Subregional inversion of North African dust sources
International audience The emission of mineral dust aerosols in arid and semiarid regions is a complex process whose representation in atmospheric models remains crude, due to insufficient knowledge about the aerosol lifting process itself, the lack of global data on soil characteristics, and the im...
Published in: | Journal of Geophysical Research: Atmospheres |
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Main Authors: | , , , |
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Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2016
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Online Access: | https://hal.sorbonne-universite.fr/hal-01366496 https://hal.sorbonne-universite.fr/hal-01366496/document https://hal.sorbonne-universite.fr/hal-01366496/file/Escribano_2016_Subregional.pdf https://doi.org/10.1002/2016JD025020 |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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English |
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[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] |
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[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] Escribano, Jerónimo Boucher, Olivier Chevallier, Frédéric Huneeus, Nicolás Subregional inversion of North African dust sources |
topic_facet |
[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] |
description |
International audience The emission of mineral dust aerosols in arid and semiarid regions is a complex process whose representation in atmospheric models remains crude, due to insufficient knowledge about the aerosol lifting process itself, the lack of global data on soil characteristics, and the impossibility for the models to resolve the fine-scale variability in the wind field that drives some of the dust events. As a result, there are large uncertainties in the total emission flux of mineral dust, its natural variability at various timescales, and the possible contribution from anthropogenic land use changes. This work aims for estimating dust emissions and reduces their uncertainty over the Sahara desert and the Arabian Peninsula—the largest dust source region of the globe. We use a data assimilation approach to constrain dust emission fluxes at a monthly resolution for 18 subregions. The Moderate Resolution Imaging Spectroradiometer satellite-derived aerosol optical depth is assimilated in a regional configuration of a general circulation model coupled to an aerosol model. We describe this data assimilation system and apply it for 1 year, resulting in a total mineral dust emissions flux estimate of 2900 Tg yr −1 over the Sahara desert and the Arabian Peninsula for the year 2006. The analysis field of aerosol optical depth shows an improved fit relative to independent Aerosol Robotic Network measurements as compared to the model prior field. |
author2 |
Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS Paris) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS Paris) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École des Ponts ParisTech (ENPC)-École polytechnique (X)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Modélisation INVerse pour les mesures atmosphériques et SATellitaires (SATINV) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Universidad de Chile = University of Chile Santiago (UCHILE) |
format |
Article in Journal/Newspaper |
author |
Escribano, Jerónimo Boucher, Olivier Chevallier, Frédéric Huneeus, Nicolás |
author_facet |
Escribano, Jerónimo Boucher, Olivier Chevallier, Frédéric Huneeus, Nicolás |
author_sort |
Escribano, Jerónimo |
title |
Subregional inversion of North African dust sources |
title_short |
Subregional inversion of North African dust sources |
title_full |
Subregional inversion of North African dust sources |
title_fullStr |
Subregional inversion of North African dust sources |
title_full_unstemmed |
Subregional inversion of North African dust sources |
title_sort |
subregional inversion of north african dust sources |
publisher |
HAL CCSD |
publishDate |
2016 |
url |
https://hal.sorbonne-universite.fr/hal-01366496 https://hal.sorbonne-universite.fr/hal-01366496/document https://hal.sorbonne-universite.fr/hal-01366496/file/Escribano_2016_Subregional.pdf https://doi.org/10.1002/2016JD025020 |
genre |
Aerosol Robotic Network |
genre_facet |
Aerosol Robotic Network |
op_source |
ISSN: 2169-897X EISSN: 2169-8996 Journal of Geophysical Research: Atmospheres https://hal.sorbonne-universite.fr/hal-01366496 Journal of Geophysical Research: Atmospheres, American Geophysical Union, 2016, 121 (14), pp.8549-8566 ⟨10.1002/2016JD025020⟩ |
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info:eu-repo/semantics/altIdentifier/doi/10.1002/2016JD025020 hal-01366496 https://hal.sorbonne-universite.fr/hal-01366496 https://hal.sorbonne-universite.fr/hal-01366496/document https://hal.sorbonne-universite.fr/hal-01366496/file/Escribano_2016_Subregional.pdf doi:10.1002/2016JD025020 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1002/2016JD025020 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
121 |
container_issue |
14 |
container_start_page |
8549 |
op_container_end_page |
8566 |
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1766000317720166400 |
spelling |
ftccsdartic:oai:HAL:hal-01366496v1 2023-05-15T13:06:18+02:00 Subregional inversion of North African dust sources Escribano, Jerónimo Boucher, Olivier Chevallier, Frédéric Huneeus, Nicolás Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS Paris) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS Paris) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École des Ponts ParisTech (ENPC)-École polytechnique (X)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Modélisation INVerse pour les mesures atmosphériques et SATellitaires (SATINV) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Universidad de Chile = University of Chile Santiago (UCHILE) 2016-07 https://hal.sorbonne-universite.fr/hal-01366496 https://hal.sorbonne-universite.fr/hal-01366496/document https://hal.sorbonne-universite.fr/hal-01366496/file/Escribano_2016_Subregional.pdf https://doi.org/10.1002/2016JD025020 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1002/2016JD025020 hal-01366496 https://hal.sorbonne-universite.fr/hal-01366496 https://hal.sorbonne-universite.fr/hal-01366496/document https://hal.sorbonne-universite.fr/hal-01366496/file/Escribano_2016_Subregional.pdf doi:10.1002/2016JD025020 info:eu-repo/semantics/OpenAccess ISSN: 2169-897X EISSN: 2169-8996 Journal of Geophysical Research: Atmospheres https://hal.sorbonne-universite.fr/hal-01366496 Journal of Geophysical Research: Atmospheres, American Geophysical Union, 2016, 121 (14), pp.8549-8566 ⟨10.1002/2016JD025020⟩ [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] info:eu-repo/semantics/article Journal articles 2016 ftccsdartic https://doi.org/10.1002/2016JD025020 2021-12-19T02:43:54Z International audience The emission of mineral dust aerosols in arid and semiarid regions is a complex process whose representation in atmospheric models remains crude, due to insufficient knowledge about the aerosol lifting process itself, the lack of global data on soil characteristics, and the impossibility for the models to resolve the fine-scale variability in the wind field that drives some of the dust events. As a result, there are large uncertainties in the total emission flux of mineral dust, its natural variability at various timescales, and the possible contribution from anthropogenic land use changes. This work aims for estimating dust emissions and reduces their uncertainty over the Sahara desert and the Arabian Peninsula—the largest dust source region of the globe. We use a data assimilation approach to constrain dust emission fluxes at a monthly resolution for 18 subregions. The Moderate Resolution Imaging Spectroradiometer satellite-derived aerosol optical depth is assimilated in a regional configuration of a general circulation model coupled to an aerosol model. We describe this data assimilation system and apply it for 1 year, resulting in a total mineral dust emissions flux estimate of 2900 Tg yr −1 over the Sahara desert and the Arabian Peninsula for the year 2006. The analysis field of aerosol optical depth shows an improved fit relative to independent Aerosol Robotic Network measurements as compared to the model prior field. Article in Journal/Newspaper Aerosol Robotic Network Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Journal of Geophysical Research: Atmospheres 121 14 8549 8566 |