Vol. 14, issue 09, article # 5

Firsov K. M., Chesnokova T. Yu., Belov V. V., Serebrennikov A. B., Ponomarev Yu. N. Use of k-distribution method for solution of shortwave radiative transfer equation in a spatially inhomogeneous atmosphere. // Atmospheric and oceanic optics. 2001. V. 14. No. 09. P. 707-711. PDF
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We describe an approach to treatment of molecular absorption in solving, by use of the Monte Carlo method, the radiation transfer equation for the case of spatially inhomogeneous aerosol-gaseous media. The approach is based on expansion of the broadband transmission function in an exponential series. Theoretical and numerical analysis has been performed to check the applicability of the expansion in exponential series for spatially inhomogeneous atmospheres. The numerical simulation performed showed high efficiency of this method, because thus obtained results are close within 0.2% accuracy to the results calculated using line-by-line technique while consuming 350 times shorter computer time.