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Statistical calibration of complex computer models: A case study with the Lyon-Feder-Mobarry model of the magnetosphere

Date: 
Monday 5th September 2011 - 16:00 to 16:30
Venue: 
INI Seminar Room 1
Session Title: 
Computer Simulators and Physical Experiments II
Session Chair: 
A. O'Hagan
Abstract: 
The magnetosphere is the region of the Earth's magnetic field that forms a protective bubble which impedes the transfer of energy and momentum from solar wind plasma. The Lyon-Fedder-Mobarry model is used for coupled magnetosphere-ionosphere simulation and to model the eff ect of electron storms on the upper atmosphere. This model is generally run in a high-performance computing environment and the output represents a bivariate spatial-temporal field. In this work, we outline an approach for calibrating this computer model and quantifying the uncertainty in the calibration parameters that combines the computationally expensive but sparser high-resolution output with the lower fidelity but computationally inexpensive low-resolution output.
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University of Cambridge Research Councils UK
    Clay Mathematics Institute London Mathematical Society NM Rothschild and Sons