Sodium Distribution in the Terrestrial Upper Atmosphere

Details Sodium Distribution in the Terrestrial Upper Atmosphere Sodium Distribution in the Terrestrial Upper Atmosphere

Dec 1969

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1969natur.224.1097m&link_type=abstract

Nature, Volume 224, Issue 5224, pp. 1097 (1969).

Computer Science

1

Scientific paper

OBSERVATIONS1-3 of the twilight glow and dayglow have shown that there is a thin layer of free sodium atoms at a height of about 90 km. There is usually a daytime enhancement of the sodium abundance compared with the abundance at twilight; the daytime layer seems to be at the same height or a few kilometres higher than the twilight layer. Furthermore, the scale heights on the topside (and on the bottomside) of the daytime layer are unexpectedly small, ranging from 2.5 km (ref. 2) through 3 km (ref. 1) to 4.5 km (ref. 3), whereas the atmospheric scale height is about 6 km.

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