Physics
Scientific paper
Dec 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980jgr....85.6819t&link_type=abstract
Journal of Geophysical Research, vol. 85, Dec. 1, 1980, p. 6819-6826.
Physics
10
Atmospheric Heating, Midlatitude Atmosphere, Solar Radiation, Thermosphere, Ultraviolet Radiation, Energy Budgets, Energy Dissipation, Far Ultraviolet Radiation, Steady State, Winter
Scientific paper
Experimental measurements of relevant parameters over the last five years have made possible an accurate reassessment of the thermospheric heating efficiency for solar ultraviolet photons. The outcome of a steady state calculation applicable to mid-latitudes is reported here. The results are found to be significantly different from an earlier determination, both in magnitude and in variation with altitude. The heating efficiency is approximately 50% near the peak of the extreme ultraviolet energy deposition and falls to approximately 10% near 400 km. The implications for the understanding of the thermospheric energy budget are significant. The various energy channels by which solar energy is transferred to the neutral atmosphere are quantified and summer/winter and solar maximum/solar minimum conditions are compared.
Richards Paul G.
Torr Douglas G.
Torr Marsha R.
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