Semi-empiric approach to the calculation of H2O and CO2 line broadening and shifting |
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| Authors: | A D Bykov N N Lavrentieva |
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| Institution: | Atmospheric Spectroscopy Division , Institute of Atmospheric Optics, SB, Russian Academy of Science , Av. Akademicheskii 1, 634055, Tomsk, Russia |
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| Abstract: | A semi-empiric approach to the calculation of spectral line half-widths and shifts is proposed. This approach is based on the Anderson approximation and includes the correction factors, the parameters of which can be determined by fitting the broadening or shifting coefficients to the experimental data. This allows sufficiently accurate predictions of the parameters of line profiles that were not measured. The coefficients of CO2 and H2O spectral line broadening and shifting due to air and nitrogen pressure are calculated, as well as the coefficients of their temperature dependence. The calculated coefficients agree satisfactorily with measured values. |
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