The consequences of high latitude particle precipitation on global thermospheric dynamics

Details The consequences of high latitude particle precipitation on global thermospheric dynamics The consequences of high latitude particle precipitation on global thermospheric dynamics

Dec 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982p%26ss...30.1259s&link_type=abstract

(International Association of Geomagnetism and Aeronomy, Scientific Assembly, 4th, Edinburgh, Scotland, Aug. 14, 1981.) Planetar

Physics

13

Atmospheric Models, F Region, Geomagnetism, Particle Energy, Particle Precipitation, Thermosphere, Atmospheric Circulation, Electric Fields, Meridional Flow, Steady State, Time Dependence

Scientific paper

Fuller-Rowell and Rees (1980) have developed a three-dimensional, time-dependent, global model of thermospheric dynamics to simulate both steady-state and time-varying phenomena. Rees et al. (1980) tested the consistency of models of the variations in the magnitude and spatial extent of the high latitude convective electric field with geomagnetic activity indices. A description is provided of model particle sources. In one model, the effect of the hypothetical lower energy particle source is represented as a heat source with a Chapman profile, peaking at a given pressure level. A more realistic model is also discussed. The thermosphere is found to be very sensitive to a high altitude, thermal particle source. The most striking feature of a low energy (approximately 200 eV) particle source, with its high altitude deposition, is firstly the low global energy source requirement, and secondly the sensitivity of the mid-latitude, thermospheric F region to it.

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