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Title: Comparison of empirical models of ionospheric heating to global simulations
Intense currents produced during geomagnetic storms dissipate energy in the ionosphere through Joule heating. This dissipation has significant space weather effects, and thus it is important to determine the ability of physics-based simulations to replicate real events quantitatively. Several empirical models estimate Joule heating based on ionospheric currents using the AE index. In this study, we select 11 magnetic storm simulations from the CCMC database and compare the integrated Joule heating in the simulations with the results of empirical models. We also use the SWMF global magnetohydrodynamic simulations for 12 storms to reproduce the correlation between the simulated AE index and simulated Joule heating. We find that the scale factors in the empirical models are half what is predicted by the SWMF simulations.  more » « less
Award ID(s):
2002574 1916604
PAR ID:
10532378
Author(s) / Creator(s):
;
Publisher / Repository:
Frontiers in Astronomy and Space Science
Date Published:
Journal Name:
Frontiers in Astronomy and Space Sciences
Volume:
10
ISSN:
2296-987X
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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