Numerical Models

Space Environment Corporation bases much of its business on the development of robust numerical models of upper atmosphere weather. A suite of ionosphere models provide ionosphere weather for specified geographic regions or global.

  • Ionosphere Forecast Model (IFM) -- is a physics-based ionosphere model used to provide 1, 3, 6 hour forecasts of the global ionosphere from 90 kilometers to 1600 kilometers. It is initiated with a best NOWCAST of the ionosphere for the forecast projection. Major ion species densities, ion temperature and electron temperature are determined.

  • RealTime ABBYNORMAL -- is a physics-based D-region and E-region model driven by NOAA/SEC geophysical indices and GOES satellite measurements of solar Xrays.

  • Coupled Ionosphere thermosphere Electrodynamic Forecast Model (CItEFM) -- is a physics-based ionosphere-thermosphere-electrodynamic (ITE) model if you have not guess from the name. It provides specifications and forecasts of the global ITE system from 90 kilometers to 1600 kilometers altitude. Major ion species densities, ion temperature and electron temperature are determined. The small t in CItEFM indicates that a real thermosphere model is not embedded within the code. The CITEFM, which resides at AFRL Hancsom, has the TFM or Thermosphere Forecast Model, which is created by Tim-Fuller-Rowell and Co. at Space Environment Center...the other SEC. The CItEFM uses a standin-TFM based on the MSIS-90 and HWM-90 empirical models.

  • Low-Latitude Ionosphere Sector Model (LLIONS) -- is a physics-based ionosphere model that provides a specification of the ionosphere in a single magnetic field meridion. The meridion is specified by the user and LLIONS solves the ionosphere conditions between -45 and +45 degrees magnetic latitudes. Major ion species densities, ion temperature and electron temperature are determined. It can be driven by ionosphere observations to provide an excellent weather NOWCAST.

  • Regional Ionospheric Forecast and Specification (RIFS) -- is based on multiple runs of LLIONS, but is aimed at data assimlation into the drivers of the LLIONS code to provide a low-latitude ionosphere weather model.


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