High latitude summer observations of the hydroxyl airglow

Details High latitude summer observations of the hydroxyl airglow High latitude summer observations of the hydroxyl airglow

Sep 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991p%26ss...39.1263l&link_type=abstract

Planetary and Space Science, Volume 39, Issue 9, p. 1263-1270.

Physics

13

Scientific paper

Spectra of the hydroxyl night airglow in the near infrared region were obtained under high latitude summer conditions at Poker Flat, Alaska, during August 1986. Rotational temperatures and relative populations have been deduced from the spectra for vibrational levels from 2 to 8. During the observing period the nightly average rotational temperature increased from 155 to 173 K, but the nightly variation of temperature generally did not exceed 10 K. On one night, a short period of nearly sinusoidal variation of both intensity and temperature was observed, with small phase shifts which varied with vibrational level. Correlation of intensity and temperature variation on two nights gave a value of ~ 8 for Krassovsky's parameter, η. Differences in the average rotational temperature as measured from bands arising from different vibrational levels were noted, but in general they did not exceed the possible calibration uncertainty.

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