Spatiotemporal variations of the ultraviolet upward radiation of background formations in the Earth-atmosphere system

The results of measurements of the spatiotemporal variations of the anabati c UV radiation of background formations in the Earth-atmosphere system are discussed. The data were obtained during nadir observations on board the ar tificial Earth satellite Meteor-3 using the BUFS-1 on-board UV spectrometer . The mean values obtained as a result of a statistical treatment of the ra w data and the densities of the log-normal probability distributions of the spectral radiance of the background radiation of the cloudless atmosphere, low cirrus clouds, and high cirrus clouds are considered. (C) 2000 The Opt ical Society of America.