Using cross-correlation techniques to assess the validity of AP8 at low altitude |
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Authors: | AL Vampola |
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Institution: | Space Environmental Effects, P.O. Box 10225, Torrance, CA 90505, U.S.A. |
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Abstract: | Background effects, such as single event upsets, are used as proxy data sets to evaluate AP8 at low altitude. The approach is to use a 2-D (longitude and latitude) cross-correlation between the background data set and the current-epoch AP8 predicted fluxes. The technique can be used to determine the energy of the particle that is producing a particular effect. This cross-correlation technique shows that using AP8 with a present-epoch magnetic field model accurately predicts the present location of the South Atlantic Anomaly proton flux enhancement and that a dual-peaked intensity structure above 100 MeV in the model is an artifact of AP8 and its interpolation routines. |
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