Summary of features for the BAS Global Dynamic Radiation Belt Model

Type of model3 dimensional, time-dependent diffusion model for phase-space density based on solution of the Fokker-Planck equation
Diffusion coefficientsRadial 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].
Co-ordinate systemThe model uses 2 coordinate systems to construct computational grids:
(L*, α, E) and (L*, μ, J)
Numerical methodImplicit finite difference scheme
Required InputsA time-series of Kp for the period in question
Optional InputsThe 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 modelsBAS 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 ranges0o ≤ 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
OutputsThe model produces a time-series of the flux or phase-space density on the 3-d grid

Wave acceleration in the radiation belts
Wave acceleration in the radiation belts