Nighttime auroral energy deposition in the middle atmosphere

Details Nighttime auroral energy deposition in the middle atmosphere Nighttime auroral energy deposition in the middle atmosphere

Jul 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jgr....89.5581g&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 89, July 1, 1984, p. 5581-5596.

Computer Science

Sound

32

Auroras, Energetic Particles, Ionospheric Electron Density, Middle Atmosphere, Atmospheric Energy Sources, Night, Relativistic Electron Beams, Rocket Sounding, X Ray Analysis

Scientific paper

Ionospheric rocket sounding data for eight nighttime auroral events are used to characterize relativistic electron showers and their effects on atmospheric ozone. The rockets were launched from the Poker Flat Research Range in Alaska and from Andoya, Norway over the period 1976-82. Energetic fluxes were always detected but were of insufficient magnitude to produce significant changes in stratospheric ozone. However, middle atmospheric energy sources were found to be dominated by relativistic electrons and X-ray bremmstrahlung, the latter from 40-55 km and the former from 55-60 km altitudes. The ionizing radiation is concluded to be a significant factor in mesospheric ion conductivity, mobility, electric field structure and analytical models for the ion-neutral chemistry.

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