8 February 2001 Atmospheric transmission model development with Fourier-transformed Voigt profile
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Abstract
Author developed a line-by-line atmospheric transmission model based on the Fourier transformed Voigt function. The Voigt function is presented in an integrated form, and direct computation of the function profiles involves a high computational cost because of its numerical characteristics which introduces slow numerical convergency at some area. Many investigations were performed using the polynomial- fitting-to-the-function method to reduce this computation cost. Author introduced a Fourier transformed Voigt function, and developed a line-by-line transmission model for multiple species and lines. In this model, all line-by- line calculations are done in the numerical space which will be Fourier transformed to the wavenumber space a the end of a process. The developed algorithm uses no approximation method for line shape calculation, and has no limitations for the wavenumber resolution and the wavenumber range. Furthermore, the algorithm represents randomly positioned absorption lines by the uniform method and requires no line shapes mapping into the wavenumber space. The model indicates a straight forward implementation procedure of the high-resolution radiation/transmission calculation with huge absorption liens. Author implemented the model on a parallel computing environment and verified that the model calculation performance can be expanded with increasing the number of computing nodes.
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Hirokazu Kobayashi, Hirokazu Kobayashi, } "Atmospheric transmission model development with Fourier-transformed Voigt profile", Proc. SPIE 4151, Hyperspectral Remote Sensing of the Land and Atmosphere, (8 February 2001); doi: 10.1117/12.417019; https://doi.org/10.1117/12.417019
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