Transport Characteristics and Potential Source Areas of PM 2.5 in Yangquan City Under Different Pollution Levels

Based on the PM monitoring data, NCEP data, and the meteorological data of the weather situation analysis at the corresponding time in Yangquan City from 2020 to 2022, using the HYSPLIT4 backward trajectory model, multi-station potential source contribution factor analysis （MS-PSCF） and trajectory d...

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Bibliographic Details
Published inHuanjing kexue Vol. 45; no. 7; p. 3858
Main Authors Ma, Xing-Fen, Wang, Yan, Yan, Shi-Ming, Feng, Fei
Format Journal Article
LanguageChinese
Published China 08.07.2024
Subjects
different pollution levels
PM2.5
trajectory density analysis （TDA）
characteristics of weather situation
multi-site potential source contribution factor analysis （MS-PSCF）
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Summary:Based on the PM monitoring data, NCEP data, and the meteorological data of the weather situation analysis at the corresponding time in Yangquan City from 2020 to 2022, using the HYSPLIT4 backward trajectory model, multi-station potential source contribution factor analysis （MS-PSCF） and trajectory density analysis （TDA） were introduced to study the differentiation and classification of PM transport channels and potential sources in Yangquan City. The results showed that： ① The PM pollution in Yangquan was mainly concentrated in Yangquan and Pingding, whereas the pollution in Yuxian was relatively light. The proportion of days with different pollution levels and the average and maximum values of PM concentration in Yangquan and Pingding were significantly higher than those in Yuxian, and the distribution characteristics of PM were closely related to the local special terrain. ② The amount of PM pollution and the concentration of PM in different pollution levels were the highest in light wind weather. The influ
ISSN:0250-3301