The auroral ionosphere - Comparison of a time-dependent model with composition measurements

Details The auroral ionosphere - Comparison of a time-dependent model with composition measurements The auroral ionosphere - Comparison of a time-dependent model with composition measurements

Aug 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84.4335g&link_type=abstract

Journal of Geophysical Research, vol. 84, Aug. 1, 1979, p. 4335-4340. Research supported by the Fonds National de la Recherche

Computer Science

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Atmospheric Chemistry, Atmospheric Models, Auroral Spectroscopy, Ionospheric Composition, Nitrogen Oxides, Time Dependence, Auroral Zones, Electron Energy, Ion Production Rates, Ionospheric Electron Density, Ionospheric Ion Density, Mass Spectrometers, Neutral Particles, Reaction Kinetics, Rocket Sounding, Satellite Observation, Satellite-Borne Instruments

Scientific paper

A time-dependent model of the auroral ionosphere including the odd nitrogen species, NO, N(D-2), and N(S-4), is used for comparison with data from a coordinated rocket-satellite measurement of an auroral event. The chemical scheme and the adopted rate coefficients have been shown to be compatible with daytime mid-latitude ionospheric chemistry. The electron flux and neutral atmospheric parameters measured on the satellite are used to compute the appropriate ionization and dissociation rates. The calculated NO(plus), O2(plus), O(plus), Ne, and NO densities agree well with the rocket measurements. The calculated N2(plus) densities are larger than the measured densities by a factor of 3 at most altitudes. The calculations show that the nitric oxide content of the aurora (about 1.2 times 10 to the 9th NO molecules/cu cm at 105 km) is below the saturation value.

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