North-Atlantic dynamics and European temperature extremes in the IPSL model: Sensitivity to atmospheric resolution
The variability of the European climate is mostly controlled by the unstable nature of the North-Atlantic dynamics, especially in wintertime. The intra-seasonal to inter-annual fluctuations of atmospheric circulations has often been described as the alternation between a limited number of preferenti...
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ftunivrosario:oai:repository.urosario.edu.co:10336/25897 2023-05-15T17:29:42+02:00 North-Atlantic dynamics and European temperature extremes in the IPSL model: Sensitivity to atmospheric resolution Dinámica del Atlántico Norte y temperaturas extremas europeas en el modelo IPSL: sensibilidad a la resolución atmosférica Cattiaux,Julien Quesada,Benjamin Arakélian,Ara Cordon, Francis Vautard,Robert Yiou,Pascal 2012-09-27 application/pdf https://repository.urosario.edu.co/handle/10336/25897 https://doi.org/10.1007/s00382-012-1529-3 eng eng Springer Nature ISSN: 0930-7575 EISSN: 1432-0894 https://repository.urosario.edu.co/handle/10336/25897 https://doi.org/10.1007/s00382-012-1529-3 info:eu-repo/semantics/restrictedAccess instname:Universidad del Rosario European climate inter-annual fluctuations atmospheric circulations info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2012 ftunivrosario https://doi.org/10.1007/s00382-012-1529-3 2022-08-01T07:02:04Z The variability of the European climate is mostly controlled by the unstable nature of the North-Atlantic dynamics, especially in wintertime. The intra-seasonal to inter-annual fluctuations of atmospheric circulations has often been described as the alternation between a limited number of preferential weather regimes. Such discrete description can be justified by the multi-modality of the latitudinal position of the jet stream. In addition, seasonal extremes in European temperatures are generally associated with an exceptional persistence into one weather regime. Here we investigate the skill of the IPSL model to both simulate North-Atlantic weather regimes and European temperature extremes, including summer heat waves and winter cold spells. We use a set of eight IPSL experiments, with six different horizontal resolutions and the two versions used in CMIP3 and CMIP5. We find that despite a substantial deficit in the simulated poleward peak of the jet stream, the IPSL model represents weather regimes fairly well. A significant improvement is found for all horizontal resolutions higher than the one used in CMIP3, while the increase in vertical resolution included in the CMIP5 version tends to improve the wintertime dynamics. In addition to a recurrent cold bias over Europe, the IPSL model generally overestimates (underestimates) the indices of winter cold spells (summer heat waves) such as frequencies or durations. We find that the increase in horizontal resolution almost always improves these statistics, while the influence of vertical resolution is less clear. Overall, the CMIP5 version of the IPSL model appears to carry promising improvements in the simulation of the European climate variability. Article in Journal/Newspaper North Atlantic Universidad del Rosario, Bogotá: E-docUR Climate Dynamics 40 9-10 2293 2310 |
institution |
Open Polar |
collection |
Universidad del Rosario, Bogotá: E-docUR |
op_collection_id |
ftunivrosario |
language |
English |
topic |
European climate inter-annual fluctuations atmospheric circulations |
spellingShingle |
European climate inter-annual fluctuations atmospheric circulations Cattiaux,Julien Quesada,Benjamin Arakélian,Ara Cordon, Francis Vautard,Robert Yiou,Pascal North-Atlantic dynamics and European temperature extremes in the IPSL model: Sensitivity to atmospheric resolution |
topic_facet |
European climate inter-annual fluctuations atmospheric circulations |
description |
The variability of the European climate is mostly controlled by the unstable nature of the North-Atlantic dynamics, especially in wintertime. The intra-seasonal to inter-annual fluctuations of atmospheric circulations has often been described as the alternation between a limited number of preferential weather regimes. Such discrete description can be justified by the multi-modality of the latitudinal position of the jet stream. In addition, seasonal extremes in European temperatures are generally associated with an exceptional persistence into one weather regime. Here we investigate the skill of the IPSL model to both simulate North-Atlantic weather regimes and European temperature extremes, including summer heat waves and winter cold spells. We use a set of eight IPSL experiments, with six different horizontal resolutions and the two versions used in CMIP3 and CMIP5. We find that despite a substantial deficit in the simulated poleward peak of the jet stream, the IPSL model represents weather regimes fairly well. A significant improvement is found for all horizontal resolutions higher than the one used in CMIP3, while the increase in vertical resolution included in the CMIP5 version tends to improve the wintertime dynamics. In addition to a recurrent cold bias over Europe, the IPSL model generally overestimates (underestimates) the indices of winter cold spells (summer heat waves) such as frequencies or durations. We find that the increase in horizontal resolution almost always improves these statistics, while the influence of vertical resolution is less clear. Overall, the CMIP5 version of the IPSL model appears to carry promising improvements in the simulation of the European climate variability. |
format |
Article in Journal/Newspaper |
author |
Cattiaux,Julien Quesada,Benjamin Arakélian,Ara Cordon, Francis Vautard,Robert Yiou,Pascal |
author_facet |
Cattiaux,Julien Quesada,Benjamin Arakélian,Ara Cordon, Francis Vautard,Robert Yiou,Pascal |
author_sort |
Cattiaux,Julien |
title |
North-Atlantic dynamics and European temperature extremes in the IPSL model: Sensitivity to atmospheric resolution |
title_short |
North-Atlantic dynamics and European temperature extremes in the IPSL model: Sensitivity to atmospheric resolution |
title_full |
North-Atlantic dynamics and European temperature extremes in the IPSL model: Sensitivity to atmospheric resolution |
title_fullStr |
North-Atlantic dynamics and European temperature extremes in the IPSL model: Sensitivity to atmospheric resolution |
title_full_unstemmed |
North-Atlantic dynamics and European temperature extremes in the IPSL model: Sensitivity to atmospheric resolution |
title_sort |
north-atlantic dynamics and european temperature extremes in the ipsl model: sensitivity to atmospheric resolution |
publisher |
Springer Nature |
publishDate |
2012 |
url |
https://repository.urosario.edu.co/handle/10336/25897 https://doi.org/10.1007/s00382-012-1529-3 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
instname:Universidad del Rosario |
op_relation |
ISSN: 0930-7575 EISSN: 1432-0894 https://repository.urosario.edu.co/handle/10336/25897 https://doi.org/10.1007/s00382-012-1529-3 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1007/s00382-012-1529-3 |
container_title |
Climate Dynamics |
container_volume |
40 |
container_issue |
9-10 |
container_start_page |
2293 |
op_container_end_page |
2310 |
_version_ |
1766124485670338560 |