Fast method for calculating infrared spectral transmittances in the wings of absorption lines

Autor:	Michel Kruglanski, Martine De Mazière
Rok vydání:	2005
Předmět:	Physics Radiation Absorption spectroscopy Infrared business.industry Computation Infrared spectroscopy Atomic and Molecular Physics and Optics Optics Infrared window Line (geometry) Absorption (electromagnetic radiation) business Spectroscopy
Zdroj:	Journal of Quantitative Spectroscopy and Radiative Transfer. 94:117-125
ISSN:	0022-4073
DOI:	10.1016/j.jqsrt.2004.09.001
Popis:	When performing line-by-line simulations of atmospheric high-resolution infrared spectra, a large portion of the computation time is spent in the calculation of the absorptions by the far wings of the absorption lines. For applications in which one is interested mainly in evaluating the effective absorption in a microwindow, a computationally less expensive method has been developed. The method is faster than the explicit line-by-line calculation by a factor proportional to the number of line wings that contribute to the absorption in the simulated microwindow. This paper presents the method and demonstrates its performances in the 700– 1400 cm - 1 infrared band. Typically one obtains a gain in computation time of order 25.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::dada1af0e7d97f1c5ba482ed23f444d2 https://doi.org/10.1016/j.jqsrt.2004.09.001 Zobrazit plný text záznamu Full Text from ScienceDirect