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- W2955436974 abstract "PM2.5 is one of the most notorious ambient pollutants in the Pearl River Delta (PRD) region during episodic conditions. In this work, the Comprehensive Air Quality Model with extension (CAMx) was used together with the Particulate Source Apportionment Technology (PSAT) module to analyze the influences of different sources on PM2.5 concentration in the PRD region under different synoptic patterns (sea high pressure, sub-tropical high pressure and equalizing pressure field). The result shows that the PM2.5 concentration increases to different degrees under the three synoptic patterns. The emissions outside the PRD region contribute more than 54% under episodic conditions. The source category contribution varies little under different synoptic patterns. Area (46%), mobile (21%) and industry point source (16%) are the major contributors over the three episodic cases. The regional source contributions (from other cities within the PRD) to Foshan, Zhongshan and Zhaoqing are larger and can reach up to 33%. People living in the PRD region are more exposed to pollutants produced from the area and mobile sources. About 80% of the population is exposed to PM2.5 levels exceeding the IT-3 standard during the pollution episodes." @default.
- W2955436974 created "2019-07-12" @default.
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- W2955436974 date "2019-12-01" @default.
- W2955436974 modified "2023-09-30" @default.
- W2955436974 title "Source and exposure apportionments of ambient PM2.5 under different synoptic patterns in the Pearl River Delta region" @default.
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- W2955436974 doi "https://doi.org/10.1016/j.chemosphere.2019.06.236" @default.
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