming Greenland Ice Sheet Svalbard |
op_source |
eISSN: 1994-0424 |
op_relation |
doi:10.5194/tc-2023-7 https://tc.copernicus.org/preprints/tc-2023-7/ |
op_doi |
https://doi.org/10.5194/tc-2023-7 |
_version_ |
1766304724128104448 |