Abstract:Based on U.S. wind erosion prediction system (WEPS), secondary development of this model was done in order to estimate the effect of wind-blown dust came from suburban on air quality of central district. The database files of blocks were localized, including wind file, climate file, soil file and management file. The dust flux of each dusting block was estimated, including creep and saltation fluxes, suspension fluxes and PM10 fluxes. In 2009, the maximum emission fluxes per block and emission fluxes occurred in winter. In winter, the creep and saltation fluxes, suspension fluxes and PM10 fluxes pointing to central district were the most comparing to other seasons. In spring, emission fluxes mainly came from east, in summer, mainly came from west; in autumn, mainly came from west, and in winter, mainly came from north. In 2009, PM10 fluxes came from north was 9.67′104t, and accouted for 81.7% in winter. So, PM10 came from northern suburban districts in winter affected deeply on the air quality of central district.
陈莉, 李涛, 韩婷婷, 姬亚芹, 白志鹏, 王斌. WEPS模型下天津郊区风蚀尘对城区空气质量的影响[J]. 中国环境科学, 2012, 32(8): 1353-1360.
CHEN Li, LI Tao, HAN Ting-Ting, JI Ya-Qin, BAI Zhi-Peng, WANG Bin. Effect of wind-blown dust derived from Tianjin suburban on air quality of central district based on WEPS model. CHINA ENVIRONMENTAL SCIENCECE, 2012, 32(8): 1353-1360.