Mathematics – Logic
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsa33a1612m&link_type=abstract
American Geophysical Union, Fall Meeting 2008, abstract #SA33A-1612
Mathematics
Logic
2400 Ionosphere (6929), 2415 Equatorial Ionosphere, 2431 Ionosphere/Magnetosphere Interactions (2736), 2447 Modeling And Forecasting
Scientific paper
Penetration of interplanetary electric fields (IEF) to the equatorial ionosphere is studied using solar wind data from the ACE satellite and equatorial ionsopheric eastward electric field (EEF) data from the JULIA radar for the time period 2000-2008. The study brings out the dependence of prompt penetration of IEF to the day time equatorial ionosphere for all local times, seasons, IMF Bz conditions and f10.7 as a function of frequency. We propose a transfer function based model to predict EEF from the IEF data. The use of this transfer function decreases the misfit of a climatological model of the measured equatorial electric field by 30%. To improve the long period (> 3 hours) portion of the transfer function, we explore the use of EEF data derived from the magnetic measurements by the CHAMP satellite. The model and coefficients are available at http://geomag.us.
Alken Patrick
Manoj C.
Maus Stefan
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