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SAMI3 Low-to-Mid-Latitude Ionosphere

CCMC Services available for SAMI3
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Model Developer(s)
Joseph Huba, Glenn Joyce, Marc Swisdak
Plasma Physics Div., Naval Research Laboratory and Icarus Research, Inc.

Model Description
SAMI3 (Sami3 is Also a Model of the Ionosphere) is three-dimensional global ionospheric model based on the two-dimensional model SAMI2 [Huba et al., 2000, 2008]. The SAMI3 calculates the plasma and chemical evolution of seven ion species (H+, He+, N+, O+, NO+, N2+ and O2+) in the altitude range 85 km to 20,000 km. The ion temperature equation is solved for three ion species (H+, He+, and O+) as well as the electron temperature equation. Ion inertia is included in the ion momentum equation for motion along the geomagnetic field. An offset, tilted dipole geomagnetic field is used, and the plasma is modeled from hemisphere to hemisphere. High altitude boundary conditions are not needed since a complete ionospheric flux tube is modeled. In addition, the E x B drift motion of the plasma is included for both zonal electric fields (vertical drifts) and meridional electric fields (zonal drifts). The neutral composition and temperature are provided by NRLMSISE00 model and the neutral winds are obtained from the HWM models. SAMI3 uses a unique, nonorthogonal, nonuniform, fixed grid.

Model Input

Where to get parameters:
AP, F10.7

Model Output

References and relevant publications

Relevant links
SAMI2 Website

CCMC Contact(s)


Developer Contact(s)


National Aeronautics and Space Administration Air Force Materiel Command Air Force Office of Scientific Research Air Force Research Laboratory Air Force Weather Agency NOAA Space Environment Center National Science Foundation Office of Naval Research

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