Observation of highly rotationally excited NO+ emissions in the thermosphere

Details Observation of highly rotationally excited NO+ emissions in the thermosphere Observation of highly rotationally excited NO+ emissions in the thermosphere

Sep 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000jastp..62.1189s&link_type=abstract

Journal of Atmospheric and Solar-Terrestrial Physics, Volume 62, Issue 13, p. 1189-1198.

Physics

3

Scientific paper

Ro-vibrational band head emissions from highly rotationally-excited NO+(v,J) (/J>=90) have been observed for quiescent and aurorally disturbed conditions at tangent altitudes between approximately 100 and 215km in the terrestrial thermosphere. The formation of these band heads in NO+ requires very high rotational excitation with rotational energy of at least 1.9eV. The data were obtained between 28 and 30 April 1991 with the CIRRIS-1A cryogenic interferometer from on board the space shuttle. These are the first observations of non-thermal rotational emissions from NO+ in the airglow. Several possible sources of these non-thermal emissions are discussed. This is the third in a series of recent discoveries (all from the CIRRIS-1A data base) of significant non-thermal rotational effects in an important atmospheric species.

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