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Emulating and calibrating the multiple-fidelity Lyon–Fedder–Mobarry magnetosphere–ionosphere coupled computer model

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  • Matthew J. Heaton
  • William Kleiber
  • Stephan R. Sain
  • Michael Wiltberger

Abstract

type="main" xml:id="rssc12064-abs-0001"> The Lyon–Fedder–Mobarry global magnetosphere–ionosphere coupled model LFM-MIX is used to study Sun–Earth interactions by simulating geomagnetic storms. This work focuses on relating the multifidelity output from LFM-MIX to field observations of ionospheric conductance. Given a set of input values and solar wind data, LFM-MIX numerically solves the magnetohydrodynamic equations and outputs a bivariate spatiotemporal field of ionospheric energy and flux. Of particular interest here are LFM-MIX input settings required to match corresponding output with field observations. To estimate these input settings, a multivariate spatiotemporal statistical LFM-MIX emulator is constructed. The statistical emulator leverages the multiple fidelities such that the less computationally demanding yet lower fidelity LFM-MIX is used to provide estimates of the higher fidelity output. The higher fidelity LFM-MIX output is then used for calibration by using additive and non-linear discrepancy functions.

Suggested Citation

  • Matthew J. Heaton & William Kleiber & Stephan R. Sain & Michael Wiltberger, 2015. "Emulating and calibrating the multiple-fidelity Lyon–Fedder–Mobarry magnetosphere–ionosphere coupled computer model," Journal of the Royal Statistical Society Series C, Royal Statistical Society, vol. 64(1), pages 93-113, January.
    • Handle: RePEc:bla:jorssc:v:64:y:2015:i:1:p:93-113
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    File URL: http://hdl.handle.net/10.1111/rssc.2014.64.issue-1
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    Cited by:

    1. Mahdi Hosseinpouri & Majid Jafari Khaledi, 2019. "An area-specific stick breaking process for spatial data," Statistical Papers, Springer, vol. 60(1), pages 199-221, February.

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