Thermospheric dynamics during November 21-22, 1981 - Dynamics Explorer measurements and thermospheric general circulation model predictions

Details Thermospheric dynamics during November 21-22, 1981 - Dynamics Explorer measurements and thermospheric general circulation model predictions Thermospheric dynamics during November 21-22, 1981 - Dynamics Explorer measurements and thermospheric general circulation model predictions

Jan 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jgr....93..209r&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 93, Jan. 1, 1988, p. 209-225.

Physics

25

Atmospheric Circulation, Atmospheric Models, Particle Precipitation, Polar Caps, Solar Wind, Thermosphere, Dynamics Explorer 2 Satellite, Electric Field Strength, Morphology, Northern Hemisphere, Southern Hemisphere, Time Dependence

Scientific paper

Time-dependent aurora and magnetospheric convection parameterizations have been derived from solar wind and aurora particle data for November 21-22, 1981, and are used to drive the auroral and magnetospheric convection models that are embedded in the National Center for Atmospheric Research thermospheric general circulation model (TGCM). Neutral wind speeds and transition boundaries between the midlatitude solar-driven circulation and the high-latitude magnetospheric convection-driven circulation are examined on an orbit-by-orbit basis. The results show that TGCM-calculated winds and reversal boundary locations are in generally good agreement with Dynamics Explorer 2 measurements for the orbits studied. This suggests that, at least for this particular period of relatively moderate geomagnetic activity, the TGCM parameterizations on the eveningside of the auroral oval and polar cap are adequate.

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