Aerosol optical and radiative properties, measured with the ground based sun-sky radiometer (under AERONET), were explored at Kanpur in the central and Gandhi College (Ballia) in the Eastern Indo-Gangetic Plain (IGP) in Northern India during January to July 2019 (non-lockdown) and 2020 (lockdown). This year 2020 is marked an overall reduction of 15.79% and 3.39% in aerosol optical depth (AOD) than year 2019 at Kanpur and Gandhi College respectively. Lockdown 1 (23rd March to 14th April 2020) showed a reduction of 52.52% and 42.22% in AOD compared to pre-lockdown condition at Kanpur and Gandhi College respectively. Higher values of angstrom exponent measured at Eastern region (1.13 ± 0.17) than central region (0.97 ± 0.26) indicating the dominance of fine particles at Gandhi College. There was an overall reduction of 1.31% in single scattering albedo (SSA) at Kanpur while 4.34% reduction was observed at Gandhi College in year 2020 than 2019. The resultant atmospheric forcing and heating rate shows 11.86% reduction at Kanpur while 35.27% increase at Gandhi College during the lockdown period in 2020 compared to 2019. However, these values were found to decrease by 23.48% and 15.07% at Kanpur and Gandhi College respectively during the strict lockdown period compared to year 2019.

1月至7月，在印度中部东部恒河恒河平原（IGP）的中部坎普尔（Kanpur）和印度北部恒河恒河平原（IGP）的甘地学院（Ballia）探索了用地面日光辐射计（在AERONET下）测量的气溶胶光学和辐射特性。 2019年（非锁定）和2020年（锁定）。到2020年，坎普尔和甘地学院的气溶胶光学深度（AOD）分别比2019年减少了15.79％和3.39％。锁定1（2020年3月23日至4月14日）显示，与坎普尔大学和甘地学院的锁定前情况相比，AOD分别降低了52.52％和42.22％。在东部地区（1.13±0.17）测得的埃指数值高于中心区域（0.97±0.26），表明甘地学院的细颗粒占主导地位。总体减少了1。