Application of an extended ESFT method to calculation of solar heating rates by water vapor absorption |
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| Institution: | 1. Department of Atmospheric Sciences, Texas A&M University, College Station, TX 77845, USA;2. Laboratory for Atmospheric & Space Physics, University of Colorado Boulder, Boulder, CO 80303, USA;3. Earth Sciences Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA;4. NASA Langley Research Center, Hampton, VA 23681, USA;5. University of Maryland, College Park, MD 20740, USA;1. USRA GESTAR, 7178 Columbia Gateway Drive, Columbia, MD 21046, USA;2. NASA GSFC, 8800 Greenbelt Rd., Greenbelt, MD 20771, USA |
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| Abstract: | A new method for the exponential-sum fitting of transmissions (ESFT) is developed. We determine a set of equivalent absorption coefficients by a successive correction technique with a set of weights preselected empirically or absorptions coefficients by a successive correction technique with a set of applied to transmission functions of water vapor bands in the near i.r. region deduced from the AFGL absorption-line parameters. Numerical values of the ESFT parameters are presented for each of the water vapor bands and for the one-band parameterization for total absorption. Solar radiative heating rates computed from the present ESFT parameters are compared with those in the literature, as well as with the exact values of Chou J. Chim. Appl. Met. 25, 1532 (1986)]. The accuracy and utility of our method are demonstrated. |
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