Effects of heating at high latitudes on global thermospheric dynamics

Details Effects of heating at high latitudes on global thermospheric dynamics Effects of heating at high latitudes on global thermospheric dynamics

Dec 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975jatp...37.1545s&link_type=abstract

Journal of Atmospheric and Terrestrial Physics, vol. 37, Dec. 1975, p. 1545-1554.

Physics

Atmospheric Heating, Far Ultraviolet Radiation, Polar Regions, Solar Heating, Thermosphere, Wind Profiles, Atmospheric Circulation, Atmospheric Models, Equinoxes, Pressure Gradients, Solstices, Temperature Distribution, Vertical Distribution

Scientific paper

The extent to which heating of the thermosphere at high latitudes contributes to discrepancies between three-dimensional calculations (Straus et al., 1975) of the thermospheric wind density, and temperature fields generated by solar EUV heating and experimental results is investigated. This heating lowers the day to night temperature ratio, since it provides a heat source at night. It brings calculated meridional winds and pressure gradients into better agreement with observations, since it raises isobaric surfaces at high latitudes. The amount of heating at high latitudes required to make these modifications is consistent with that due to quiet time joule heating.

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