估算模式AERSCREEN的参数敏感性研究

doi:10.3969/j.issn.1673-503X.2019.06.016

Abstract

Abstract: The AERSCREEN estimation model recommended in the "Guidelines for Environmental Impact Assessment of Atmospheric Environment" (HJ2.2-2018) had improved concerning the processing of meteorological and topographic data,as well as the downwash of buildings.The sensitivity test of maximum landing concentration under different emission parameters and meteorological conditions was carried out using the estimation model AERSCREEN,especially for the point sources at a height of 30 m.The results show that the maximum surface concentration decreases gradually with the increasing velocity of the flue gas outlet.The maximum surface concentration does not change obviously with the variation of the Bowen ratio.With the increased roughness of ground and temperature of flue gas outlet,the maximum ground concentration decreases gradually.When the temperature of flue gas is about 75℃ and the roughness is 1.3 m,the surface concentration reaches the minimum.With increased albedo and chimney height,the maximum ground concentration decreases gradually.Under different chimney heights,the maximum ground concentration increases with the maximum ambient temperature.Under different ambient temperatures,the maximum ground concentration decreases with the increasing chimney height,which indicates that the increase of the maximum ambient temperature will reduce the maximum ground concentration.In this model,the maximum ground concentration does not change with the increase of the lowest ambient temperature.With the increased minimum wind speed,the maximum surface concentration obtained from the simulation will gradually decrease.

Key words: Atmospheric estimation model, AERSCREEN, Parameter sensitivity

CLC Number:

YANG Hong-bin, ZHANG Yun-hai, LI Ke-fei, CHEN Gang, ZOU Xu-dong, WANG Hong-yu, LIU Yu-che. Sensitivity analysis on the parameters of model AERSCREEN[J]. Journal of Meteorology and Environment, 2019, 35(6): 126-131.

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Sensitivity analysis on the parameters of model AERSCREEN

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