http://arxiv.org/abs/2112.14487
We present an effective parameterization of molecular absorption of solar radiation in Venus atmosphere. It is addressed to general circulation modeling to accelerate radiative transfer calculations in spectral region 125 — 400 nm (25000 — 80000 cm -1 ). In F-UV and M-UV regions strong absorption of CO 2 enables to parameterize gaseous absorption with only two effective cross-sections. In N-UV region absorption of SO 2 and unknown UV absorber are parameterized with five effective cross-sections. Also for treatment of Rayleigh scattering and optical properties of Venus’ clouds seven effective spectral points are recommended. Parameterizations were validated by the original reference line-by-line Monte-Carlo radiative transfer model. The outcome of the validation shows the discrepancy in fluxes less than 3%. Thus, it takes only sevenfold solution of radiative transfer equations to appropriately describe solar fluxes and heating rates in the whole ultraviolet region.
B. Fomin and M. Razumovskiy
Thu, 30 Dec 21
65/71
Comments: 16 pages, 3 figures
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