Near-mesopause temperatures at 69 N latitude in late summer

Details Near-mesopause temperatures at 69 N latitude in late summer Near-mesopause temperatures at 69 N latitude in late summer

Jun 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989esasp.291...63v&link_type=abstract

In ESA, European Rocket and Balloon Programs and Related Research p 63-66 (SEE N90-13826 05-42)

Physics

Atmospheric Temperature, Mesopause, Optical Radar, Temperature Measurement, Temperature Profiles, Doppler Effect, European Space Programs, Night, Polar Regions, Sodium, Solar Radiation, Summer

Scientific paper

The measured temperature profiles in the altitude region 80 to 110 km, by probing the Doppler width of the laser excited D2 resonance line of free sodium atoms, are presented. They are obtained by applying a Na lidar. Three difficulties are encountered: the lack of a sufficient sodium density below 88 km altitude; a strongly enhanced background due to scattered solar radiation; and potential Na saturation effects. Trial observations in 12 nights of August and with solar depression angles as small as minus 4 deg are obtained. During these nights temperatures down to 120 K are observed.

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