Key Messages

• PM2.5/PM10 ratio characteristics over India using multi-site and multi-year data.

• Suppressed PM2.5/PM10 ratio variations compared to that observed in PM concentrations.

• MERRA-2 derived PM2.5/PM10 ratio found to be overestimating during colder months.

• Weak relationship between the PM2.5/PM10 ratio and meteorological parameters.



(*B. Spandana, S. Srinivasa Rao, and Adithi R. Upadhya are the other authors of this paper.)

PM2.5/PM10 ratio characteristics over urban sites of India