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An empirical model of the ionospheric electric potential
Author(s) -
Ridley A. J.,
Crowley G.,
Freitas C.
Publication year - 2000
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 - 10.1029/1999gl011161
Subject(s) - ionosphere , empirical modelling , electric field , linear model , interplanetary magnetic field , geophysics , linear regression , electric potential , interplanetary spaceflight , physics , computer science , computational physics , magnetic field , solar wind , voltage , simulation , quantum mechanics , machine learning
We present an empirical model of the ionospheric electric potential based on output from the assimilative mapping of ionospheric electrodynamics technique (AMIE). The model is derived using a multivariable linear regression analysis technique to relate the potential at each grid point to the interplanetary magnetic field B y and B z components. AMIE output over a one week period was used to construct the model. The results of the model are very similar to other electric potential models; namely, the background pattern and the model response to B y and B z are typical. The unique aspect of this model is the use of the linear response to changes in IMF for the forward prediction of the potential pattern. We show an example of how the model can significantly improve predictions of the potential when it is coupled to a real‐time specification model such as the real‐time version of AMIE.