Application of the spectrally integrated Voigt function to line-by-line radiative transfer modelling

被引：13

作者：

Quine, B. M. ^{[1
,2
]}

Abrarov, S. M. ^{[1
]}

机构：

[1] Dept Earth & Space Sci & Engn, 4700 Keele St, Toronto, ON M3J 1P3, Canada

[2] Dept Phys & Astron, 4700 Keele St, Toronto, ON M3J 1P3, Canada

来源：

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER | 2013年 / 127卷

关键词：

Radiance; Spectral radiance; Spectrally integrated Voigt function; Line-by-line radiative transfer model; Spectral line broadening; IMPLEMENTATION; APPROXIMATIONS; TRANSMITTANCE; COMPUTATION; ALGORITHM; SERIES;

D O I：

10.1016/j.jqsrt.2013.04.020

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We show that a new approach based on the spectrally integrated Voigt function (SIVF) enables the computation of line-by-line (LBL) radiative transfer at reduced spectral resolution without loss of accuracy. The algorithm provides rapid and accurate computation of area under the Voigt function in a way that preserves spectral radiance and, consequently, radiant intensity. The error analysis we provide shows the high-accuracy of the proposed SIVF approximations. A comparison of the performance of the method with that of the traditional LBL approach is presented. Motivations for the use and advantage of the SIVF as a replacement for conventional line function computations in radiative transfer are discussed. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：37 / 48

页数：12

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