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Spectroscopic aspects of differential method for sounding gas composition of the atmosphereThe problems concerning the dynamics of populations of the sounded atmospheric gas molecule levels taking into account the nonmonochromatic character of radiation, durations of exciting and sounding pulses, rates of relaxation of excited vibration-rotation states population along different channels in a natural multicomponent mixture of gases and air were investigated. The problems of spectroscopic software, completeness and accuracy of the initial spectroscopic information, information on channels and rates of relaxation from the viewpoint of developing specific schemes of sounding are discussed. The values of deviations of vibration-rotation level populations of some atmospheric molecules from their equilibrium value at simultaneous action of double frequency radiation on the sounding path and the corresponding dynamic variation of lidar return amplitude were estimated. The importance of nonlinear spectrosopic effects in the lidar return value variation at sounding radiation frequency equaling the resonance frequency of vibration-rotation transition in the problem on sounding the humidity profiles and concentrations of gaseous pollutants was also estimated.
Document ID
19870000936
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Zuev, V. V.
(Academy of Sciences (USSR) Tomsk, Ussr)
Ippolitov, I. I.
(Academy of Sciences (USSR) Tomsk, Ussr)
Ponomarev, Y. N.
(Academy of Sciences (USSR) Tomsk, Ussr)
Date Acquired
August 13, 2013
Publication Date
August 1, 1986
Publication Information
Publication: NASA. Langley Research Center 13th International Laser Radar Conference
Subject Category
Geophysics
Accession Number
87N10369
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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