The N2(+) first negative system in the dayglow from Spacelab 1

Details The N2(+) first negative system in the dayglow from Spacelab 1 The N2(+) first negative system in the dayglow from Spacelab 1

Nov 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jgr....9717075t&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 97, no. A11, p. 17,075-17,095.

Physics

2

Atmospheric Chemistry, Dayglow, Molecular Ions, Nitrogen Ions, Photoionization, Spacelab, Auroras, Photochemical Reactions, Positive Ions, Satellite Observation

Scientific paper

Data obtained by the Spacelab 1 Imaging Spectrometric Observatory represent the first simultaneous multiband spectral measurements of the N2(+) first negative system in the dayglow, and thus the first opportunity to make a detailed comparison of the vibrational and rotational distributions over bands out to nu-prime = 4, free of potential complications. The spectral images show that the bands of the N2(+) first negative system exhibit very unusual vibrational distributions (which correspond to surprisingly high apparent temperatures) and that the intensities are significantly higher than predicted. On the basis of observations of the intensity variation with the solar zenith angle and viewing elevation, it is suggested that there exists a significant induced N2(+) component near the shuttle, which fluoresces when the shuttle is sunlit.

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