Two high-latitude electrodynamic models compared: AMIE and Electra

Details Two high-latitude electrodynamic models compared: AMIE and Electra Two high-latitude electrodynamic models compared: AMIE and Electra

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsm51d..08v&link_type=abstract

American Geophysical Union, Fall Meeting 2001, abstract #SM51D-08

Other

2708 Current Systems (2409), 2722 Forecasting, 2736 Magnetosphere/Ionosphere Interactions, 2784 Solar Wind/Magnetosphere Interactions, 2788 Storms And Substorms

Scientific paper

The large-scale convective state and its dynamics is still an open issue. We compare electric field maps obtained from two high-latitude models for different conditions of convection. AMIE is a assimilative technique integrating simultaneous radar, magnetometer, and other observations into an snapshot of the electrodynamic state of the high-latitude ionosphere. Electra is a dynamic model of the ground geomagnetic field with modules for ionospheric conductance and the KRM inversion technique. It is driven either by the Polar Cap index or by interplanetary key parameters (a time-dependent early version of the model is diplayed at the website below). We compare electric fields from the two techniques in the following types of convection/substorm regimes: a Southward to Northward turning; steady convection; and two small (-600 nT) substorms.

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