Physics
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsh42a0498m&link_type=abstract
American Geophysical Union, Fall Meeting 2003, abstract #SH42A-0498
Physics
2411 Electric Fields (2712), 2415 Equatorial Ionosphere, 2447 Modeling And Forecasting
Scientific paper
The Advanced Space Environment Thermosphere Ionosphere Mesosphere Electrodynamics General Circulation Model (ASPEN-TIMEGCM) has been run to simulate the global ionosphere for three days in April 2002 and five days in June 2002. The April period was a time of quiet geomagnetic activity preceding an intense storm while the June period was a time of quiet to moderate activity. These periods were chosen as data from the Jicamarca Radio Observatory were available. Here, we concentrate on the eastward electric field (vertical ion drift) at the location of Jicamarca, as this is one of the most important parameters in setting up the low-latitude ionosphere. We find that the model properly captures the variations of the eastward equatorial electric field. In particular, it correctly models the timing and magnitude of the pre-reversal enhancement, both on nights when it is present and those when it is not.
Chau Jorge L.
Crowley Geoff
Kelley Michael C.
Kudeki Erhan
Makela Jarmo
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