A high resolution climatology of precipitation and deep convection over the Mediterranean region from operational satellite microwave data: development and application to the evaluation of model uncertainties

Chantal Claud; Bahjat Alhammoud; Beatriz M. Funatsu; Cindy Lebeaupin Brossier; Jean-Pierre Chaboureau; Karine Béranger; Philippe Drobinski

HAL : hal-00686605, version 1

DOI : 10.5194/nhess-12-785-2012

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A high resolution climatology of precipitation and deep convection over the Mediterranean region from operational satellite microwave data: development and application to the evaluation of model uncertainties
Claud C., Alhammoud B., Funatsu B. M., Lebeaupin Brossier C., Chaboureau J.-P., Béranger K., Drobinski P.
Natural Hazards and Earth System Sciences 12 (2012) 785-798 - http://hal.archives-ouvertes.fr/hal-00686605

Type de publication :

Articles dans des revues avec comité de lecture

Domaine :

Planète et Univers/Océan, Atmosphère

Titre :

Auteur(s) :

Chantal Claud (

) ¹, Bahjat Alhammoud ¹, Beatriz M. Funatsu ¹, Cindy Lebeaupin Brossier ^1, 2, Jean-Pierre Chaboureau ³, Karine Béranger ², Philippe Drobinski ¹

Laboratoire :

1 :	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

2 :	École Nationale Supérieure de Techniques Avancées (ENSTA ParisTech)

	http://www.ensta.fr/

	ENSTA ParisTech

	32 Boulevard Victor, 75739 Paris cedex 15

	France

3 :	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

Résumé :

A new precipitation and convection dataset for the Mediterranean Basin, derived from operational satellite microwave data is documented. The dataset is derived from diagnostics that rely on brightness temperatures measured since 1999 in the water vapour absorption line (183-191 GHz). The dataset consists of twice-daily (a.m. and p.m.) and monthly maps of precipitation and convection occurrences on a 0.2° lat × 0.2° long grid for the area 25°-60° N, 10° W-50° E. The instruments used so far are the AMSU-B sensor on the NOAA-15 to -17 satellites, and the MHS sensor on the NOAA-18 and -19 and METOP-2 satellites, with precipitation and convection available separately for the different sensors. The slightly different radiometric characteristics of MHS compared to AMSU-B do not affect significantly the continuity of the dataset. Precipitation and convection data from different sensors on different satellites are remarkably consistent, with generally small biases between the instruments. When larger biases appear, they can be explained either by the drifts in the satellite orbit, scan asymmetry, or temporal aliasing from insufficiently resolving the diurnal cycle of precipitation and convection. After a description of climatological aspects of rain and deep convection occurrence, the interest of this dataset to evaluate model uncertainties for simulating a high-impact weather event and for climatic regional runs over this area is illustrated.

Langue du texte
intégral :

Anglais

Journal :

Natural Hazards and Earth System Sciences
Publisher	European Geosciences Union (EGU)
ISSN	1561-8633 (eISSN : 1684-9981)

Audience :

internationale

Date de publication :

23/03/2012

Volume :

Page, identifiant, ... :

785-798


hal-00686605, version 1
http://hal.archives-ouvertes.fr/hal-00686605
oai:hal.archives-ouvertes.fr:hal-00686605
Contributeur : Cindy Lebeaupin Brossier <>
Soumis le : Mardi 10 Avril 2012, 16:33:19
Dernière modification le : Mardi 10 Avril 2012, 16:33:19