Computer Science
Scientific paper
Sep 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990p%26ss...38.1077m&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 38, Sept. 1990, p. 1077-1089.
Computer Science
6
Atmospheric Models, Convection Currents, Geomagnetism, Interplanetary Magnetic Fields, Magnetohydrodynamic Flow, Polar Caps, Auroral Zones, Electron Precipitation, F Region, Ionospheric Electron Density
Scientific paper
The Utah State University Ionospheric Model was run to obtain diurnally reproducible ionospheric densities and temperatures for summer and winter conditions using both distorted two-cell and three-cell convection patterns. Differences due to the different convection patterns manifest themselves in the depth and location of polar holes in the F-region electron density. While the total depth of the model holes is a characteristic of the diurnally reproducible pattern, the features appear and are recognizable within 0.5 h. Langmuir probe data from 41 DE-2 passes, during which the IMF Bz component was northward, have been qualitatively checked against the model predictions. The cross polar cap electron density profiles of a large majority of the passes more closely conform to the distorted two-cell runs for both polarities of the IMF By component. This test can be generalized to rule out proposed convection patterns based on the presence/absence and position of polar electron density holes.
Brace Larry H.
Heppner James P.
Maynard Nelson C.
Schunk Robert W.
Sojka Jan J.
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