Statistics – Computation
Scientific paper
Aug 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jgr....9713051q&link_type=abstract
Journal of Geophysical Research, Vol. 97, No. D12, p. 13051 - 13058
Statistics
Computation
Scientific paper
A three-parameter scaling approximation is developed in conjunction with random models for the computation of transmittance along nonhomogeneous atmospheres. In addition to the scaled path length and pressure, a third parameter is introduced to account for intermediate absorption. With reference to the results derived from line-by-line calculations, the authors assess the accuracy of this scaling approximation in different atmospheric conditions. For the O3 9.6-μm band where the Curtis-Godson and other conventional scaling methods usually produce large errors, the present model can achieve relative accuracies within ≡1% in transmittance and the downward surface flux. Accuracy of ≡0.15 K/d can be obtained in cooling rate calculations. The present three-parameter approximation is well suited for radiative transfer parameterizations in which the demand for high accuracy is required in the transmittance and flux calculations.
Liou Kuo-Nan
Qiang Fu
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