Long-range transport of Saharan dust and its radiative impact on precipitation forecast: a case study during the Convective and Orographically induced Precipitation Study (COPS)
International audience A Saharan dust event affected the Rhine valley in southwestern Germany and eastern France on 1 August 2007 during the Convective and Orographically induced Precipitation Study (COPS) experiment. Prior to an episode of intense convection, a layer of dry, clean air capped by a m...
Published in: | Quarterly Journal of the Royal Meteorological Society |
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Main Authors: | , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2011
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Online Access: | https://hal.science/hal-00560742 https://doi.org/10.1002/qj.719 |
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Open Polar |
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École Polytechnique, Université Paris-Saclay: HAL |
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ftepunivpsaclay |
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English |
topic |
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDE.MCG]Environmental Sciences/Global Changes [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology |
spellingShingle |
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDE.MCG]Environmental Sciences/Global Changes [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology Chaboureau, Jean-Pierre Richard, Evelyne Pinty, Jean-Pierre Flamant, Cyrille Di Girolamo, Paolo Kiemle, Christoph Behrendt, Andreas Chepfer, Hélène Chiriaco, Marjolaine Wulfmeyer, Volker Long-range transport of Saharan dust and its radiative impact on precipitation forecast: a case study during the Convective and Orographically induced Precipitation Study (COPS) |
topic_facet |
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDE.MCG]Environmental Sciences/Global Changes [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology |
description |
International audience A Saharan dust event affected the Rhine valley in southwestern Germany and eastern France on 1 August 2007 during the Convective and Orographically induced Precipitation Study (COPS) experiment. Prior to an episode of intense convection, a layer of dry, clean air capped by a moist, dusty layer was observed using Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) and airborne and ground-based lidar observations from North Africa to western Europe. The origin of the different layers was investigated using the regional model Meso-NH. For the purpose of modelling evaluation, a lidar simulator was developed for direct comparison of observed and simulated vertical structures of the lidar backscattered signal. Overall, the model reproduced the vertical structure of dust probed several times by the different lidar systems during its long-range transport. From Lagrangian back trajectories it was found that the dust was mobilized from sources in Mauritania six days earlier, while the dry layer subsided over the north Atlantic. Off the Moroccan coasts, the dry layer folded down beneath the dusty air mass and the two-layer structure was advected to the Rhine valley in about two days. By heating the atmosphere, the dust layer changed the static stability of the atmosphere and thus the occurrence of convection. A study of sensitivity to the radiative effect of dust showed a better prediction of precipitation when a dust prognostic scheme was used rather than climatology or when dust effects were ignored. This result suggests that dust episodes that occur prior to convective events might be important for quantitative precipitation forecasts |
author2 |
Laboratoire d'aérologie (LAERO) Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-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)-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) SPACE - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Dipartimento di Ingegneria e Fisica dell'Ambiente Potenza (Difa) Università degli studi della Basilicata Potenza (UNIBAS) DLR Institut für Physik der Atmosphäre = DLR Institute of Atmospheric Physics (IPA) Deutsches Zentrum für Luft- und Raumfahrt Oberpfaffenhofen-Wessling (DLR) Institut für Physik und Meteorologie Stuttgart (IPM) Universität Hohenheim Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-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 |
Chaboureau, Jean-Pierre Richard, Evelyne Pinty, Jean-Pierre Flamant, Cyrille Di Girolamo, Paolo Kiemle, Christoph Behrendt, Andreas Chepfer, Hélène Chiriaco, Marjolaine Wulfmeyer, Volker |
author_facet |
Chaboureau, Jean-Pierre Richard, Evelyne Pinty, Jean-Pierre Flamant, Cyrille Di Girolamo, Paolo Kiemle, Christoph Behrendt, Andreas Chepfer, Hélène Chiriaco, Marjolaine Wulfmeyer, Volker |
author_sort |
Chaboureau, Jean-Pierre |
title |
Long-range transport of Saharan dust and its radiative impact on precipitation forecast: a case study during the Convective and Orographically induced Precipitation Study (COPS) |
title_short |
Long-range transport of Saharan dust and its radiative impact on precipitation forecast: a case study during the Convective and Orographically induced Precipitation Study (COPS) |
title_full |
Long-range transport of Saharan dust and its radiative impact on precipitation forecast: a case study during the Convective and Orographically induced Precipitation Study (COPS) |
title_fullStr |
Long-range transport of Saharan dust and its radiative impact on precipitation forecast: a case study during the Convective and Orographically induced Precipitation Study (COPS) |
title_full_unstemmed |
Long-range transport of Saharan dust and its radiative impact on precipitation forecast: a case study during the Convective and Orographically induced Precipitation Study (COPS) |
title_sort |
long-range transport of saharan dust and its radiative impact on precipitation forecast: a case study during the convective and orographically induced precipitation study (cops) |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://hal.science/hal-00560742 https://doi.org/10.1002/qj.719 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 0035-9009 EISSN: 1477-870X Quarterly Journal of the Royal Meteorological Society https://hal.science/hal-00560742 Quarterly Journal of the Royal Meteorological Society, 2011, 137 (S1), pp.236-251. ⟨10.1002/qj.719⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/qj.719 hal-00560742 https://hal.science/hal-00560742 doi:10.1002/qj.719 |
op_doi |
https://doi.org/10.1002/qj.719 |
container_title |
Quarterly Journal of the Royal Meteorological Society |
container_volume |
137 |
container_issue |
S1 |
container_start_page |
236 |
op_container_end_page |
251 |
_version_ |
1801379999162302464 |
spelling |
ftepunivpsaclay:oai:HAL:hal-00560742v1 2024-06-09T07:48:19+00:00 Long-range transport of Saharan dust and its radiative impact on precipitation forecast: a case study during the Convective and Orographically induced Precipitation Study (COPS) Chaboureau, Jean-Pierre Richard, Evelyne Pinty, Jean-Pierre Flamant, Cyrille Di Girolamo, Paolo Kiemle, Christoph Behrendt, Andreas Chepfer, Hélène Chiriaco, Marjolaine Wulfmeyer, Volker Laboratoire d'aérologie (LAERO) Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-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)-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) SPACE - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Dipartimento di Ingegneria e Fisica dell'Ambiente Potenza (Difa) Università degli studi della Basilicata Potenza (UNIBAS) DLR Institut für Physik der Atmosphäre = DLR Institute of Atmospheric Physics (IPA) Deutsches Zentrum für Luft- und Raumfahrt Oberpfaffenhofen-Wessling (DLR) Institut für Physik und Meteorologie Stuttgart (IPM) Universität Hohenheim Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-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) 2011 https://hal.science/hal-00560742 https://doi.org/10.1002/qj.719 en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1002/qj.719 hal-00560742 https://hal.science/hal-00560742 doi:10.1002/qj.719 ISSN: 0035-9009 EISSN: 1477-870X Quarterly Journal of the Royal Meteorological Society https://hal.science/hal-00560742 Quarterly Journal of the Royal Meteorological Society, 2011, 137 (S1), pp.236-251. ⟨10.1002/qj.719⟩ [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDE.MCG]Environmental Sciences/Global Changes [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology info:eu-repo/semantics/article Journal articles 2011 ftepunivpsaclay https://doi.org/10.1002/qj.719 2024-05-16T11:37:12Z International audience A Saharan dust event affected the Rhine valley in southwestern Germany and eastern France on 1 August 2007 during the Convective and Orographically induced Precipitation Study (COPS) experiment. Prior to an episode of intense convection, a layer of dry, clean air capped by a moist, dusty layer was observed using Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) and airborne and ground-based lidar observations from North Africa to western Europe. The origin of the different layers was investigated using the regional model Meso-NH. For the purpose of modelling evaluation, a lidar simulator was developed for direct comparison of observed and simulated vertical structures of the lidar backscattered signal. Overall, the model reproduced the vertical structure of dust probed several times by the different lidar systems during its long-range transport. From Lagrangian back trajectories it was found that the dust was mobilized from sources in Mauritania six days earlier, while the dry layer subsided over the north Atlantic. Off the Moroccan coasts, the dry layer folded down beneath the dusty air mass and the two-layer structure was advected to the Rhine valley in about two days. By heating the atmosphere, the dust layer changed the static stability of the atmosphere and thus the occurrence of convection. A study of sensitivity to the radiative effect of dust showed a better prediction of precipitation when a dust prognostic scheme was used rather than climatology or when dust effects were ignored. This result suggests that dust episodes that occur prior to convective events might be important for quantitative precipitation forecasts Article in Journal/Newspaper North Atlantic École Polytechnique, Université Paris-Saclay: HAL Quarterly Journal of the Royal Meteorological Society 137 S1 236 251 |