European marginal seas in a regional atmosphere-ocean coupled model and their impact on Vb-cyclones and associated precipitation
International audience Vb-cyclones are extratropical cyclones propagating from the Western Mediterranean Sea and traveling across the Eastern Alps into the Baltic region. With these cyclones, extreme precipitation over Central Europe potentially triggers significant flood events. Understanding the p...
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ftunivnantes:oai:HAL:insu-03727014v1 2023-05-15T17:24:23+02:00 European marginal seas in a regional atmosphere-ocean coupled model and their impact on Vb-cyclones and associated precipitation Akhtar, Naveed Krug, Amelie Brauch, Jennifer Arsouze, Thomas Dieterich, Christian Ahrens, Bodo Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL) 2019 https://hal-insu.archives-ouvertes.fr/insu-03727014 https://doi.org/10.1007/s00382-019-04906-x en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s00382-019-04906-x insu-03727014 https://hal-insu.archives-ouvertes.fr/insu-03727014 BIBCODE: 2019ClDy.53.5967A doi:10.1007/s00382-019-04906-x ISSN: 0930-7575 EISSN: 1432-0894 Climate Dynamics https://hal-insu.archives-ouvertes.fr/insu-03727014 Climate Dynamics, Springer Verlag, 2019, 53, pp.5967-5984. ⟨10.1007/s00382-019-04906-x⟩ Mediterranean Sea North and Baltic Seas Ocean coupling Vb-cyclones [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2019 ftunivnantes https://doi.org/10.1007/s00382-019-04906-x 2022-10-04T23:16:48Z International audience Vb-cyclones are extratropical cyclones propagating from the Western Mediterranean Sea and traveling across the Eastern Alps into the Baltic region. With these cyclones, extreme precipitation over Central Europe potentially triggers significant flood events. Understanding the prediction ability of Vb-cyclones would lower risks from adverse impacts. This study analyzes the robustness of an atmosphere-ocean regional coupled model, including interactive models for the Mediterranean Sea (MED) and North and Baltic Seas (NORDIC) in reproducing observed Vb-cyclone characteristics. We use the regional climate model (RCM) COSMO-CLM (CCLM) in stand-alone and coupled with the ocean model NEMO configurations for the EURO-CORDEX domain from 1979 to 2014, driven by the ERA-Interim reanalysis. Sea surface temperature (SST) is evaluated to demonstrate the stability and reliability of the coupled configurations. Compared to observations, simulated SSTs show biases ( 1 °C), especially during winter and summer. Generally, all model configurations are able to replicate Vb-cyclones, their trajectories, and associated precipitation fields. Cyclone trajectories are comparably well simulated with the coupled models, as with the stand-alone simulation which is driven by the reanalysis SST in the MED and NORDIC seas. The cyclone intensity shows large deviations from reanalysis reference in the simulations with the interactive MED Sea, and smallest with CCLM. Precipitation characteristics are similarly simulated in the coupled and stand-alone (with reanalysis SST) simulations. The results suggest that our coupled RCM is useful for studying the impacts of highly resolved and interactively simulated SSTs on European extreme events and regional climate, a crucial prerequisite for understanding future climate conditions. Article in Journal/Newspaper Nordic Seas Université de Nantes: HAL-UNIV-NANTES Climate Dynamics 53 9-10 5967 5984 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
Mediterranean Sea North and Baltic Seas Ocean coupling Vb-cyclones [SDU]Sciences of the Universe [physics] |
spellingShingle |
Mediterranean Sea North and Baltic Seas Ocean coupling Vb-cyclones [SDU]Sciences of the Universe [physics] Akhtar, Naveed Krug, Amelie Brauch, Jennifer Arsouze, Thomas Dieterich, Christian Ahrens, Bodo European marginal seas in a regional atmosphere-ocean coupled model and their impact on Vb-cyclones and associated precipitation |
topic_facet |
Mediterranean Sea North and Baltic Seas Ocean coupling Vb-cyclones [SDU]Sciences of the Universe [physics] |
description |
International audience Vb-cyclones are extratropical cyclones propagating from the Western Mediterranean Sea and traveling across the Eastern Alps into the Baltic region. With these cyclones, extreme precipitation over Central Europe potentially triggers significant flood events. Understanding the prediction ability of Vb-cyclones would lower risks from adverse impacts. This study analyzes the robustness of an atmosphere-ocean regional coupled model, including interactive models for the Mediterranean Sea (MED) and North and Baltic Seas (NORDIC) in reproducing observed Vb-cyclone characteristics. We use the regional climate model (RCM) COSMO-CLM (CCLM) in stand-alone and coupled with the ocean model NEMO configurations for the EURO-CORDEX domain from 1979 to 2014, driven by the ERA-Interim reanalysis. Sea surface temperature (SST) is evaluated to demonstrate the stability and reliability of the coupled configurations. Compared to observations, simulated SSTs show biases ( 1 °C), especially during winter and summer. Generally, all model configurations are able to replicate Vb-cyclones, their trajectories, and associated precipitation fields. Cyclone trajectories are comparably well simulated with the coupled models, as with the stand-alone simulation which is driven by the reanalysis SST in the MED and NORDIC seas. The cyclone intensity shows large deviations from reanalysis reference in the simulations with the interactive MED Sea, and smallest with CCLM. Precipitation characteristics are similarly simulated in the coupled and stand-alone (with reanalysis SST) simulations. The results suggest that our coupled RCM is useful for studying the impacts of highly resolved and interactively simulated SSTs on European extreme events and regional climate, a crucial prerequisite for understanding future climate conditions. |
author2 |
Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL) |
format |
Article in Journal/Newspaper |
author |
Akhtar, Naveed Krug, Amelie Brauch, Jennifer Arsouze, Thomas Dieterich, Christian Ahrens, Bodo |
author_facet |
Akhtar, Naveed Krug, Amelie Brauch, Jennifer Arsouze, Thomas Dieterich, Christian Ahrens, Bodo |
author_sort |
Akhtar, Naveed |
title |
European marginal seas in a regional atmosphere-ocean coupled model and their impact on Vb-cyclones and associated precipitation |
title_short |
European marginal seas in a regional atmosphere-ocean coupled model and their impact on Vb-cyclones and associated precipitation |
title_full |
European marginal seas in a regional atmosphere-ocean coupled model and their impact on Vb-cyclones and associated precipitation |
title_fullStr |
European marginal seas in a regional atmosphere-ocean coupled model and their impact on Vb-cyclones and associated precipitation |
title_full_unstemmed |
European marginal seas in a regional atmosphere-ocean coupled model and their impact on Vb-cyclones and associated precipitation |
title_sort |
european marginal seas in a regional atmosphere-ocean coupled model and their impact on vb-cyclones and associated precipitation |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal-insu.archives-ouvertes.fr/insu-03727014 https://doi.org/10.1007/s00382-019-04906-x |
genre |
Nordic Seas |
genre_facet |
Nordic Seas |
op_source |
ISSN: 0930-7575 EISSN: 1432-0894 Climate Dynamics https://hal-insu.archives-ouvertes.fr/insu-03727014 Climate Dynamics, Springer Verlag, 2019, 53, pp.5967-5984. ⟨10.1007/s00382-019-04906-x⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00382-019-04906-x insu-03727014 https://hal-insu.archives-ouvertes.fr/insu-03727014 BIBCODE: 2019ClDy.53.5967A doi:10.1007/s00382-019-04906-x |
op_doi |
https://doi.org/10.1007/s00382-019-04906-x |
container_title |
Climate Dynamics |
container_volume |
53 |
container_issue |
9-10 |
container_start_page |
5967 |
op_container_end_page |
5984 |
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1766115371439357952 |