Dynamics and Physics of Bodies of the Solar System Russian On the basis of some data on spectral dependence of geometric albedo for the discs of Jupiter and Saturn, we determined the regularity in the change of the aerosol optical depth with altitude in the upper atmospheres, the relative concentration of methane (0.00125) for Jupiter’s atmosphere, the monochromatic absorption coefficients of methane (or the superposition of these coefficients for methane and ammonia) in the spectral region from λ 527 nm to λ 956 nm. planet atmosphere,Jupiter,Saturn,absorption coefficients of methane