ANALYSIS OF TRANSMISSION CHARACTERISTICS AND POTENTIAL SOURCES OF AIR POLLUTANTS IN JIAYUGUAN

XIAO Kai; REN Xue-chang; CHEN Ren-hua

doi:10.13205/j.hjgc.202109014

Volume 39 Issue 9

Jan. 2022

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XIAO Kai, REN Xue-chang, CHEN Ren-hua. ANALYSIS OF TRANSMISSION CHARACTERISTICS AND POTENTIAL SOURCES OF AIR POLLUTANTS IN JIAYUGUAN[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(9): 92-101,109. doi: 10.13205/j.hjgc.202109014

Citation:

XIAO Kai, REN Xue-chang, CHEN Ren-hua. ANALYSIS OF TRANSMISSION CHARACTERISTICS AND POTENTIAL SOURCES OF AIR POLLUTANTS IN JIAYUGUAN[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(9): 92-101,109. doi: 10.13205/j.hjgc.202109014

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ANALYSIS OF TRANSMISSION CHARACTERISTICS AND POTENTIAL SOURCES OF AIR POLLUTANTS IN JIAYUGUAN

doi: 10.13205/j.hjgc.202109014

College of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China

Received Date: 2020-10-11
Available Online: 2022-01-21

Abstract

Abstract

Use the Trajstat plug-in in the Meteoinfo software to simulate the backward trajectory of the air masses arriving in Jiayuguan City from March 2019 to February 2020, and combine the data of various air pollutants to perform a cluster analysis of the backward trajectory of Jiayuguan City in the four seasons. In this way, we studied the main air masses transportation path and the pollutant concentration characteristics of the corresponding path to Jiayuguan City. The potential source contribution function (PSCF) and concentration weighted trajectory (CWT) were used to analyze the impact of pollutant transportation sources and main potential source areas and the transmission of air pollutants on air quality in Jiayuguan City. Among the air masses transported into Jiayuguan City, the number of air mass trajectories in the northwest and the percentage of pollution trajectories were larger than those in the other directions. The air pollution in Jiayuguan City in four seasons was more susceptible to the influence of air masses in the northwest. Jiayuguan City had relatively serious PM₁₀ pollution in spring and was more susceptible to potential source areas in eastern Xinjiang, and PM₁₀ pollution in other seasons was relatively light. The potential source areas were mainly concentrated in eastern Xinjiang, with a few located in the northeast of Jiayuguan City. The O₃ pollution in Jiayuguan City in spring and summer was relatively serious. The strong potential source areas were mainly concentrated in eastern Xinjiang and the Hexi Corridor area of Gansu. The O₃ pollution in autumn and winter was relatively light. The potential source area in autumn was mainly located in the Hexi Corridor area of Gansu, and the potential source area in winter was mainly located in eastern Xinjiang.
- air pollution,
- backward trajectory,
- cluster analysis,
- potential source area analysis,
- Jiayuguan

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References(43)

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