Two-frequency lidar technique for mesospheric Na temperature measurements

Details Two-frequency lidar technique for mesospheric Na temperature measurements Two-frequency lidar technique for mesospheric Na temperature measurements

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990georl..17..929s&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 17, June 1990, p. 929-932.

Physics

58

Continuous Wave Lasers, Mesosphere, Optical Radar, Radar Measurement, Sodium, Temperature Measurement, Dye Lasers, Laser Modes, Laser Pumping, Power Amplifiers, Temperature Profiles

Scientific paper

This paper describes a new two-frequency lidar for measuring Na temperature profiles. The laser oscillator is tuned to the two operating frequencies by observing the Doppler-free structure of the Na D2 fluorescence spectrum in a vapor cell. The lidar technique and initial observations of the temperature profile between 82 and 102 km are described. Absolute temperature accuracies at the Na layer peak of better than + or - 3 K with a vertical resolution of 1 km and an integration period of approximately 5 min were achieved.

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