Van Allen Probes Bibliography is from August 2012 through September 2021 Notice:

Radial diffusion comparing a THEMIS statistical model with geosynchronous measurements as input
Author  Li, Zhao; Hudson, Mary; Chen, Yue; 
Keywords  outer boundary; radial diffusion; Radiation belt; Van Allen Probes 
Abstract  The outer boundary energetic electron flux is used as a driver in radial diffusion calculations, and its precise determination is critical to the solution. A new model was proposed recently based on Time History of Events and Macroscale Interactions during Substorms (THEMIS) measurements to express the boundary flux as three fit functions of solar wind parameters in a response window that depend on energy and which solar wind parameter is used: speed, density, or both. The Dartmouth radial diffusion model has been run using Los Alamos National Laboratory (LANL) geosynchronous satellite measurements as the constraint for a onemonth interval in July to August 2004, and the calculated phase space density (PSD) is compared with GPS measurements, at magnetic equatorial plane crossings, as a test of the model. We also used the PSD generated from the Shin and Lee model as constraint and examined it by computing the error relative to the LANL geosynchronous spacecraft datadriven run. The calculation shows that there is overestimation and underestimation at different times; however, the direct insertion of the statistical model can be used to drive the radial diffusion model generally, producing the phase space density dropout and increase during a storm. Having this model based on a solar wind parameterized data set, we can run the radial diffusion model for storms when particle measurements are not available as input. We chose the Whole Heliosphere Interval as an example and compared the result with MHD/testparticle simulations, obtaining better agreement with GPS measurement using the diffusion model, which incorporates atmospheric losses and an initial equilibrium radial profile. 
Year of Publication  2014 
Journal  Journal of Geophysical Research: Space Physics 
Volume  119 
Number of Pages  18631873 
Section  
Date Published  03/2014 
ISBN  
URL  http://doi.wiley.com/10.1002/jgra.v119.3 
DOI  10.1002/jgra.v119.310.1002/2013JA019320 