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A fast and accurate operational model of ionospheric electron density
Author(s) -
Schoendorf J.,
Rabitz H.,
Li G.
Publication year - 2003
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2002gl016649
Subject(s) - thermosphere , ionosphere , grid , computer science , space weather , representation (politics) , international reference ionosphere , electron density , statistical physics , computational physics , total electron content , geophysics , physics , electron , geodesy , geology , quantum mechanics , politics , political science , law , tec
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 10 3 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.