Fourth-Order Rotational Corrections to the Effective Dipole Moments of Nonrigid Asymmetric Rotors.

An expression for the fourth-order rotational correction terms of the effective dipole moments of nonrigid asymmetric rotors has been derived using the method of contact transformation. The treatment takes into account the large-amplitude bending motion. The correction terms have been calculated for the different bending states of the H(2)O molecule.

Influence of the shift H2O absorption lines with air pressure on the accuracy of the atmospheric humidity profiles measured by the differential-absorption method.

The variation with pressure of the centers of absorption lines of atmospheric H(2)O has been investigated experimentally using ruby and neodymium lasers. A numerical analysis of possible errors resulting from pressure shifts in the solutions of the inverse problem in remote laser sensing of vertical humidity profiles has been made.

Integral-equation method for interpreting laser-sounding data on atmospheric gas components using differential absorption.

Data on laser sounding of an atmospheric humidity field are interpreted by using the differential-absorption method. A regularizing algorithm for restoring the accuracy of the water-vapor profile by resolving the errors of optical measurements and fluctuations of the aerosol backscattering coefficient is suggested. The efficiency of the inversion method is illustrated, using a numerical experiment and examples of restitution of the humidity profiles based on data of laser sounding up to 8-km altitudes.