Modelling the transport of aerosols during indoex 1999 and comparison with experimental data - 1: carbonaceous aerosol distribution

Minvielle F, Cautenet G, Andreae MO, Lasserre F, Foret G, Cautenet S, Leon JF, Mayol-Bracero OL, Gabriel R, Chazette P, Roca R

ATMOSPHERIC ENVIRONMENT
38 (12): 1811-1822 APR 2004

Abstract:
We present a 3D simulation of the redistribution of black carbon (BC), a major particulate contaminant, over the Indian Ocean, during the INDian Ocean Experiment intensive field phase in March 1999. We use the CSU RAMS mesoscale model coupled with the BC GEIA emission source. The area under study ranges from 40degreesE to 100degreesE and 5degreesS to 30degreesN. The modeled period is 1 month (March). The main model results, i.e., the predicted BC mass concentrations, are compared with the available experimental data. Modelled large-scale BC pollution plumes are in qualitative agreement with satellite imagery, and the model-predicted BC concentrations are generally in quantitative agreement with the aircraft data. At the local scale, the vertical profiles and local measurements also show satisfactory agreement with the model. Vertical profiles exhibit in some instances a layered structure, which may be explained by air masses of contrasting origins. This numerical study is a first step in the development of a mesoscale tool intended to investigate the problem of aerosol mixing. (C) 2004 Elsevier Ltd. All rights reserved.

Author Keywords:
black carbon, INDOEX, transport, mesoscale, aerosol mixing

KeyWords Plus:
INDIAN-OCEAN EXPERIMENT, SULFATE AEROSOLS, CHEMICAL-CHARACTERIZATION, ANTHROPOGENIC SULFATE, SIMULATIONS, BIOMASS, LIDAR, SENSITIVITY, SYSTEM

Addresses:
Minvielle F, CNRS, SA, Tour 45,Couloir 45-46,Etage 3,4 Pl Jussieu, F-75252 Paris 05, France
CNRS, LaMP, F-63177 Aubiere, France
Max Planck Inst Chem, Biogeochem Dept, D-55020 Mainz, Germany
CNRS, LOA, F-59650 Villeneuve Dascq, France
CEA, CNRS, LSCE, F-91191 Gif Sur Yvette, France
CNRS, LMD, F-75252 Paris, France

Publisher:
PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND

IDS Number:
803YS

ISSN:
1352-2310