Heidelberg 2022 – wissenschaftliches Programm
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EP: Fachverband Extraterrestrische Physik
EP 5: Near Earth Space
EP 5.8: Vortrag
Dienstag, 22. März 2022, 18:30–18:45, EP-H1
Solar energetic particle event on 28 October 2021 as seen by the neutron monitor network — •Christian Steigies1 and Rolf Bütikofer2 — 1Christian-Albrechts-Universität zu Kiel, Germany — 2Universität Bern, Switzerland
The first solar energetic particle event during the current solar cycle 25 observed on ground, a so-called ground level enhancement (GLE), was detected on 28 October 2021 by a few neutron monitors of the worldwide network. At 16:09 UT the Athens GLE Alert system issued successfully an automatic alert. After the initial rapid increase in cosmic ray (CR) intensity, it slowly declined to background level within several hours. During times of raised CR intensities, the ionization rates in the atmosphere are increased and thereby radiation dose rates at aircraft altitudes may be enhanced depending on the location and the altitude. We present a first GLE analysis and assess the additional radiation doses that may be acquired on selected flight routes.