ИСТИНА

The influence of various parametrizations of aerosol-cloud-interaction on the global solar irradiance and cloud transmittance at the earth's surface was analyzed according to the Russian INMCM5 model (Volodin et al., 2017) with the aerosol module described in (Volodin and Kostrykin, 2016). Several 10year numerical experiments were carried out with different parametrizations and without their application. We showed that the account for the aerosol-cloud interaction led to an increase in cloud amount by an average of 0.1 and a decrease in the global irradiance by 25 W/m2. In addition, we estimated the changes in global solar irradiance and cloud transmittance due to different emissions of aerosol precursors for 1980 and for 2005. Numerical experiments revealed that at lower emissions rates a decrease in cloud transmittance was observed. We discussed the probable causes of the observed effect