Bergin, A.; Chapman, Sandra; Watkins, N.W.; Moloney, N.R.; Gjerløv, Jesper (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-03-20)
Extreme space weather events are rare, and quantifying their likelihood is challenging, often
relying on geomagnetic indices obtained from ground-based magnetometer observations that span multiple
solar cycles. The Dst index ring-current monitor, derived from an hourly average over four low-latitude stations,
is a benchmark for extreme space weather events, and has been extensively studied ...