Modulation of radiative aerosols effects by atmospheric circulation over the Euro-Mediterranean region
International audience The present work aims at better understanding regional climate–aerosol interactions by studying the relationships between aerosols and synoptic atmospheric circulation over the Euro-Mediterranean region. Two 40-year simulations (1979–2018) have been carried out with version 6....
Published in: | Atmospheric Chemistry and Physics |
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Main Authors: | , , , , , , , , , |
Other Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2020
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Subjects: | |
Online Access: | https://hal.science/hal-03013980 https://hal.science/hal-03013980/document https://hal.science/hal-03013980/file/acp-20-8315-2020.pdf https://doi.org/10.5194/acp-20-8315-2020 |
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Université Toulouse III - Paul Sabatier: HAL-UPS |
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English |
topic |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology |
spellingShingle |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology Nabat, Pierre Somot, Samuel Cassou, Christophe Mallet, Marc Michou, Martine Bouniol, Dominique Decharme, Bertrand Drugé, Thomas Roehrig, Romain Saint-Martin, David Modulation of radiative aerosols effects by atmospheric circulation over the Euro-Mediterranean region |
topic_facet |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology |
description |
International audience The present work aims at better understanding regional climate–aerosol interactions by studying the relationships between aerosols and synoptic atmospheric circulation over the Euro-Mediterranean region. Two 40-year simulations (1979–2018) have been carried out with version 6.3 of the Centre National de Recherches Météorologiques (National Centre for Meteorological Research) – Aire Limitée Adaptation dynamique Développement InterNational (CNRM-ALADIN) regional climate model, one using interactive aerosols and the other one without any aerosol. The simulation with aerosols has been evaluated in terms of different climate and aerosol parameters. This evaluation shows a good agreement between the model and observations, significant improvements compared to the previous model version and consequently the relevance of using this model for the study of climate–aerosol interactions over this region. A first attempt to explain the climate variability of aerosols is based on the use of the North Atlantic Oscillation (NAO) index. The latter explains a significant part of the interannual variability, notably in winter for the export of dust aerosols over the Atlantic Ocean and the eastern Mediterranean, and in summer for the positive anomalies of anthropogenic aerosols over western Europe. This index is however not sufficient to fully understand the variations of aerosols in this region, notably at daily scale. The use of “weather regimes”, namely persisting meteorological patterns, stable at synoptic scale for a few days, provides a relevant description of atmospheric circulation, which drives the emission, transport and deposition of aerosols. The four weather regimes usually defined in this area in winter and in summer bring significant information to answer this question. The blocking and NAO+ regimes are largely favourable to strong aerosol effects on shortwave surface radiation and near-surface temperature, either because of higher aerosol loads or because of weaker cloud fraction, which ... |
author2 |
Groupe de Météorologie de Grande Échelle et Climat (GMGEC) Centre national de recherches météorologiques (CNRM) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) Climat, Environnement, Couplages et Incertitudes Toulouse (CECI) Centre Européen de Recherche et de Formation Avancée en Calcul Scientifique (CERFACS)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Groupe de Météorologie à Moyenne Échelle (GMME) |
format |
Article in Journal/Newspaper |
author |
Nabat, Pierre Somot, Samuel Cassou, Christophe Mallet, Marc Michou, Martine Bouniol, Dominique Decharme, Bertrand Drugé, Thomas Roehrig, Romain Saint-Martin, David |
author_facet |
Nabat, Pierre Somot, Samuel Cassou, Christophe Mallet, Marc Michou, Martine Bouniol, Dominique Decharme, Bertrand Drugé, Thomas Roehrig, Romain Saint-Martin, David |
author_sort |
Nabat, Pierre |
title |
Modulation of radiative aerosols effects by atmospheric circulation over the Euro-Mediterranean region |
title_short |
Modulation of radiative aerosols effects by atmospheric circulation over the Euro-Mediterranean region |
title_full |
Modulation of radiative aerosols effects by atmospheric circulation over the Euro-Mediterranean region |
title_fullStr |
Modulation of radiative aerosols effects by atmospheric circulation over the Euro-Mediterranean region |
title_full_unstemmed |
Modulation of radiative aerosols effects by atmospheric circulation over the Euro-Mediterranean region |
title_sort |
modulation of radiative aerosols effects by atmospheric circulation over the euro-mediterranean region |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://hal.science/hal-03013980 https://hal.science/hal-03013980/document https://hal.science/hal-03013980/file/acp-20-8315-2020.pdf https://doi.org/10.5194/acp-20-8315-2020 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-03013980 Atmospheric Chemistry and Physics, 2020, 20 (14), pp.8315-8349. ⟨10.5194/acp-20-8315-2020⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-20-8315-2020 hal-03013980 https://hal.science/hal-03013980 https://hal.science/hal-03013980/document https://hal.science/hal-03013980/file/acp-20-8315-2020.pdf doi:10.5194/acp-20-8315-2020 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/acp-20-8315-2020 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
20 |
container_issue |
14 |
container_start_page |
8315 |
op_container_end_page |
8349 |
_version_ |
1810464558485078016 |
spelling |
ftutoulouse3hal:oai:HAL:hal-03013980v1 2024-09-15T18:24:14+00:00 Modulation of radiative aerosols effects by atmospheric circulation over the Euro-Mediterranean region Nabat, Pierre Somot, Samuel Cassou, Christophe Mallet, Marc Michou, Martine Bouniol, Dominique Decharme, Bertrand Drugé, Thomas Roehrig, Romain Saint-Martin, David Groupe de Météorologie de Grande Échelle et Climat (GMGEC) Centre national de recherches météorologiques (CNRM) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) Climat, Environnement, Couplages et Incertitudes Toulouse (CECI) Centre Européen de Recherche et de Formation Avancée en Calcul Scientifique (CERFACS)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Groupe de Météorologie à Moyenne Échelle (GMME) 2020 https://hal.science/hal-03013980 https://hal.science/hal-03013980/document https://hal.science/hal-03013980/file/acp-20-8315-2020.pdf https://doi.org/10.5194/acp-20-8315-2020 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-20-8315-2020 hal-03013980 https://hal.science/hal-03013980 https://hal.science/hal-03013980/document https://hal.science/hal-03013980/file/acp-20-8315-2020.pdf doi:10.5194/acp-20-8315-2020 info:eu-repo/semantics/OpenAccess ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-03013980 Atmospheric Chemistry and Physics, 2020, 20 (14), pp.8315-8349. ⟨10.5194/acp-20-8315-2020⟩ [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology info:eu-repo/semantics/article Journal articles 2020 ftutoulouse3hal https://doi.org/10.5194/acp-20-8315-2020 2024-06-25T00:14:42Z International audience The present work aims at better understanding regional climate–aerosol interactions by studying the relationships between aerosols and synoptic atmospheric circulation over the Euro-Mediterranean region. Two 40-year simulations (1979–2018) have been carried out with version 6.3 of the Centre National de Recherches Météorologiques (National Centre for Meteorological Research) – Aire Limitée Adaptation dynamique Développement InterNational (CNRM-ALADIN) regional climate model, one using interactive aerosols and the other one without any aerosol. The simulation with aerosols has been evaluated in terms of different climate and aerosol parameters. This evaluation shows a good agreement between the model and observations, significant improvements compared to the previous model version and consequently the relevance of using this model for the study of climate–aerosol interactions over this region. A first attempt to explain the climate variability of aerosols is based on the use of the North Atlantic Oscillation (NAO) index. The latter explains a significant part of the interannual variability, notably in winter for the export of dust aerosols over the Atlantic Ocean and the eastern Mediterranean, and in summer for the positive anomalies of anthropogenic aerosols over western Europe. This index is however not sufficient to fully understand the variations of aerosols in this region, notably at daily scale. The use of “weather regimes”, namely persisting meteorological patterns, stable at synoptic scale for a few days, provides a relevant description of atmospheric circulation, which drives the emission, transport and deposition of aerosols. The four weather regimes usually defined in this area in winter and in summer bring significant information to answer this question. The blocking and NAO+ regimes are largely favourable to strong aerosol effects on shortwave surface radiation and near-surface temperature, either because of higher aerosol loads or because of weaker cloud fraction, which ... Article in Journal/Newspaper North Atlantic North Atlantic oscillation Université Toulouse III - Paul Sabatier: HAL-UPS Atmospheric Chemistry and Physics 20 14 8315 8349 |