Effect of a horizontal wind on 1.27-micron auroral emission from O2/'Delta g/ molecules

Details Effect of a horizontal wind on 1.27-micron auroral emission from O2/'Delta g/ molecules Effect of a horizontal wind on 1.27-micron auroral emission from O2/'Delta g/ molecules

Aug 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980jgr....85.4295r&link_type=abstract

Journal of Geophysical Research, vol. 85, Aug. 1, 1980, p. 4295-4298.

Physics

Airglow, Atmospheric Chemistry, Auroral Arcs, Emission Spectra, Molecular Spectra, Auroral Ionization, Electron Transitions, Ion Production Rates, Molecular Relaxation, Nitrogen, Oxygen

Scientific paper

A horizontal wind blowing through a region where auroral bombardment produces metastable O2('Delta g) molecules transports the excited species downstream. Absence of collisional deactivation and a long radiative lifetime result in 1.27-micron radiation that may be observed several hundred kilometers downwind at locations entirely devoid of energetic particle bombardment and the usual prompt emissions characteristic of aurora. These circumstances can lead to large 1.27 micron/4278 A emission rate ratios as well as large absolute emission rates of 1.27 micron, and thus help to account for some unusual observations reported in the literature.

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