loading page

STRIDE-CH: Sub-Transition Region Identification of Ensemble Coronal Holes
  • +5
  • Jaime Landeros,
  • Michael S Kirk,
  • Charles Nickolos Arge,
  • Laura Boucheron,
  • Jie Zhang,
  • Vadim M Uritsky,
  • Matthew Dupertuis,
  • Jeremy Grajeda
Jaime Landeros

Corresponding Author:[email protected]

Author Profile
Michael S Kirk
Charles Nickolos Arge
Laura Boucheron
Jie Zhang
Vadim M Uritsky
Matthew Dupertuis
Jeremy Grajeda


Coronal Holes (CH) are large-scale, low-density regions in the solar atmosphere which may expel high-speed solar wind streams that incite hazardous, geomagnetic storms. Segmentation of CH boundaries may aid in validating predictive coronal and solar wind models but has proved difficult due to similar appearances as filaments and the tendency for dense coronal plasmas to block underlying CHs in Extreme Ultraviolet (EUV) imagery. We propose an automated detection algorithm of CHs which revisits ground-observed, chromospheric He I 10830 Å line imagery and underlying photospheric magnetograms as drivers to circumvent these issues and provide a complementary method to the space-observed, coronal EUV emission-driven methods that have been widely adopted in the community. Classical computer vision techniques are applied to imbue the routine with design variables based in radiative and magnetic properties of CHs, as well as produce an ensemble of boundaries with quantified intra-algorithm uncertainty. This method is science-enabling towards future studies of coronal hole formation and variability from a mid-atmospheric perspective.Abstract content goes here
28 Apr 2024Submitted to ESS Open Archive
02 May 2024Published in ESS Open Archive