Joule heating in the mesosphere and thermosphere during the July 13, 1982, solar proton event

Details Joule heating in the mesosphere and thermosphere during the July 13, 1982, solar proton event Joule heating in the mesosphere and thermosphere during the July 13, 1982, solar proton event

Jun 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....92.6083r&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 92, June 1, 1987, p. 6083-6090.

Computer Science

Sound

28

Atmospheric Heating, Mesosphere, Resistance Heating, Solar Protons, Thermosphere, Polar Caps, Proton Precipitation, Satellite Sounding

Scientific paper

The solar proton event of July 13, 1982 produced considerable ionization in the polar-cap mesosphere. Energetic solar proton fluxes were measured by the NOAA-6 satellite. The DE-2 satellite measured the low-energy electrons, the ion drift velocity, and other atmospheric and ionospheric properties during the event in the region of the measured maximum electric field (189 mV/m at 2215 UT near 60 deg N), a Joule heating rate of 1-3 K/day is calculated between 70 and 80 km, exceeding the heating due to ozone absorption at noon in the summer hemisphere in that altitude range. The Joule heating rate above 90 km greatly exceeded 20 K/day. The calculated height-integrated Joule heating rate above 100 km in the same region exceeded 400 ergs/sq cm sec, and DE-2 near 350 km measured neutral winds of nearly 1000 m/s and neutral gas temperatures of over 2000 K. The overall ionospheric structure calculated below the DE-2 satellite is described.

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