Abstract

A simple and computationally efficient model is developed for calculation of slant path atmospheric transmittances in the microwave and millimeter spectral regions. The model deals simultaneously with absorption by oxygen and water vapor. Its accuracy is assessed for a range of atmospheric conditions for spectral intervals corresponding to the channels of the Advanced Microwave Sounding Unit. The model is found to be very accurate (≤0.001 error in transmittance) where water vapor absorption is weak. It is less accurate (~0.02 error in transmittance) at frequencies of strong water vapor absorption but should be adequate for most tropospheric sounding applications.

© 1988 Optical Society of America

Atmospheric transmittance of an absorbing gas. 4. OPTRAN: a computationally fast and accurate transmittance model for absorbing gases with fixed and with variable mixing ratios at variable viewing angles

L. M. McMillin, L. J. Crone, M. D. Goldberg, and T. J. Kleespies
Appl. Opt. 34(27) 6269-6274 (1995)

Atmospheric transmittance of an absorbing gas. 3: A computationally fast and accurate transmittance model for absorbing gases with variable mixing ratios

Larry M. McMillin, Hernry E. Fleming, and Michael L. Hill
Appl. Opt. 18(10) 1600-1606 (1979)

Atmospheric transmittance of an absorbing gas: a computationally fast and accurate transmittance model for absorbing gases with constant mixing ratios in inhomogeneous atmospheres

Larry M. McMillin and Henry E. Fleming
Appl. Opt. 15(2) 358-363 (1976)

Fast radiative transfer model for simulation of infrared atmospheric sounding interferometer radiances

Marco Matricardi and Roger Saunders
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Fast transmittance model for satellite sounding

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