Articles | Volume 23, issue 7
Research article
12 Apr 2023
Research article |  | 12 Apr 2023

Coarse particulate matter air quality in East Asia: implications for fine particulate nitrate

Shixian Zhai, Daniel J. Jacob, Drew C. Pendergrass, Nadia K. Colombi, Viral Shah, Laura Hyesung Yang, Qiang Zhang, Shuxiao Wang, Hwajin Kim, Yele Sun, Jin-Soo Choi, Jin-Soo Park, Gan Luo, Fangqun Yu, Jung-Hun Woo, Younha Kim, Jack E. Dibb, Taehyoung Lee, Jin-Seok Han, Bruce E. Anderson, Ke Li, and Hong Liao

Data sets

PM10 and PM2.5 dataset in China MEE - Ministry of Ecology and Environment

PM10 and PM2.5 dataset in South Korea KEC - Korea Environment Corporation

Airborne Science Data for Atmospheric Composition NASA - National Aeronautics and Space Administration

Short summary
Anthropogenic fugitive dust in East Asia not only causes severe coarse particulate matter air pollution problems, but also affects fine particulate nitrate. Due to emission control efforts, coarse PM decreased steadily. We find that the decrease of coarse PM is a major driver for a lack of decrease of fine particulate nitrate, as it allows more nitric acid to form fine particulate nitrate. The continuing decrease of coarse PM requires more stringent ammonia and nitrogen oxides emission controls.
Final-revised paper