OPTIKA ATMOSFERY I OKEANA JOURNAL
V.E. ZUEV INSTITUTE OF ATMOSPHERIC OPTICS
Vol. 16, issue 05-06, article # 26
pdf Zhuravleva T. B., Nasrtdinov I. M., Sakerin S. M. Numerical simulation of angular structure of the near-horizon sky brightness in ground-based observations. Part 1. The aerosol atmosphere. // Atmospheric and oceanic optics. 2003. V. 16. No. 05-06. P. 496-504.Copy the reference to clipboard
Abstract:
Calculations by the method of adjoint walks are used to study the effect of atmospheric sphericity and vertical stratification of aerosol optical characteristics on angular distribution of near-horizon clear-sky brightness in ground-based observations. It is shown that, for small aerosol optical depths and/or large solar zenith angles, the neglect of atmospheric sphericity may introduce up to 10% error in radiance calculations. The specific feature of near-horizon sky brightness is that it depends not only on the atmospheric optical depth, but also on aerosol extinction coefficient in the near-ground layer. To cope with this it is sufficient to use meteorological visibility as accurate as 50%.