Development of WASAVIES (Warning System of AVIation Exposure to SEP); System overview

Sato, Tatsuhiko   ; Yasuda, Hiroshi*; Kataoka, Ryuho*; Yashiro, Seiji*; Kuwabara, Takao*; Shiota, Daiko*; Kubo, Yuki*

When solar energetic particles (SEP) are incident to the atmosphere, they can induce air showers by generating varieties of secondary particles. Such secondary particles can reach the deep into the atmosphere, and enhance the level of radiation doses. This can be a hazard of aircrews. In order to precisely estimate the radiation doses during large solar particle events, we are developing a warning system of aviation exposure to SEP, WASAVIES. The WASAVIES has been tested and verified by making a comparison between the measured and calculated count rates of several neutron monitors during past GLE (ground level enhancement) events. The final goal of our project is to predict the enhancement of radiation doses due to SEP exposure within 6 hours from the GLE onset.