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Assimilation of IASI satellite CO fields into a global chemistry transport model for validation against aircraft measurements
Klonecki A., Pommier M., Clerbaux C., Ancellet G., Cammas J.-P., Coheur P.-F., Cozic A., Diskin G.S., Hadji-Lazaro J., Hauglustaine D.A. et al
Atmospheric Chemistry and Physics 12, 10 (2012) 4493-4512 - http://hal.archives-ouvertes.fr/hal-00647994
Articles dans des revues avec comité de lecture
Physique/Physique/Physique Atmosphérique et Océanique
Sciences de l'environnement/Milieux et Changements globaux
Assimilation of IASI satellite CO fields into a global chemistry transport model for validation against aircraft measurements
A. Klonecki 1, Matthieu Pommier () 2, 3, 4, 5, Cathy Clerbaux () 2, 3, 5, 6, Gérard Ancellet () 2, 3, 5, J.-P. Cammas 7, P.-F. Coheur 6, A. Cozic 8, G. S. Diskin 9, Juliette Hadji-Lazaro () 2, 3, 5, D. A. Hauglustaine 8, D. Hurtmans 6, B. Khattatov 10, J.-F. Lamarque 10, Kathy S. Law () 2, 3, 5, P. Nedelec 7, J.-D. Paris 3, 8, J. R. Podolske 11, P. Prunet 1, H. Schlager 12, S. Szopa 8, S. Turquety 5, 13
1 :  NOVELTIS
NOVELTIS
Parc Technologique du Canal - 2 Avenue de l'Europe 31520 Ramonville-Saint-Agne
France
2 :  Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS)
http://www.latmos.ipsl.fr
CNRS : UMR8190 – Université Pierre et Marie Curie (UPMC) - Paris VI – Université de Versailles Saint-Quentin-en-Yvelines – INSU
France
3 :  Institut Pierre-Simon-Laplace (IPSL)
http://www.ipsl.jussieu.fr/
CNRS : FR636 – Institut de recherche pour le développement [IRD] – CEA – CNES – INSU – Université Pierre et Marie Curie (UPMC) - Paris VI – Université de Versailles Saint-Quentin-en-Yvelines – Ecole normale supérieure de Paris - ENS Paris
4 Place Jussieu 75252 PARIS CEDEX 05
France
4 :  Air Quality Research Division, Environment Canada
Environment Canada
Ottawa, Ontario, Canada
Canada
5 :  Université Pierre et Marie Curie - Paris 6 (UPMC)
http://www.upmc.fr/
Université Pierre et Marie Curie (UPMC) - Paris VI
4 place Jussieu - 75005 Paris
France
6 :  Spectroscopie de l'atmosphère, Service de Chimie Quantique et Photophysique
http://www.ulb.ac.be/cpm/
Université Libre de Bruxelles
Université Libre de Bruxelles 50 avenue F. D. Roosevelt B-1050 Brussels
Belgique
7 :  Laboratoire d'aérologie (LA)
http://www.aero.obs-mip.fr/
CNRS : UMR5560 – Observatoire Midi-Pyrénées – INSU – Université Paul Sabatier [UPS] - Toulouse III
14 avenue Edouard Belin 31400 Toulouse
France
8 :  Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (LSCE)
http://www.lsce.ipsl.fr/
CNRS : UMR8212 – CEA : DSM/LSCE – Université de Versailles Saint-Quentin-en-Yvelines
LSCE-CEA-Orme des Merisiers (point courrier 129) F-91191 GIF-SUR-YVETTE CEDEX LSCE-Vallée Bât. 12, avenue de la Terrasse, F-91198 GIF-SUR-YVETTE CEDEX
France
9 :  NASA Langley Research Center
http://www.nasa.gov/centers/langley/home/index.html
NASA
Hampton, Virginia
États-Unis
10 :  National Center for Atmospheric Research (NCAR)
The University Corporation for Atmospheric Research
Boulder Colorado
États-Unis
11 :  NASA Ames Research Center (NASA - ARC)
http://www.nasa.gov/centers/ames/home/index.html
NASA
NASA Ames Research Center Moffett Field, California 94035 Phone: (650) 604-5000
États-Unis
12 :  Deutsches Zentrum für Luft- und Raumfahrt, Institut für Physik der Atmosphäre (DLR)
http://www.dlr.de/
Deutsches Zentrum für Luft- und Raumfahrt
Oberpfaffenhofen
Allemagne
13 :  Laboratoire de Météorologie Dynamique (LMD)
http://www.lmd.jussieu.fr/
CNRS : UMR8539 – INSU – Université Pierre et Marie Curie (UPMC) - Paris VI – Polytechnique - X – Ecole normale supérieure de Paris - ENS Paris
LMD ENS 24 Rue Lhomond 75231 Paris Cedex 05
France
tact
This work evaluates the IASI CO product against independent in-situ aircraft data from the MOZAIC program and the POLARCAT aircraft campaign. The validation is carried out by analysing the impact of assimilation of eight months of IASI CO columns retrieved for the period of May to December 2008 into the global chemistry transport model LMDz-INCA. A modelling system based on a sub-optimal Kalman filter was developed and a specific treatment that takes into account the representativeness of observations at the scale of the model grid is applied to the IASI CO columns and associated errors before their assimilation in the model. Comparisons of the assimilated CO profiles with in situ CO measurements indicate that the assimilation leads to a considerable improvement of the model simulations in the middle troposphere as compared with a control run with no assimilation. Model biases in the simulation of background values are reduced and improvement in the simulation of very high concentrations is observed. The improvement is due to the transport by the model of the information present in the IASI CO retrievals. Our analysis also shows the impact of assimilation of CO on the representation of transport into the Arctic region during the POLARCAT summer campaign. A considerable increase in CO mixing ratios over the Asian source region was observed when assimilation was used leading to much higher values of CO during the cross-pole transport episode. These higher values are in good agreement with data from the POLARCAT flights that sampled this plume.
Anglais

Atmospheric Chemistry and Physics
Publisher European Geosciences Union (EGU)
ISSN 1680-7316 (eISSN : 1680-7324)
non spécifiée
2012
12
10
4493-4512