气象因子对乌鲁木齐市一次重污染天气过程影响研究

Abstract

Abstract: Through hourly observation data of the air quality and meteorological factors,the characteristics of air quality and main meteorological factors for a typical air pollution process in Urumqi City,Xinjiang,China in the winter of 2015 were analyzed in detail. In the process of this pollution event, the wind speed was changed in the pattern from decrease to increase to decrease(with the mean wind speed of 0.9-2.5 m·s^-1). The wind direction was shifted from southeast to northeast to northwest to southwest and to northeast. The humidity was firstly increased and then decreased and increased again. The thickness of the atmospheric mixed layer was decreased and then increased and then decreased again. In addition, the correlation between wind speed, humidity and PM_2.5 mass concentration was also tested. There were a negative correlation between wind speed and PM_2.5 mass concentration and a positive correlation between humidity and PM_2.5 mass concentration. They all passed the correlation test of 0.01 significant level. It shows that the meteorological factors(wind speed) in Urumqi City have a very significant impact on the local air pollution.

Key words: meteorological factor, pollution, affect, Urumqi

CLC Number:

GE Huan-huan, WU Sheng-li, LV Ting, LI Jing-long, XIA shi-Shu, XIA Li. Influence of meteorological factors on the process of heavy pollution in Urumqi City[J].干旱区地理, 2018, 41(3): 601-607.

References

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Influence of meteorological factors on the process of heavy pollution in Urumqi City

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