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Substorm Onset Prediction using Machine Learning Classified Auroral Images
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  • Pascal Sado,
  • Lasse Boy Novock Clausen,
  • Wojciech Jacek Miloch,
  • Hannes Nickisch
Pascal Sado
University of Oslo, University of Oslo

Corresponding Author:pascal.sado@fys.uio.no

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Lasse Boy Novock Clausen
University of Oslo, University of Oslo
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Wojciech Jacek Miloch
University of Oslo, University of Oslo
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Hannes Nickisch
Philips Research, Philips Research
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Abstract

We classify all sky images from 4 seasons, transform the classified information into time-series data to include information about the evolution of images and combine these with information on the onset of geomagnetic substorms. We train a lightweight classifier on this dataset to predict the onset of substorms within a 15 minute interval after being shown information of 30 minutes of aurora. The best classifier achieves a balanced accuracy of 61% with a recall rate of 47% and false positive rate of 24%. We show that the classifier is limited by the strong imbalance in the dataset of approximately 50:1 between negative and positive events. All software and results are open source and made freely available.