Measuring geoeffectiveness of solar wind structures with a high-latitude electrodynamic model

Details Measuring geoeffectiveness of solar wind structures with a high-latitude electrodynamic model Measuring geoeffectiveness of solar wind structures with a high-latitude electrodynamic model

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm..sm61b06v&link_type=abstract

American Geophysical Union, Spring Meeting 2001, abstract #SM61B-06

Physics

2409 Current Systems (2708), 2722 Forecasting, 2736 Magnetosphere/Ionosphere Interactions, 2788 Storms And Substorms, 3220 Nonlinear Dynamics

Scientific paper

We use a nonlinear dynamical spatiotemporal model to represent the high-latitude ionospheric electrodynamics. The model is driven with realistic polar cap index and solar wind input during five intervals of activity ranging from Northward IMF Bz to a magnetic cloud. The model consists of a nonlinear module for the geomagnetic field distribution which is coupled to a KRM module [Kamide et al., 1981] and the auroral conductance [Ahn et al., 1998]. We measure the geoeffectiveness through the maximum geomagnetic disturbance, the polar cap size, and the dissipated Joule heat, as functions of time. We discuss the uses of the model in practical space weather forecasting.

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