Figure 4.
Spatial distribution of surface mass PM2.5 in (a) 2000, (b) 2010, and (c) 2020, and aerosol optical depth in (d) 2000, (e) 2010, and (f) 2020 in mainland Southeast Asia. (https://giovanni.gsfc.nasa.gov/giovanni, accessed on 16 June 2023).
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