Mesospheric ionization and O2 1Delta(g) depletion

Details Mesospheric ionization and O2 1Delta(g) depletion Mesospheric ionization and O2 1Delta(g) depletion

Aug 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987p%26ss...35.1087s&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 35, Aug. 1987, p. 1087-1091. NASA-DNA-supported research.

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1

Atmospheric Chemistry, Atmospheric Ionization, Mesosphere, Oxygen Spectra, Ozonometry, Airglow, Ozone Depletion, Positive Ions, Solar Mesosphere Explorer, Solar Protons, Vertical Distribution

Scientific paper

Observations of O2 1Delta(g) emission during solar proton events reveal large depletions below 80 and near 90 km. The lower-altitude depletions are believed to be due to odd hydrogen production and associated depletion of ozone, but the mechanism producing the depletion near 90 km has not yet been established. In this paper, it is proposed that an exothermic charge exchange reaction between O2(+) and O2 1Delta(g) is likely to be responsible for these high-altitude depletions. In particular, it is shown that the vertical structure of the observed change in airglow emission is consistent with this mechanism.

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