Physics
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsm12a0479p&link_type=abstract
American Geophysical Union, Fall Meeting 2002, abstract #SM12A-0479
Physics
2407 Auroral Ionosphere (2704), 2411 Electric Fields (2712), 2427 Ionosphere/Atmosphere Interactions (0335), 2455 Particle Precipitation, 2736 Magnetosphere/Ionosphere Interactions
Scientific paper
The variances, cross-variances, and temporal autocorrelations of auroral ionospheric electric fields and conductances are evaluated as functions of the time of day, season and activity indices, based on sixteen years of observations from the European Incoherent Scatter (EISCAT) Radar. This quantitative information is needed for accurate modeling of auroral energy inputs in thermosphere/ionosphere simulation models, and is also needed for optimization of ionospheric electrodynamic data assimilation procedures. The average electric field and conductances are modeled, about which the statistical variabilities are analyzed. We evaluate the manner in which the calculation of Joule heating is influenced by the interrelated variabilities of the electric field and of the Pedersen conductance.
Lathuillere Ch.
Maute Astrid
Pibaret B.
Poku-Awuah A. A.
Richmond Arthur D.
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