Joule heating at high latitudes

Details Joule heating at high latitudes Joule heating at high latitudes

Jun 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jgr....88.4885f&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 88, June 1, 1983, p. 4885-4897.

Physics

65

Atmospheric Heating, Earth Magnetosphere, Electric Fields, Ionospheric Conductivity, Particle Precipitation, Resistance Heating, Annual Variations, Explorer 51 Satellite, Geomagnetism, Satellite Observation

Scientific paper

Calculations based on simultaneous observations of the electric field magnitude, and individual measurements of ion drift velocity and particle precipitation, over the lifetime of the AE-C satellite, are used to determine high latitude Joule heating. Conductivities produced by an averaged seasonal illumination were included with those calculated from particle precipitation. It is found that high latitude Joule heating occurs in an approximately oval pattern, and consists of dayside cleft, dawn and dusk sunward convection, and night sector heating regions. On average, heating in the cleft and dawn-dusk regions contributes the largest heat input, and there is no apparent difference between hemispheres for similar seasons. Joule heat input is 50 percent greater in summer than in winter, due primarily to the greater conductivity caused by solar production.

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