Modeling of the atmospheric transmission of UV radiation with use of different data on water vapor absorption lines

Abstract

The atmospheric transmission of UV radiation was simulated with use of new data on H2O absorption lines in the 0.25- 0.4 μm spectral region. The transmittance spectra were calculated with the most complete H2O line list POKAZATEL, its new modification in 2020 by Conway et al, refined databank W2020, and new version of popular spectroscopic database HITRAN2020, in which the H2O lines were added in the UV region. The intercomparison of the spectra was made. The water vapor contribution to the atmospheric transfer of solar radiation in the UV region was estimated. The radiative transfer was modeled with taking into account of aerosol and Rayleigh multiple scattering and absorption.