This paper presents particle flux measurements (protons and electrons) obtained with the ICARE-NG detector on the JASON-2 orbit (1336 km alt., 66 incl.) for the period June 2008-Aug. 2010. At this altitude, the South Atlantic Anomaly is greatly broadened as compared to lower altitudes. Proton flux measurements are made in the range 27.5-290 MeV and electron flux in the range 1.6-3.6 MeV. A great care was taken to assess the influence of the satellite on the particle measurements. Comparison of measurements with the results of the AP8 MIN model are given for protons, taken into account environment anisotropy.
Abstract. GREEN (Global Radiation Earth ENvironment) is a new model (in beta version)
providing fluxes at any location between L∗= 1 and L∗= 8, all along the
magnetic field lines, for all local times and for any energy between 1 keV
and 10 MeV for electrons and between 1 keV and 800 MeV for protons. This model is
composed of global models (AE8 and AP8, and SPM for low energies) and local models
(SLOT model, OZONE and IGE-2006 for electrons, and OPAL and IGP for protons). GREEN is not just a collection of various models; it calculates
the electron and proton fluxes from the most relevant existing model for a
given energy and location. Moreover, some existing models can be updated or
corrected in GREEN. For examples, a new version of the SLOT model is
presented here and has been integrated in GREEN. Moreover, a new model of
proton flux in geostationary orbit (IGP) developed a few years ago is also
detailed here and integrated in GREEN. Finally a correction of the AE8 model at
high energy for L∗ < 2.5 has also been implemented. The inputs of
the GREEN model are the coordinates of the points and the date (year, month,
day, UTC) along an orbit, the particle species (electron or proton) and the
energies. Then GREEN provides fluxes all along the given orbit, depending on
the solar cycle and other magnetic parameters such as L∗, Bmirror
and Beq.
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