Large-Amplitude Nightglow OH (8-3) band intensity and rotational temperature Variations during a 24-hour period at 78°N

Details Large-Amplitude Nightglow OH (8-3) band intensity and rotational temperature Variations during a 24-hour period at 78°N Large-Amplitude Nightglow OH (8-3) band intensity and rotational temperature Variations during a 24-hour period at 78°N

Nov 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jgr....88.9255m&link_type=abstract

Journal of Geophysical Research, Volume 88, Issue A11, p. 9255-9259

Physics

7

Scientific paper

The authors report results from a continuous 24-hour measurement of the OH (8-3) band emission in the nightglow at 78.4°N. A mean temperature of 273K and a mean band intensity of 596 R were observed. Extreme temperature variations were seen with amplitudes up to ±70K from the mean. It is suggested that these variations are related to the passage of internal gravity waves. If so, the extreme amplitudes of the variations might imply that the OH emitting layer is situated above 90 km at this latitude in January. The deduced η values (ΔI/I/ΔT/T) favor the ozone mechanism to be responsible for the OH emission with the possibility of an additional mechanism contributing up to 5%.

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