Earth Planets Space, Vol. 50 (Nos. 6, 7), pp. 487-491, 1998
S. S. Hong1, S. M. Kwon2, Y.-S. Park3, and C. Park1
1Department of Astronomy, Seoul National University, Seoul, Korea
2Department of Science Education, Kangwon National University, Korea
3Korea Astronomy Observatory, Yusong-Ku, Daejon, Korea
(Received October 7, 1997; Revised February 24, 1998; Accepted February 27, 1998)
Abstract: To understand an observed distribution of atmospheric diffuse light (ADL) over an entire meridian, we have solved rigorously, with the quasi-diffusion method, the problem of radiative transfer in an anisotropically scattering spherical atmosphere of the earth. In addition to the integrated starlight and the zodiacal light we placed a narrow layer of airglow emission on top of the scattering earth atmosphere. The calculated distribution of the ADL brightness over zenith distance shows good agreement with the observed one. The agreement can be utilized in deriving the zodiacal light brightness at small solar elongations from the night sky brightness observed at large zenith distances.