Figure 1

(a) The study region (also the domain of the regional model WRF-Chem), and the locations of observation sites used in the study. Correlation between the model and observations for the day-to-day variations in (b) AOD at 550 nm, and (c) PM2.5 during October-December 2016. Solid black line shows a 1:1 relation and dashed lines show an agreement within a factor of 2.