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The solution of radiative transfer problems in molecular bands without the LTE assumption by accelerated lambda iteration methodsAn iterative method based on the use of approximate transfer operators, which was designed initially to solve multilevel NLTE line formation problems in stellar atmospheres, is adapted and applied to the solution of the NLTE molecular band radiative transfer in planetary atmospheres. The matrices to be constructed and inverted are much smaller than those used in the traditional Curtis matrix technique, which makes possible the treatment of more realistic problems using relatively small computers. This technique converges much more rapidly than straightforward iteration between the transfer equation and the equations of statistical equilibrium. A test application of this new technique to the solution of NLTE radiative transfer problems for optically thick and thin bands (the 4.3 micron CO2 band in the Venusian atmosphere and the 4.7 and 2.3 micron CO bands in the earth's atmosphere) is described.
Document ID
19920033597
Document Type
Reprint (Version printed in journal)
Authors
Kutepov, A. A. (Muenchen, Universitaet Munich; Institut fuer Meteorologie und Klimaforschung, Karlsruhe; Max-Planck-Institut fuer Physik un, United States)
Kunze, D. (Muenchen, Universitaet Munich, Federal Republic of Germany, United States)
Hummer, D. G. (Joint Institute for Laboratory Astrophysics Boulder, CO, United States)
Rybicki, G. B. (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Date Acquired
August 15, 2013
Publication Date
November 1, 1991
Publication Information
Publication: Journal of Quantitative Spectroscopy and Radiative Transfer
Volume: 46
ISSN: 0022-4073
Subject Category
ATOMIC AND MOLECULAR PHYSICS
Funding Number(s)
CONTRACT_GRANT: NAGW-766
CONTRACT_GRANT: DFG-KU-474/13-2
CONTRACT_GRANT: NSF AST-88-02937
Distribution Limits
Public
Copyright
Other