Spatiotemporal variation in PM2.5 and Species over China: Analysis of meteorological and anthropogenic drivers
Abstract
The ubiquity of PM2.5 (particulate matter with aerodynamic diameter ≤ 2.5 µm), a complex heterogeneous compound pollutant whose dominant composition (sulphate, nitrate, ammonium, organic carbon and elemental carbon) are associated with pernicious health and environmental outcomes in China have gained attention globally. Detailed data on chemical composition across the country remains scarce despite concerted efforts made in recent years. To address this, we collated nationwide field measurements of PM2.5 and major chemical species between 2010 and 2018 from published literature. We investigated the interaction effects of meteorological and anthropogenic covariates on PM2.5 and major chemical species pollution across China. Our findings revealed the relationships between PM2.5 constituents and the different combination levels of drivers and suggest the possible ways to reduce concentration levels via precursors control scenarios in different seasons. We conclude that different combination multipollutant control strategies may be needed to achieve the targeted national ambient quality standard of 35 μg/m3 across China.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2020
- Bibcode:
- 2020AGUFMA150.0020A
- Keywords:
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- 0345 Pollution: urban and regional;
- ATMOSPHERIC COMPOSITION AND STRUCTURE;
- 0365 Troposphere: composition and chemistry;
- ATMOSPHERIC COMPOSITION AND STRUCTURE;
- 0394 Instruments and techniques;
- ATMOSPHERIC COMPOSITION AND STRUCTURE;
- 3355 Regional modeling;
- ATMOSPHERIC PROCESSES