Nitric oxide and lower ionosphere quantities during solar particle events of October 1989 after rocket and ground-based measurements

Details Nitric oxide and lower ionosphere quantities during solar particle events of October 1989 after rocket and ground-based measurements Nitric oxide and lower ionosphere quantities during solar particle events of October 1989 after rocket and ground-based measurements

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jatp...54..183z&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 54, Feb. 1992, p. 183-192.

Computer Science

Sound

20

Ionospheric Composition, Ionospheric Ion Density, Nitric Oxide, Rocket Sounding, Solar Activity Effects, Solar Corpuscular Radiation, Solar Terrestrial Interactions, Atmospheric Attenuation, Ion Production Rates, Ionospheric Electron Density, Ionospheric Sounding, Solar Cosmic Rays, Solar Protons

Scientific paper

Ion density and nitric oxide concentration profiles were measured by rockets launched from the Akademik Shirshov research vessel in the Southern part of the Indian Ocean during the 1989 solar proton event. The NO concentrations estimated from ion-pair production rates due to measured fluxes of high energy particles are found to be in good agreement with the observed NO concentrations in the stratopause region. The total NO content at 50-90 km estimated from the ion-pair production rate is higher by a factor of 2.4 than the observed value. Results of absorption model calculations indicate that the nighttime absorption increase can be explained by the electron density increase related to the rocket-measured increase of ion density as a consequence of enhanced penetration of high energy particles. The daytime absorption increase can be explained mainly in terms of the observed increase of the nitric oxide concentration.

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