LIDAR temperature profiling of planetary atmospheres

Details LIDAR temperature profiling of planetary atmospheres LIDAR temperature profiling of planetary atmospheres

Mar 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...212..936h&link_type=abstract

Astrophysical Journal, Part 1, vol. 212, Mar. 15, 1977, p. 936-945.

Astronomy and Astrophysics

Astronomy

2

Atmospheric Temperature, Optical Radar, Planetary Atmospheres, Radar Astronomy, Remote Sensors, Temperature Profiles, Absorption Spectra, Doppler Effect, Infrared Spectra, Molecular Absorption, Spectral Line Width, Temperature Measurement

Scientific paper

A procedure whereby two adjacent absorption lines are probed by differential absorption lidar techniques to obtain measurements of the gas-equilibrium temperature profile in planetary atmospheres is rederived for the case where both Doppler and Lorentz broadening are important. Absorption-line theory is reviewed, the relation of that theory to lidar observations is discussed, and the temperature dependence of the A3 factor is evaluated. The results are applied to the CO2 and CH4 molecules over a broad range of the infrared spectral region (5 to 15 microns). The procedure examined is shown to be applicable to both the upper and the lower atmosphere. It is noted that differential absorption measurements in the case considered necessitate three lasing wavelengths.

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