Probable causes of long-period variations in the Uranian geometrical albedo |
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| Authors: | N M Kostogryz |
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| Institution: | (1) Main Astronomical Observatory, National Academy of Sciences of Ukraine, vul. Akademika Zabolotnoho 27, Kyiv, 03680, Ukraine |
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| Abstract: | We use the technique developed in our previous studies to determine the ratios of optical depth components τ a /τ R and τκ/τ S on the basis of the observational data on the Uranian geometrical albedo for the years 1981, 1993, and 1995. Here τ a and τ R are the aerosol and gas scattering components, τ S = τ a + τ R , and τκ is the absorption component of the effective optical depth at which the intensity of the diffusely reflected radiation is formed. The ratios turn out to be different for different years. This phenomenon is caused by the horizontal inhomogeneity of the aerosol component distribution over the Uranian disk. |
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