Differences in published characteristics of GLE60 and their consequences on computed radiation dose rates along selected flight paths

Bütikofer, Rolf; Flückiger, Erwin (February 2013). Differences in published characteristics of GLE60 and their consequences on computed radiation dose rates along selected flight paths. Journal of Physics: Conference Series, 409(1), 012166. Institute of Physics Publishing IOP 10.1088/1742-6596/409/1/012166

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The radiation dose rates at flight altitudes can increase by orders of magnitude
for a short time during energetic solar cosmic ray events, so called ground level enhancements (GLEs). Especially at high latitudes and flight altitudes, solar energetic particles superposed on galactic cosmic rays may cause radiation that exceeds the maximum allowed dosage limit for the general public. Therefore the determination of the radiation dose rate during GLEs should be as reliable as possible. Radiation dose rates along flight paths are typically determined by computer models that are based on cosmic ray flux and anisotropy parameters derived from neutron monitor and/or satellite measurements. The characteristics of the GLE on 15 April 2001 (GLE60) were determined and published by various authors. In this work we compare these
results and investigate the consequences on the computed radiation dose rates along selected flight paths. In addition, we compare the computed radiation dose rates with measurements that were made during GLE60 on board two transatlantic flights.

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