Auroral alert version 1.0: two-step automatic detection of  sudden aurora intensification from all-sky JPEG images

Yamauchi, Masatoshi; Brändström, Urban

doi:https://doi.org/10.5194/gi-12-71-2023

Articles | Volume 12, issue 1

https://doi.org/10.5194/gi-12-71-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gi-12-71-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 12, issue 1

18 Apr 2023

| 18 Apr 2023

Auroral alert version 1.0: two-step automatic detection of sudden aurora intensification from all-sky JPEG images

Masatoshi Yamauchi and Urban Brändström

Supplement

https://doi.org/10.5194/gi-12-71-2023-supplement

Data sets

Real-time and archived data Swedish Institute of Space Physics Kiruna Atmospheric and Geophysical Observatory (IRF-KAGO) https://www.irf.se/en/about-irf/data/

All-sky camera in Kiruna Swedish Institute of Space Physics Kiruna Atmospheric and Geophysical Observatory (IRF-KAGO) https://www.irf.se/alis/allsky/krn/

Geomagnetic field data Swedish Institute of Space Physics Kiruna Atmospheric and Geophysical Observatory (IRF-KAGO) https://www.irf.se/maggraphs/iaga

Auroral index Swedish Institute of Space Physics Kiruna Atmospheric and Geophysical Observatory (IRF-KAGO) https://www.irf.se/alis/allsky/nowcast/

Short summary

Potential users of all-sky aurora images even include power companies, tourists, and aurora enthusiasts. However, these potential users are normally not familiar with interpreting these images. To make them comprehensive for more users, we developed an automatic evaluation system of auroral activity level. The method involves two steps: first making a simple set of numbers that describes the auroral activity and then further simplifying them into several levels (Level 6 is an auroral explosion).