Infrared Backgrounds from Rotational Non-Equilibrium Processes in the Upper Atmosphere

Details Infrared Backgrounds from Rotational Non-Equilibrium Processes in the Upper Atmosphere Infrared Backgrounds from Rotational Non-Equilibrium Processes in the Upper Atmosphere

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsa71a..03b&link_type=abstract

American Geophysical Union, Fall Meeting 2002, abstract #SA71A-03

Physics

0310 Airglow And Aurora, 0317 Chemical Kinetic And Photochemical Properties, 0355 Thermosphere: Composition And Chemistry

Scientific paper

Many of the dominant features of the infrared spectrum of the mesosphere and thermosphere result from the production of radiating states of atmospheric species which are not in vibrational equilibrium with the local translational temperature. However, the analysis of high spectral resolution data collected during the CIRRIS 1A Space Shuttle and the Midcourse Space Experiment (MSX) missions showed that significant infrared spectral features of the upper atmosphere are due to states of radiating species which are not in rotational equilibrium with the local translational temperature. This paper will review the observational database collected by CIRRIS 1A and MSX on infrared emissions from highly rotationally excited OH, NO, and NO+ in the upper atmosphere. Laboratory measurements, state-to-state molecular dynamics calculations, and aeronomic models of chemical processes producing highly rotationally excited OH in the mesosphere and highly rotationally excited NO and NO+ in the thermosphere will also be reviewed. In addition, requirements for additional space-based observations, laboratory measurements, and chemical dynamical calculations of upper atmospheric rotational non-equilibrium processes will be identified.

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