Abstract: Shortwave radiation fluxes on the ground at four stations in Beijing are calculated using the second Sun-Edward-Slingo radiative transfer (SES2) model and cloud and vapor data from European Centre for Medium-Range Weather Forecasts reanalysis dataset (ECMWF-thin) with 0.125°×0.125° spatial resolution from January 2013 to October 2015. And impacts of aerosol on surface radiation on synoptic scale in clear-sky and cloudy days in the urban and suburb of Beijing are respectively analyzed based on the difference between the modeled global horizontal irradiances (GHI) with the inclusion of cloud and vapor and the corresponding observations. Spatial-temporal variation characteristics of quantificational aerosol radiative effects on the synoptic scale in the urban (polluted area) and at Shangdianzi Regional Background Station (clean area) are preliminarily studied in different haze pollution episodes. Quantitative models between deduction ratios of GHI caused by aerosol and PM₁₀ and PM_2.5 concentrations in the urban and suburb of Beijing are established. Results show that aerosol radiative effects on the synoptic scale in the urban are about twice of that at Shangdianzi Station, and those in south and west are larger than other areas. GHI reductions caused by aerosol fall in 146.23-180.99 W·m^-2 in clear-sky days and 202.11-217.02 W·m^-2 in cloudy days, and differences of GHI deduction in different districts in clear sky are larger than those in cloudy days. Aerosol radiative effects on the synoptic scale in autumn and winter when concentrations of PM₁₀ and PM_2.5 are higher in the same period are obviously lager than those in spring and summer. Reduction ratios of GHI in southern suburbs of Beijing in autumn and winter are 10%-20% higher than those in spring and summer during 2013-2015. Linear relationship between reduction ratios of GHI and direct radiation (DIR) and AOD in the urban and suburb of Beijing are found and impacts of AOD on DIR are larger than GHI, especially in the urban with heavy haze. Additionally, impacts of PM_2.5 concentration on GHI and DIR cannot be ignored. Results above have certain scientific and practical application values for better understanding the interaction between aerosol and meteorological conditions such as solar radiation, and improvements of refined assessments and forecasts of solar energy resources.