Fine Particulate Matter and Ozone Pollution in the 18 Cities of the Sichuan Basin in Southwestern China: Model Performance and Characteristics

• DOI: 10.4209/aaqr.2019.05.0235
• Publication Date: 2019-08-07T04:32:17Z
• Authors: Xue Qiao; Hao Guo; Pengfei Wang; Ya Tang; Qi Ying; Xing Zhao; Wenye Deng; Hongliang Zhang
• Keywords: 550; Chongqing; 13. Climate action; 11. Sustainability; Air pollution; Spatio-temporal variations; 551; 01 natural sciences; Chengdu; 0105 earth and related environmental sciences

ABSTRACT The Sichuan Basin (SCB) is located in southwestern China and has a total population of 108.1 million across 18 cities, including the 2 largest in western China (Chengdu and Chongqing). As most air quality monitoring stations are located in urban areas, we simulated the PM2.5 (i.e., particulate matter with an aerodynamic diameter 70% of the days during winter and > 40% of the days during summer, respectively. Based on the aforementioned spatial patterns of the PM2.5 and O3 concentrations, and the wind directions within the basin, strictly controlling emissions originating in the SCB may greatly reduce PM2.5 and O3 concentrations within the basin.