Automated Identification of Coronal Holes from Synoptic EUV Maps

@article{Hamada2017AutomatedIO,
  title={Automated Identification of Coronal Holes from Synoptic EUV Maps},
  author={Amr Hamada and Timo Asikainen and Ilpo I. Virtanen and Kalevi Mursula},
  journal={Solar Physics},
  year={2017},
  volume={293},
  pages={1-26}
}
Coronal holes (CHs) are regions of open magnetic field lines in the solar corona and the source of the fast solar wind. Understanding the evolution of coronal holes is critical for solar magnetism as well as for accurate space weather forecasts. We study the extreme ultraviolet (EUV) synoptic maps at three wavelengths (195 Å/193 Å, 171 Å and 304 Å) measured by the Solar and Heliospheric Observatory/Extreme Ultraviolet Imaging Telescope (SOHO/EIT) and the Solar Dynamics Observatory/Atmospheric… 

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