The Use of a Mesoscale Modeling System Together with Surface and Upper Observational Data to Estimate Hourly Benzene Impacts in a Mountainous Coastal Area
AIR POLLUTION MODELING AND ITS APPLICATION XXIII(2014)
摘要
An application of the CALPUFF modeling system in the near-field in an area of very-complex topography is presented. Different configurations for both the meteorological and the dispersion simulations were tested. The RAMS high-resolution (1 km) output as well as the data from a network of surface stations and the high-resolution data from a wind profiler radar (WPR) located in the area were available for assimilation and validation purposes. The 250 m resolution threedimensional CALMET meteorological fields, after being validated against surface and upper air data, were fed into CALPUFF to simulate the potential impacts of the emissions of a coke factory over a nearby urban area. Benzene was used as a tracer of the emitted pollutants. The results of the dispersion simulations were compared against the available hourly benzene records. Our results showed that, no matter the selected synoptic forcing for RAMS (NCEP/ECMWF), the assimilation of meteorological data into CALMET is necessary for a correct representation of the wind flows in the area, and as a consequence, for a correct representation of the actual benzene impacts.
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关键词
Simulated Wind, Gaussian Plume Model, Dispersion Simulation, Benzene Level, Wind Profiler Radar
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