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Summary of features for the BAS Global Dynamic Radiation Belt Model

Type of model 3 dimensional, time-dependent diffusion model for phase-space density based on solution of the Fokker-Planck equation
Diffusion coefficients Radial diffusion coefficients are taken from [Brautigam & Albert ,JGR,2000]
Pitch-angle and energy diffusion coefficients are calculated using the PADIE code [Glauert & Horne, JGR, 2005]. More information about PADIE can be found here
Co-ordinate system The model uses 2 coordinate systems to construct computational grids:
(L*, α, E) and (L*, μ, J)
Numerical method Implicit finite difference scheme
Required Inputs A time-series of Kp for the period in question
Optional Inputs The initial particle flux or phase space density
The variation of particle flux or phase space density with time on the boundaries in L* and E
Wave-particle interaction models BAS chorus model
BAS hiss model which includes diffusion due to lightning and hiss in plumes
These MLT averaged models were derived using the BAS wave database
Other wave-particle interactions can also be included
Pitch-angle, energy and L-shell ranges 0o ≤ pitch-angle ≤ 90o
The energy and L-shell grids can be varied but typically 1 ≤ L*≤ 7 and
10 MeV/G ≤ μ ≤ 2000 MeV/G at L* = 6.5
Outputs The model produces a time-series of the flux or phase-space density on the 3-d grid

Wave accelerations in the radiation belts