利用数值模式和示踪试验确定某厂址地区大气扩散参数

Abstract

Abstract: A Weather Research and Forecasting Model (WRF) and atmospheric diffusion model (CALPUFF) have been used to numerically simulate and analyze the atmospheric diffusion parameters in coastal area of a site. Compared with the results of atmospheric tracer test, whether from value range or from distribution of diffusion factor, CALPUFF diffusion model can better reflect the local atmospheric diffusion characteristics. Compared with P-G diffusion parameters, atmospheric diffusion parameters obtained from CALPUFF model are more consistent with the general law of atmospheric diffusion. In consideration of the actual underlying surface and flow field characteristics of the site, the diffusion parameters determined by the CALPUFF numerical model which are larger than the P-G diffusion parameters and smaller than the IAEA diffusion, can more truly reflect the diffusion capacity of pollutants in the area.

Key words: diffusion parameters, numerical simulation, tracer test, WRF, CALPUFF

CLC Number:

X169

YANG Zongzhen, BAO Xinjie, TAO Naigui, ZHANG Xiaofeng. Determining the atmospheric diffusion parameters in a site using numerical simulation and tracer test[J].RADIATION PROTECTION, 2022, 42(1): 25-33.

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Determining the atmospheric diffusion parameters in a site using numerical simulation and tracer test

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