Van Allen Probes Empirical Model of the Plasma Environment Inside Geostationary Orbit

Tuesday, 16 December 2014
Brian Larsen1,2, Geoffrey D Reeves1, Reiner H W Friedel1, Michelle F Thomsen3, Ruth M Skoug4, Herbert O Funsten5 and Elizabeth MacDonald6, (1)Los Alamos National Laboratory, Los Alamos, NM, United States, (2)The New Mexico Consortium, Los Alamos, NM, United States, (3)Planetary Science Institute, Los Alamos, NM, United States, (4)Los Alamos Natl Lab, Los Alamos, NM, United States, (5)Los Alamos Natl Laboratory, Los Alamos, NM, United States, (6)NASA Goddard Space Flight Center, Greenbelt, MD, United States
With the Van Allen probes nearing a full precession around the Earth we present a parameterized empirical model of the plasma properties in the inner magnetosphere. Data from the Los Alamos National Laboratory built Helium-Oxygen-Proton-Electron (HOPE) spectrometer on this this unparalleled two-satellite mission provides excellent coverage of the equatorial magnetosphere inside of geostationary, albeit over a limited range of geomagnetic activity. Fusing data and derived products from the two spacecraft a specification of the state of the inner magnetosphere has been created providing species resolved fluxes, partial densities, temperatures, anisotropies, and ratios. This full coverage model reproduces some well know phenomenology and presents some lesser know behaviors providing new insights into details of plasma dynamics inside geostationary orbit.