Observations of the O2 atmospheric band nightglow by the High Resolution Doppler Imager

Details Observations of the O2 atmospheric band nightglow by the High Resolution Doppler Imager Observations of the O2 atmospheric band nightglow by the High Resolution Doppler Imager

Aug 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994jgr....9915017b&link_type=abstract

Journal of Geophysical Research, Volume 99, Issue A8, p. 15017-15024

Physics

47

Atmospheric Composition And Structure: Airglow And Aurora, Meteorology And Atmospheric Dynamics: Waves And Tides

Scientific paper

During nighttime operation the High Resolution Doppler Imager (HRDI) on the Upper Atmosphere Research Satellite (UARS) measured both the horizontal wind field at about 94 km altitude and the limb brightness of the O2(b1∑+g-X3∑+g) (0,0) atmospheric band airglow. The dominant feature of the observed emission is a latitudinal and local time dependence which is consistent with the (1,1) diurnal tidal mode. A survey of the available data set from November 1991 to July 1993 reveals a semiannual variation in the peak brightness observed at the equator, with maxima observed at the equinoxes and minima at the solstices. These results are consistent with the long-term variations in the diurnal tidal amplitudes detected in HRDI wind measurements.

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