Mid-winter hydroxyl night airglow emission intensities in the northern polar region

Details Mid-winter hydroxyl night airglow emission intensities in the northern polar region Mid-winter hydroxyl night airglow emission intensities in the northern polar region

Mar 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984p%26ss...32..263m&link_type=abstract

Planetary and Space Science, Volume 32, Issue 3, p. 263-271.

Computer Science

5

Scientific paper

Ground-based spectrophotometric measurements of night airglow OH (8-3) band absolute intensities in the polar cap region (78.4°N) during winter solstice are reported. A mean value of 425 +/- 40 R is found for the absolute intensity of the OH (8-3) band. Maximum and minimum daily mean values were 770 and 320 R respectively with hourly mean values ranging from 180 to 1020 R. Neither a winter solstice minimum or maximum in the intensity is obvious from the data. No consistent correlation was found between the absolute intensity and geomagnetic and solar activity. A mean transport of O and O3 into the polar cap region corresponding to a meridional wind speed of at least 20 m s-1 at 90 km height seems necessary to maintain the observed intensity. A dominant semidiurnal tide component is found in the intensity data, both on a 20-day and a 3-day time scale.

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