A new international geostationary electron model: IGE-2006, from 1 keV to 5.2 MeV

Department Environnement Spatial, Office National d'Etudes et de Recherches Ae ' rospatiales (ONERA) has been developing a model for the geostationary electron environment since 2003. Until now, this model was called Particle ONERA- LANL Environment ( POLE), and it is valid from 30 keV up to 5.2MeV. POLE is based on the full complement of Los Alamos National Laboratory geostationary satellites, covers the period 1976-- 2005, and takes into account the solar cycle variation. Over the period 1976 to present, four different detectors were flown: charged particle analyzer ( CPA), synchronous orbit particle analyzer ( SOPA), energetic spectra for particles ( ESP), and magnetospheric plasma analyzer ( MPA). Only the first three were used to develop the POLE model. Here we extend the energy coverage of the model to low energies using MPA measurements. We further include the data from the Japanese geostationary spacecraft, Data Relay Test Satellite ( DRTS). These data are now combined into an extended geostationary electron model which we call IGE- 2006.