Title: AIR POLLUTION DIFFERENCES IN SIMULATION PATTERNS BY USING MM5-CMAQ AND WRF-CMAQ: SUMMER 2003 EUROPEAN POLLUTION EPISODE
Abstract: One of the most important advantages of the modern and state-of-the-art air quality modelling systems is the capability to produce air pollution forecasts and particularly for ozone. In this contribution, we have applied the CMAQ (EPA) air quality modelling system to produce ozone air quality forecasts and compare the results for the 2003 August, episode in Europe. Modern air quality modelling systems are composed by a complete, modern and robust mesoscale meteorological model and a chemical transport module. Two mesoscale meteorological models are used in this application: a) the well-known MM5 model developed by PSU/NCAR (USA) and the next generation b) mesoscale model WRF. The MM5/WRF-chemical transport model requires emission data sets according to the grid spatial and temporal resolution. In this application we have considered a model domain of more than 5000 x 5000 km with 27 km of spatial resolution, centered over Madrid city (Spain) and covering a substantial part of the North of Africa and most of the Western European region. We have used the 5-10, August, 2003 period where maximum ozone values reach around 300 gm where observed in several air quality monitoring stations in Europe. This contribution analyzes the results of two meteorological models used and discusses the results according to available statistical tools. The results show that substantial meteorological differences between MM5 and WRF models lead to important differences in the pollution concentrations and also when comparing with the observations taken from 2965 air quality monitoring stations in the European AIRBASE system.
Publication Year: 2008
Publication Date: 2008-12-12
Language: en
Type: article
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