Influence of Water Vapor and Aerosol on the Integral Transparency of the Atmosphere

G. M. Abakumova and E. V. Gorbarenko

The temporal variability of the total atmospheric water content W and the connection of the coefficient of integral transparency P2, reduced to the air mass m = 2, with W and aerosol optical depth τ a , λ0 at a wavelength of 550 nm were analyzed and studied from the observational data of the Meteorological Observatory of Moscow State University for 50 years (1955–2004). The regression equations between mean daily and monthly τ a , λ0 and τ2 = –ln P2 were derived in different months and seasons and can be used for retrieving τ a , λ0 from the coefficient of the integral transparency for the temperate latitudes. The P2 intervals are given for which these equations can be used.