Characteristic of the Concentration and Distribution of PM10,PM2.5 and PM1.0 in Urumqi
Through the analysis of GRIMM180 gathered PM10, PM2.5 and PM1.0 in Urumqi, the result showed: the aerosol mass concentration in Urumqi rapidly increased after the heating season beginning, the content of fine particles is the highest, PM2.5/PM10 can reach 77.6%, PM2.5/PM10, PM1.0/PM10, PM1.0/PM2.5 represent the particle distribution, the more serious the pollution was, the higher the content of fine particles was in four seasons. In the non precipatation day, the diurnal variation curves of mass concentration and distribution of PM10, PM2.5 and PM1.0 basically show the pattern of “3 peak-3 valley”in four seasons, the peak value appeared at “morning-noon-evening”, and the valley values occurred at “after morning-afternoon-after midnight”. Due to the influences of temperature inversion and other factors in the winter, the mass concentration and distribution showed another two “peak-valley”based on the “3 peak-3 valley”pattern. The occurrence of precipation had greater influences on the particulate matter mass concentration in winter and spring than that in summer and autumn, and had different influences on the distribution of different diameter particles.
国家科技期刊平台
NSTL
万方数据
维普
