Three-dimensional Distribution of PM2.5 Over the Yangtze River Delta as Cold Fronts Moving Through

The archived CNEMC dataset was downloaded from the data release platform of the China National Environmental Monitoring Center, which includes ground-based observations of PM2.5 concentration in 14 cities from September 2017 to Feburary 2018 and in 80 cities from October to November, 2017. The UAV PM2.5 concentration data was collected by Thermo Mie PDR-1500, which was carried by an unmanned aerial vehicle platform from the ground level to ~1000 m altitude in Nanjing, China. Observation time includes: 14:00 LT, 20:00 LT, 23:00 LT November 2, and 0500 LT, 14:00 LT, 20:00 LT November 3.