PARAMETERIZATION OF THE RADIATIVE FLUX DIVERGENCE IN THE 15 ΜM CO2 BAND IN THE 30-75 KM LAYER. / Akmaev, R.A.; Shved, G.M.
In: Journal of Atmospheric and Terrestrial Physics, No. 11, 1982, p. 993-1004.Research output: Contribution to journal › Article
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TY - JOUR
T1 - PARAMETERIZATION OF THE RADIATIVE FLUX DIVERGENCE IN THE 15 ΜM CO2 BAND IN THE 30-75 KM LAYER
AU - Akmaev, R.A.
AU - Shved, G.M.
PY - 1982
Y1 - 1982
N2 - A parameterization of the cooling rate of the earth’s middle atmosphere due to radiation transfer in the 15 μm CO2 band is proposed. The parameterization has been performed for such an atmospheric layer with local thermodynamic equilibrium (below approximately 75 km), for which in the major part of the frequency interval occupied by the 15 μm band the approximation of non-overlapping lines (above about 30 km) is justified. The overlap of lines has only been taken account of for superposed strong Q-branches at the centre of the 15 μm band. The parameterization takes into account the peculiar features of radiation transfer: 1. (1) the height step increases with the growing distance from the level, for which cooling is calculated; 2. (2) the dependence of line intensity on temperature has partially been taken account of in an explicit form. The procedure proposed is multiparametric: 42 parameters are prescribed for calculating cooling at a given level. With an error less than 0.5 K day-1 the procedure can be rec
AB - A parameterization of the cooling rate of the earth’s middle atmosphere due to radiation transfer in the 15 μm CO2 band is proposed. The parameterization has been performed for such an atmospheric layer with local thermodynamic equilibrium (below approximately 75 km), for which in the major part of the frequency interval occupied by the 15 μm band the approximation of non-overlapping lines (above about 30 km) is justified. The overlap of lines has only been taken account of for superposed strong Q-branches at the centre of the 15 μm band. The parameterization takes into account the peculiar features of radiation transfer: 1. (1) the height step increases with the growing distance from the level, for which cooling is calculated; 2. (2) the dependence of line intensity on temperature has partially been taken account of in an explicit form. The procedure proposed is multiparametric: 42 parameters are prescribed for calculating cooling at a given level. With an error less than 0.5 K day-1 the procedure can be rec
M3 - Article
SP - 993
EP - 1004
JO - Journal of Atmospheric and Solar-Terrestrial Physics
JF - Journal of Atmospheric and Solar-Terrestrial Physics
SN - 1364-6826
IS - 11
ER -
ID: 5049850