Interaction between local and regional pollution during Escompte 2001: impact on surface ozone concentrations (IOP2a and 2b)

被引:26
作者
Cousin, F [1 ]
Tulet, P
Rosset, R
机构
[1] Univ Toulouse 3, CNRS, UMR 5560, Lab Aerol OMP, Toulouse, France
[2] GMEI Meteo France, CNRM, Toulouse, France
关键词
air pollution modelling; regional transport; sea-breeze; ozone layers;
D O I
10.1016/j.atmosres.2004.04.012
中图分类号
P4 [大气科学(气象学)];
学科分类号
0706 ; 070601 ;
摘要
Escompte, a European programme which took place in the Marseille region in June-July 200 1, has been designed as an exhaustive database to be used for the development and validation of air pollution models. The air quality Mesoscale NonHydrostatic Chemistry model (Meso-NH-C) is used to simulate 2 days of an Intensive Observation Period (IOP) documented during the Escompte campaign, June 23 and 24, 2001. We first study the synoptic and local meteorological situation on June 23 and 24, using surface and aircraft measurements. Then, we focus on the pollution episode of June 24. This study emphasizes the deep impact of synoptic and local dynamics on observed ozone concentrations. It is shown that ozone levels are due both to regional and local factors, with highlights of the importance of ozone layering. More generally this confirms, even in an otherwise predominant local sea-breeze regime, the need to consider larger scale regional pollutant transport. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:117 / 137
页数:21
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