Acknowledgement
- The all-sky imager data at Athabasca are available through ISEE/Nagoya
University. Quick-look plots of the OMTI data are available at
http://stdb2.isee.nagoya-u.ac.jp/omti/ and the data can be
accessed from the ERG Science Center operated by ISAS/JAXA and
ISEE/Nagoya University
(https://ergsc.isee.nagoya-u.ac.jp/data/ergsc/ground/camera/omti/asi/).
- The all-sky imager at Athabasca was calibrated using optical
facilities of National Institute of Polar Research, Japan (Ogawa et
al., 2020). It is housed in facilities developed and supported by the
Canada Foundation for Innovation.
- The solar wind data and geomagnetic activity indices (both one-minute
and one-year resolution) were obtained from the SPDF, NASA, USA
(http:// omniweb.gsfc.nasa.gov)
- The GOES spacecraft magnetic field and particle data from magnetic
field (MAG), MAGnetospheric Electron Detector (MAGED) and
MAGnetospheric Proton Detector (MAGPD) were provided by the NOAA
National Geophysical Data Center
(https://satdat.ngdc.noaa.gov/sem/goes/data/).
- Ground-based magnetic field data is the part of following networks.
Athabasca (ATHA) data from this period was part of the AUTUMN network
operated by Athabasca University. Fort Smith (FSMI) is part of CARISMA
(Mann et al., 2008) network. We thank I.R. Mann, D.K. Milling and the
rest of the CARISMA team for data. CARISMA is operated by the
University of Alberta, funded by the Canadian Space Agency. Boulder
(BOU) is a part of the US Geological Survey network. Original data
provided by the USGS Geomagnetism Program
(http://geomag.usgs.gov). All the
magnetic field data are downloaded from the THEMIS website
(http://themis.ssl.berkeley.edu/data/themis/thg/mirrors/mag/).
- We have used the Space Physics Environment Data Analysis Software
(SPEDAS) tool (Angelopoulos et al., 2019) to download and analyze the
1-min geomagnetic activity indices, ground-based magnetic field, and
GOES particle flux data.
- This work is supported by JSPS KAKENHI (16403007, 19403010, 20244080,
23403009, 25247080, 15H05815, and 16H06286).