Validation of three different scientific ozone products retrieved from IASI spectra using ozonesondes

G. Dufour; M. Eremenko; A. Griesfeller; B. Barret; E. Leflochmoën; Cathy Clerbaux; Juliette Hadji-Lazaro; P.-F. Coheur; D. Hurtmans

HAL : hal-00618864, version 1

DOI : 10.5194/amt-5-611-2012

Fiche concise

Récupérer au format

Validation of three different scientific ozone products retrieved from IASI spectra using ozonesondes
Dufour G., Eremenko M., Griesfeller A., Barret B., Leflochmoën E., Clerbaux C., Hadji-Lazaro J., Coheur P.-F., Hurtmans D.
Atmospheric Measurement Techniques 5, 3 (2012) 611-630 - http://hal.archives-ouvertes.fr/hal-00618864

Type de publication :

Articles dans des revues avec comité de lecture

Domaine :

Physique/Physique/Physique Atmosphérique et Océanique

Titre :

Validation of three different scientific ozone products retrieved from IASI spectra using ozonesondes

Auteur(s) :

G. Dufour ¹, M. Eremenko ¹, A. Griesfeller ¹, B. Barret ², E. Leflochmoën ², Cathy Clerbaux ^3, 4, 5, Juliette Hadji-Lazaro ^4, 5, P.-F. Coheur ³, D. Hurtmans ³

Laboratoire :

1 :	Laboratoire inter-universitaire des systèmes atmosphèriques (LISA)

	http://www.lisa.univ-paris12.fr/

	CNRS : UMR7583 – INSU – Université Paris VII - Paris Diderot – Université Paris-Est Créteil Val-de-Marne (UPEC)

	61 Av du général de Gaulle 94010 CRETEIL CEDEX

	France

2 :	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

3 :	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

4 :	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

5 :	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

Équipe de recherche :

tact

Résumé :

Three scientific ozone products from the Infrared Atmospheric Sounding Interferometer (IASI) aboard MetOp-A, retrieved in three different research teams (LA, LATMOS/ULB, LISA) with different retrieval schemes, are characterized and validated using ozonesondes measurements. The three products are mature enough to be used for detailed analyses of atmospheric chemistry and transport in the troposphere. The characteristics of the products are analyzed in terms of retrieval sensitivity, systematic and random errors, and ability to retrieve the natural variability of ozone and focus on different partial columns from the lower troposphere up to 30 km. The validation covers the midlatitudes and the tropics and the period from January to December 2008. The products present degrees of freedom (DOF) in the troposphere between 1 and 1.2 on average in the midlatitudes and between 1 and 1.4 in the tropics. The DOF are distributed differently on the vertical depending on the profiles and the season: summer leading to a better sensitivity to the lower troposphere, as expected. The error estimates range between 10 and 20 % from the lower tropospheric partial columns (0-6 km and 0-8 km for the midlatitudes and the tropics respectively) to the UTLS partial columns (8-16 km and 11-20 km for the midlatitudes and the tropics respectively) for all the products and are about 5 % in the stratosphere (16-30 km) and for the column up to 30 km. The main feature that arises from the comparison with the ozonesondes is a systematic overestimation of ozone in the UTLS (between 10 and 25 %) by the three products in the midlatitudes and the tropics, attributed to the moderate vertical resolution of IASI and possibly to spectroscopic inconsistencies. The ability of the products to reproduce natural variability of tropospheric ozone is fairly good and depends on the considered season and region.

Langue du texte
intégral :

Anglais

Journal :

Atmospheric Measurement Techniques

Audience :

non spécifiée

Date de publication :

2012

Volume :

Numéro :

Page, identifiant, ... :

611-630


hal-00618864, version 1
http://hal.archives-ouvertes.fr/hal-00618864
oai:hal.archives-ouvertes.fr:hal-00618864
Contributeur : Catherine Cardon <>
Soumis le : Samedi 3 Septembre 2011, 18:40:15
Dernière modification le : Mardi 27 Mars 2012, 16:00:16