Radiation Effects of Different Types of Aerosol in Eurasia According to Observations and Model Calculations

Abstract

Radiation effects for different types of aerosol on the territory of Eurasia are estimated using modern aerosol climatologies Tegen and MACv2. Differences in the optical properties of aerosol in the mentioned climatologies in different natural zones as compared to the AERONET ground-based observation network are revealed. It is shown that aerosol climatologies reproduce annual variations with good accuracy for continental and mineral aerosol. Differences in the MACv2 are smaller on average than in the Tegen. The CLIRAD(FC05)-SW radiation algorithm was applied to calculate the values of total shortwave radiation using different aerosol climatologies. The errors of calculations are estimated for the selected observation stations. The deviation of the calculation results from measurement data does not exceed 25 W/m². The COSMO-Ru mesoscale model is used to analyze the sensitivity of surface air temperature prediction to radiation aerosol effects which varies in the range of 0.7–1.1 °C per 100 W/m² for different aerosol types.