The available model data on the mean albedo and spectral irradiance of the
Moon by the Sun in the UV region of the spectrum are generalized. Model dat
a on the mean radiance of the Moon over the entire area of the lunar disk a
re considered. The possible causes of the variations of the spectral energy
characteristics of the lunar UV radiation are discussed. A comparison of t
he model data with experimental data is made. (C) 2000 The Optical Society
of America. [S1070-9762(00)00301-8].