Multi-decadal variation of the net downward shortwave radiation over south Asia: The solar dimming effect

► The net downward shortwave radiation over south Asia is used in this study for the period 1979-2004. ► The multi-decadal variation in the incoming solar radiation over the area is investigated. ► The solar dimming effect seems to continue over south Asia with a trend of −0.54 W m−2 yr−1. ► The increase in cloud optical depth seems to play major role for the solar dimming effect over the area.