Numerical simulation and analysis of characteristics of atmospheric diffusion in coastal area of a site

International Symposium on Resource Exploration and Environmental Science

地球科学;生态环境科学

Yang, Zongzhen^1 ; Zhang, Xiaofeng^1 ; Bao, Xinjie^1 ; Chen, Shuyang^2

Suzhou Nuclear Power Research Institute, Suzhou, China^1

Suzhou Meteorological Bureau, Suzhou, China^2

关键词: Atmospheric diffusion;    Atmospheric dispersion;    Numerical simulation experiment;    Random walk modeling;    Random walk simulation;    Simulation and analysis;    Synoptic-scale systems;    Weather research and forecasting models;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/64/1/012063/pdf
DOI  :  10.1088/1755-1315/64/1/012063

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

A Weather Research and Forecasting Model (WRF) and random walk model have been used to numerical simulate and analysis the characteristics of meso-micro scale wind field and atmospheric diffusion in coastal area of a sit. The results indicated that the atmospheric dispersion in this area is determined both by synoptic scale system and land-sea breeze circulation. Spatial variation of wind field is not obvious in synoptic scale system situation, which leads to the straight dispersion plume. Temporal variation of wind field, particularly the wind direction transition caused by transient of land-sea breezes is obvious. The method of random walk simulation better reflects the characteristics of the air pollutants transportation and diffusion. The atmospheric diffusion parameters obtained with numerical simulation experiment may reflect well the characteristics of the air diffusion in local area.