Fok Ring Current
CCMC Services available for Fok Ring Current
To request an FRC run, submit a run for SWMF/BATSRUS and select 'Run M-C Fok Ring Current Model' at STEP 6.
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Model Developer(s)
Mei-Ching H. Fok
NASA/Goddard Space Flight Center
Model Description
The Fok Ring Current Model (FRC) is a bounce-averaged kinetic model of the ring current. This model calculates the temporal and spatial variation of the phase space density of ring current species, H+ and e-, in the energy range of 1 - 300 keV. The model considers particle drift, charge exchange loss, in realistic, time-varying magnetic and electric fields. The simulation region is from the dayside magnetopause to the nightside boundary at 10 earth radii. The model is an initial-boundary-value problem, so initial distribution and boundary distribution as a function of time is required to run the model.
Model Input
- 3D Magnetic Fields
- 2D Ionospheric height-integrated Potentials
- Equatorial Plasma Density
- Equatorial Plasma Temperature
Model Output
Equatorial H+ and e- fluxes as functions of time, energy and pitch angle. Fluxes at off-equator can be obtained by assuming constant flux along a field line.
References and relevant publications
- Fok, M.-C., and T. E. Moore, Ring current modeling in a realistic magnetic field configuration, Geophys. Res. Lett., 24, 1775-1778, 1997.
- Fok, M.-C., T. E. Moore, and D. C. Delcourt, Modeling of inner plasma sheet and ring current during substorms, J. Geophys. Res., 14557-14569, 1999.
- Fok,
M.-C., R. A. Wolf, R. W. Spiro, and T. E. Moore, Comprehensive
computational model of the Earth's ring current, J.
Geophys. Res., 106, 8417-8424, 2001.
Relevant links
Fok
Ring Current Web link: http://mcf.gsfc.nasa.gov/
CCMC Contact(s)
301-286-1085
Developer Contact(s)
301-286-1083
