Vol. 11, issue 04, article # 18

Firsov K.M., Chesnokova T.Yu. A new method of treating overlapping absorption bands of atmospheric gases in radiative transfer parameterization. // Atmospheric and oceanic optics. 1998. V. 11. No. 04. P. 356-360.
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Abstract:

A method of longwave radiative transfer parameterization for the Earth's atmosphere is described. Spectral line parameters are used to calculate characteristics of molecular absorption. The k-distribution technique is shown to provide uncertain calculation of the frequency dependence of the transformed coefficient of molecular absorption. So, a phenomenological scheme has been constructed to treat overlapping gas absorption bands, which ensures higher level of parameterization of transmission functions than traditional techniques can provide. In comparison with line-by-line (LBL) techniques, this method calculates the transmission functions along any atmospheric path with an accuracy better than 1-2%.

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