Abstract
Simultaneous observations of the night airglow OH (6,2) band emission intensity androtational temperature, by a sky scanning airglow spectrophotometer, and meteor winds, by amiddle and upper atmosphere radar (MU radar), were carried out at Shigaraki (34.9°N, 136.1°E), Japan, from 29 October to 11 November 1994, during the CRISTA/MAHRSIcampaign. Horizontal structures in the OH emission intensity and rotational temperature weremonitored optically, together with the background wind and its wave induced fluctuations,measured by MU radar. A total of 5 nights among the 7 nights of useful data showed wavelikeoscillations in both the emission intensity and temperature. Good agreement was found betweenindividual wave parameters—intrinsic period, phase velocity, horizontal and verticalwavelength—obtained from the radar and optical techniques. On some occasions a short period(∼3 h) gravity wave was observed to propagate, superposed on a long period (∼9 h) wave.
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