Spatial Characteristics and Influence of Topography and Synoptic Systems on PM2.5 in the Eastern Monsoon Region of China
نویسندگان
چکیده
Based on the PM2.5 concentration in autumn and winter of 2015-2019, characteristics urban air pollution eastern monsoon region China were discussed. The spatial distribution interregional influence fine particle under different synoptic weather topography illustrated. According to systems, regional episodes classified into three categories, including Uniform Pressure field (UP, 60.00%), Pre-High (PreHP, 30.91%) Inverted-Trough (IT, 9.09%). K-Means algorithm combined with HYSPLIT backward trajectory clustering analysis indicated four clusters UP controlled, weak pressure was responsible for elevation concentration, where Beijing-Tianjin-Hebei its surrounding areas most polluted region. For PreHP, eased after cold front. IT, ascertained, severe area central southern North Plain. This study provided a scientific basis joint prevention based topographic meteorological Eastern China.
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ژورنال
عنوان ژورنال: Aerosol and Air Quality Research
سال: 2023
ISSN: ['2071-1409', '1680-8584']
DOI: https://doi.org/10.4209/aaqr.220393