Computer Science
Scientific paper
Apr 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984p%26ss...32..447g&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 32, April 1984, p. 447-456.
Computer Science
17
Atmospheric Heating, Diurnal Variations, Equinoxes, Solar Oscillations, Solar Terrestrial Interactions, Upper Atmosphere, Atmospheric Tides, Flux Density, Thermosphere
Scientific paper
Evaluations are presented of the time-average heating at different latitudes and heights due to energy-flux divergence of the equinox diurnal and semidiurnal tides calculated by Forbes (1982) from 0 to 400 km. It is found that diurnal tidal heating maximizes in the region of 80 km, and semidiurnal has a sharp maximum at 108 km. Thermospheric diurnal oscillations give rise to a second region of heating that maximizes at 200 km and effectively transports energy from low to high latitudes. Global means are evaluated for the time-averaged vertical energy fluxes and heating rates: below 130 km, the results for the diurnal tide agree with those for the (1,1) mode alone; for the semidiurnal tide, heating rates below 130 km are the same as those that would be obtained without the thermospheric semidiurnal excitation. Comparisons are made from 90 to 170 km between the combined diurnal and semidiurnal heating rates and previously reported rates due to EUV radiation, Sq currents, and gravity waves.
Forbes Jeffrey M.
Groves Gerald V.
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