Nitric oxide in the middle to upper thermosphere

Details Nitric oxide in the middle to upper thermosphere Nitric oxide in the middle to upper thermosphere

Mar 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jgr....97.3209s&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 97, no. A3, March 1, 1992, p. 3209-3217.

Computer Science

Sound

25

F Region, Nitric Oxide, Oxygen Ions, Photochemical Reactions, Rocket Sounding, Thermosphere, Atmospheric Chemistry, Middle Atmosphere, Reaction Kinetics, Recombination Reactions, Solar Cycles

Scientific paper

The results of six rocket observations of thermospheric nitric oxide are reviewed and reconciled with the available laboratory photochemical data. The impact of the recently revised recommendation for the N (S-4) + O2 rate coefficient on photochemical models is assessed. Use of the new rate coefficient leads to significantly enhanced production of NO, particularly at F-region altitudes during solar maximum conditions. A comparison of photochemical calculations with the rocket profiles indicates that the new rate coefficient introduces a significant discrepancy which can be resolved if the recombination reaction of N + NO is temperature dependent. Calculations using the preposed rate coefficient predict the NO solar cycle variation at 180 km to be less than at 140 km, which is also in agreement with the observations.

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