Solar wind energy as a source of upper-atmosphere heating on earth and Jupiter

Details Solar wind energy as a source of upper-atmosphere heating on earth and Jupiter Solar wind energy as a source of upper-atmosphere heating on earth and Jupiter

Feb 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977jgr....82..727v&link_type=abstract

Journal of Geophysical Research, vol. 82, Feb. 1, 1977, p. 727-730. Bundesministerium für Forschung und Technologie

Physics

1

Atmospheric Heating, Earth Atmosphere, Energy Sources, Jupiter Atmosphere, Solar Wind, Atmospheric Composition, Esro 4 Satellite, Far Ultraviolet Radiation, Gas Analysis, Solar Flux Density, Solar Heating, Temperature Effects, Thermosphere, Upper Atmosphere

Scientific paper

Measurements of thermospheric composition by the Esro 4 gas analyzer reveal a permanent increase in exospheric temperature at high latitudes. It is argued that the required energy is ultimately derived from the solar wind and that a 0.0005 part of the total solar-wind flux intercepted by the magnetosphere of earth will maintain the observed temperature increase. Heating of a planetary upper atmosphere by the solar wind will be proportional to the cross-sectional area of the magnetosphere of the planet and the leakage rate of solar-wind energy into the atmosphere. It is estimated that the ratio of heat input from the solar wind with respect to the EUV heat input will be about 20 times higher on Jupiter than on earth if similar leakage rates at both planets are assumed. The solar wind may thus contribute to the high temperatures observed in the Jovian thermosphere.

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