On the ability of chemical transport models to simulate the vertical structure of the N2O, NO2 and HNO3 species in the mid-latitude stratosphere

G. Berthet; N. Huret; Frank Lefèvre; G. Moreau; C. Robert; M. Chartier; V. Catoire; B. Barret; I. Pisso; L. Pomathiod

HAL: hal-00083585, version 1

On the ability of chemical transport models to simulate the vertical structure of the N2O, NO2 and HNO3 species in the mid-latitude stratosphere
Berthet G., Huret N., Lefèvre F., Moreau G., Robert C., Chartier M., Catoire V., Barret B., Pisso I., Pomathiod L.
Atmospheric Chemistry and Physics 6 (2006) 1599-1609 - http://hal.archives-ouvertes.fr/hal-00083585

Publication type:

Article in peer-reviewed journal

Subject:

Physics/Physics/Atmospheric and Oceanic Physics

Title:

On the ability of chemical transport models to simulate the vertical structure of the N2O, NO2 and HNO3 species in the mid-latitude stratosphere

Author(s):

G. Berthet ^1, 2, N. Huret ², Frank Lefèvre ¹, G. Moreau ², C. Robert ², M. Chartier ², V. Catoire ², B. Barret ³, I. Pisso ⁴, L. Pomathiod ²

Laboratory:

1:	Service d'aéronomie (SA)

	http://www.aero.jussieu.fr/

	CNRS : UMR7620 – INSU – Université Pierre et Marie Curie [UPMC] - Paris VI – Université de Versailles Saint-Quentin-en-Yvelines

	France

2:	Laboratoire de physique et chimie de l'environnement (LPCE)

	http://lpce.cnrs-orleans.fr

	CNRS : UMR6115 – INSU – Université d'Orléans

	3A Av de la recherche scientifiq 45071 ORLEANS CEDEX 2

	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

4:	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

Abstract:

In this paper we study the impact of the modelling of N2O on the simulation of NO2 and HNO3 by comparing in situ vertical profiles measured at mid-latitudes with the results of the Reprobus 3-D CTM (Three-dimensional Chemical Transport Model) computed with the kinetic parameters from the JPL recommendation in 2002. The analysis of the measured in situ profile of N2O shows particular features indicating different air mass origins. The measured N2O, NO2 and HNO3 profiles are not satisfyingly reproduced by the CTM when computed using the current 6- hourly ECMWF operational analysis. Improving the simulation of N2O transport allows us to calculate quantities of NO2 and HNO3 in reasonable agreement with observations. This is achieved using 3-hourly winds obtained from ECMWF forecasts. The best agreement is obtained by constraining a one-dimensional version of the model with the observed N2O. This study shows that the modelling of the NOy partitioning with better accuracy relies at least on a correct simulation of N2O and thus of total NOy.

Fulltext language:

English

Journal:

Atmospheric Chemistry and Physics
Publisher	European Geosciences Union (EGU)
ISSN	1680-7316 (eISSN : 1680-7324)

Publication date:

2006

Volume:

Page, identifiant, ...:

1599-1609


hal-00083585, version 1
http://hal.archives-ouvertes.fr/hal-00083585
oai:hal.archives-ouvertes.fr:hal-00083585
From: Cécile Takacs <>
Submitted on: Monday, 3 July 2006 11:40:31
Updated on: Monday, 3 July 2006 11:40:31