Assimilation of POLDER aerosol optical thickness into the LMDz-INCA model: Implications for the Arctic aerosol burden
International audience [1] The large spatial and temporal variability of atmospheric aerosol load makes it a challenge to quantify aerosol effect on climate. This study is one of the first attempts to apply data assimilation for the analysis of global aerosol distribution. Aerosol optical thickness...
Published in: | Journal of Geophysical Research |
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Main Authors: | , , , , , |
Other Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2007
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Subjects: | |
Online Access: | https://hal.archives-ouvertes.fr/hal-02872413 https://hal.archives-ouvertes.fr/hal-02872413/document https://hal.archives-ouvertes.fr/hal-02872413/file/Generoso2007_JGR.pdf https://doi.org/10.1029/2005JD006954 |
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ftunivnantes:oai:HAL:hal-02872413v1 |
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openpolar |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Generoso, S. Breon, Francois-Marie Chevallier, Fréderic Balkanski, Yves Schulz, Michael Bey, Isabelle Assimilation of POLDER aerosol optical thickness into the LMDz-INCA model: Implications for the Arctic aerosol burden |
topic_facet |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience [1] The large spatial and temporal variability of atmospheric aerosol load makes it a challenge to quantify aerosol effect on climate. This study is one of the first attempts to apply data assimilation for the analysis of global aerosol distribution. Aerosol optical thickness (AOT) observed from the Polarization and Directionality of the Earth Reflectances (POLDER) spaceborne instrument are assimilated into a three-dimensional chemistry model. POLDER capabilities to distinguish between fine and coarse AOT are used to constrain them separately in the model. Observation and model errors are a key component of such a system and are carefully estimated on a regional basis using some of the high-quality surface observations from the Aerosol Robotic Network (AERONET). Other AERONET data provide an independent evaluation of the a posteriori fields. Results for the fine mode show improvements, in terms of reduction of root-mean-square errors, in most regions with the largest improvements found in the Mediterranean Sea and Eurasia. We emphasize the results for the Arctic, where there is growing evidence of a strong aerosol impact on climate, but a lack of regional and continuous aerosol monitoring. The a posteriori fields noticeably well reproduce the winter-spring ''Arctic Haze'' peak measured in Longyearbyen (15°E, 78°N) and typical seasonal variations in the Arctic region, where AOT increase by up to a factor of three between a posteriori and a priori. Enhanced AOT are found over a longer period in spring 2003 than in 1997, suggesting that the large Russian fires in 2003 have influenced the Arctic aerosol load. |
author2 |
Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) Modélisation INVerse pour les mesures atmosphériques et SATellitaires (SATINV) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) Modelling the Earth Response to Multiple Anthropogenic Interactions and Dynamics (MERMAID) Laboratoire de Modélisation de la Chimie Atmosphérique Ecole Polytechnique Fédérale de Lausanne (EPFL) |
format |
Article in Journal/Newspaper |
author |
Generoso, S. Breon, Francois-Marie Chevallier, Fréderic Balkanski, Yves Schulz, Michael Bey, Isabelle |
author_facet |
Generoso, S. Breon, Francois-Marie Chevallier, Fréderic Balkanski, Yves Schulz, Michael Bey, Isabelle |
author_sort |
Generoso, S. |
title |
Assimilation of POLDER aerosol optical thickness into the LMDz-INCA model: Implications for the Arctic aerosol burden |
title_short |
Assimilation of POLDER aerosol optical thickness into the LMDz-INCA model: Implications for the Arctic aerosol burden |
title_full |
Assimilation of POLDER aerosol optical thickness into the LMDz-INCA model: Implications for the Arctic aerosol burden |
title_fullStr |
Assimilation of POLDER aerosol optical thickness into the LMDz-INCA model: Implications for the Arctic aerosol burden |
title_full_unstemmed |
Assimilation of POLDER aerosol optical thickness into the LMDz-INCA model: Implications for the Arctic aerosol burden |
title_sort |
assimilation of polder aerosol optical thickness into the lmdz-inca model: implications for the arctic aerosol burden |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.archives-ouvertes.fr/hal-02872413 https://hal.archives-ouvertes.fr/hal-02872413/document https://hal.archives-ouvertes.fr/hal-02872413/file/Generoso2007_JGR.pdf https://doi.org/10.1029/2005JD006954 |
long_lat |
ENVELOPE(-59.194,-59.194,-62.308,-62.308) |
geographic |
Arctic Inca Longyearbyen |
geographic_facet |
Arctic Inca Longyearbyen |
genre |
Aerosol Robotic Network Arctic Longyearbyen |
genre_facet |
Aerosol Robotic Network Arctic Longyearbyen |
op_source |
ISSN: 2169-897X EISSN: 2169-8996 Journal of Geophysical Research: Atmospheres https://hal.archives-ouvertes.fr/hal-02872413 Journal of Geophysical Research: Atmospheres, American Geophysical Union, 2007, 112 (D2), pp.D02311. ⟨10.1029/2005JD006954⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2005JD006954 hal-02872413 https://hal.archives-ouvertes.fr/hal-02872413 https://hal.archives-ouvertes.fr/hal-02872413/document https://hal.archives-ouvertes.fr/hal-02872413/file/Generoso2007_JGR.pdf doi:10.1029/2005JD006954 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2005JD006954 |
container_title |
Journal of Geophysical Research |
container_volume |
112 |
container_issue |
D2 |
_version_ |
1766017701299355648 |
spelling |
ftunivnantes:oai:HAL:hal-02872413v1 2023-05-15T13:06:43+02:00 Assimilation of POLDER aerosol optical thickness into the LMDz-INCA model: Implications for the Arctic aerosol burden Generoso, S. Breon, Francois-Marie Chevallier, Fréderic Balkanski, Yves Schulz, Michael Bey, Isabelle Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) Modélisation INVerse pour les mesures atmosphériques et SATellitaires (SATINV) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) Modelling the Earth Response to Multiple Anthropogenic Interactions and Dynamics (MERMAID) Laboratoire de Modélisation de la Chimie Atmosphérique Ecole Polytechnique Fédérale de Lausanne (EPFL) 2007 https://hal.archives-ouvertes.fr/hal-02872413 https://hal.archives-ouvertes.fr/hal-02872413/document https://hal.archives-ouvertes.fr/hal-02872413/file/Generoso2007_JGR.pdf https://doi.org/10.1029/2005JD006954 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2005JD006954 hal-02872413 https://hal.archives-ouvertes.fr/hal-02872413 https://hal.archives-ouvertes.fr/hal-02872413/document https://hal.archives-ouvertes.fr/hal-02872413/file/Generoso2007_JGR.pdf doi:10.1029/2005JD006954 info:eu-repo/semantics/OpenAccess ISSN: 2169-897X EISSN: 2169-8996 Journal of Geophysical Research: Atmospheres https://hal.archives-ouvertes.fr/hal-02872413 Journal of Geophysical Research: Atmospheres, American Geophysical Union, 2007, 112 (D2), pp.D02311. ⟨10.1029/2005JD006954⟩ [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2007 ftunivnantes https://doi.org/10.1029/2005JD006954 2022-10-11T23:29:45Z International audience [1] The large spatial and temporal variability of atmospheric aerosol load makes it a challenge to quantify aerosol effect on climate. This study is one of the first attempts to apply data assimilation for the analysis of global aerosol distribution. Aerosol optical thickness (AOT) observed from the Polarization and Directionality of the Earth Reflectances (POLDER) spaceborne instrument are assimilated into a three-dimensional chemistry model. POLDER capabilities to distinguish between fine and coarse AOT are used to constrain them separately in the model. Observation and model errors are a key component of such a system and are carefully estimated on a regional basis using some of the high-quality surface observations from the Aerosol Robotic Network (AERONET). Other AERONET data provide an independent evaluation of the a posteriori fields. Results for the fine mode show improvements, in terms of reduction of root-mean-square errors, in most regions with the largest improvements found in the Mediterranean Sea and Eurasia. We emphasize the results for the Arctic, where there is growing evidence of a strong aerosol impact on climate, but a lack of regional and continuous aerosol monitoring. The a posteriori fields noticeably well reproduce the winter-spring ''Arctic Haze'' peak measured in Longyearbyen (15°E, 78°N) and typical seasonal variations in the Arctic region, where AOT increase by up to a factor of three between a posteriori and a priori. Enhanced AOT are found over a longer period in spring 2003 than in 1997, suggesting that the large Russian fires in 2003 have influenced the Arctic aerosol load. Article in Journal/Newspaper Aerosol Robotic Network Arctic Longyearbyen Université de Nantes: HAL-UNIV-NANTES Arctic Inca ENVELOPE(-59.194,-59.194,-62.308,-62.308) Longyearbyen Journal of Geophysical Research 112 D2 |