Using spectroscopic databases in the development of adaptive methods of modelling the emission and absorption of non monochromatic light by atmospheric gases

This paper describes a technique for the adaptive statistical modelling of the absorption and emission spectra of nonmonochromatic light by atmospheri c gases, using spectroscopic databases for the parameters of the spectral l ines. The technique is based on the statistical processing of the results o f the numerical modelling of spectral optical thicknesses of atmospheric ga ses as applied to a specific applied problem. The results of the numerical modelling are used to construct an approximation model to solve a specific applied problem of light transport in the atmosphere. The basic approximati on formula is given, and the principles are indicated for choosing the stat istical weights for specific results of the modelling. The results of the m odelling are illustrated, using specific numerical examples. (C) 2001 The O ptical Society of America.