Lidar measurements of atmospheric lithium

Details Lidar measurements of atmospheric lithium Lidar measurements of atmospheric lithium

Nov 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980georl...7..995j&link_type=abstract

Geophysical Research Letters, vol. 7, Nov. 1980, p. 995-998. Research supported by the Centre National de la Recherche Scientif

Astronomy and Astrophysics

Astronomy

4

Abundance, Atmospheric Composition, Lithium Isotopes, Optical Radar, Radar Measurement, Upper Atmosphere, Annual Variations, Meteoroid Showers, Nocturnal Variations, Sodium

Scientific paper

The Haute-Provence Observatory lidar facility has been extended to study the atmospheric lithium and its isotropic ratio Li-7/Li-6 in the upper atmosphere. The experimental features have been improved to lower the detection limit to 3 x 10 to the 5th/sq cm for the total abundance with a resolution of 1.2 km in the altitude profile. The night-time measurements have been carried out from Nov. 1977 to Dec. 1979 and show some characteristic trends. The seasonal variation of the total abundance is similar to the one observed for sodium; the altitude profile is variable during the night. The layer is sensitive to high-altitude artificial releases, like CAMEO in Nov. 1978, and to impinging meteor showers. It is concluded that study of the behavior of atmospheric lithium and sodium should further our understanding of the alkali-metals chemistry.

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