A fast and accurate operational model of ionospheric electron density

J. Schoendorf, H. Rabitz, G. Li

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


High dimensional model representation (HDMR), a technique useful for reducing the computational burden of complex geophysical models, is applied to a global first principles model of the ionosphere/thermosphere system. HDMR captures the input-output relationship of a model with a series of correlation functions that accurately represents the original model. The resulting Fully Equivalent Operational Model (FEOM) of ionospheric electron density ([e]) described herein is derived from the Integrated Space Weather Prediction Model (ISM). It reproduces ISM [e] with errors of less than 3% over 97% of the three-dimensional ISM grid. The observed factor of 103 speed up in CPU time demonstrates the feasibility of using HDMR to construct a fast and accurate ionospheric model based on first principles model output.

Original languageEnglish (US)
Pages (from-to)45-1 - 45-4
JournalGeophysical Research Letters
Issue number9
StatePublished - May 1 2003

All Science Journal Classification (ASJC) codes

  • Geophysics
  • General Earth and Planetary Sciences


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