Energetic Electron Flux Models

| .eps file of image | Data used to drive models | Large Plot |

Data Description:

Vsw is the daily-averaged magnitude of the solar--wind velocity in GSM coordintates. The data were obtained from OMNIWeb. This data is based on measurements from both the WIND and ACE satellites.
Related Links and Publications

Je:  The daily averaged omnidirectional flux in the energy range of 2-6 MeV was measured by the SAMPEX satellite.

Related Links and Publications
Description of Models:
FIR Model:  This is a linear finite-impulse-response filter parametrized by L shell [Vassiliadis et al., 2002]. Its output is the logarithm of the omnidirectional flux of 2-6 MeV electrons at all L shells in the range 1-10. This model has been trained on SAMPEX/PET electron flux measurements. Input to the model is the preceding solar wind velocity Vsw over 21 days. The time resolution is 1 day and the spatial (radial) resolution is DeltaL=0.1 R_E.
Related Links and Publications
THRESH Model:  This model gives a prediction of a threshold crossing in Je based on recent solar-wind conditions. The model predicts the time when log(Je) will cross the threshold value shown with a horizontal dashed line. The days of the warning are shaded in gray.
Related Links and Publications

Solar-wind velocity measurements

ACE Satellite Page
ACE SWEPAM Instrument page
Real time ACE data at NOAA

Relativistic electron fluxes in the magnetosphere

Trapped Radiation Environment Model Development (TREND)
Xinlin Li's Prediction Model
LANL Geosyncronous Relativistic Electron Page
Relativistic Electron Forecast Model at SEC/NOAA

FIR Model: 

D. Vassiliadis et al., Long-term-average, solar cycle, and seasonal response of magnetospheric energetic electrons to the solar wind speed, JGR, 107, A11, 1383, doi:10.1029/2001JA000506, 2002.