[P-EM09] Space Weather and Space Climate

[PEM09-23] First five years of Syowa cosmic ray observations at the Antarctic

*Kato Chihiro¹、Munakata Kazuoki¹、Kadokura Akira^2,3、Kataoka Ryuho²、Miyake Shoko⁴、Kozai Masayoshi³、Evenson Paul⁵、Hayashi Yuki¹、Masuda Yoshiki¹、Matsumoto Mizuki¹ (1.信州大学、2.国立極地研究所、3.情報・システム研究機構，データサイエンス共同利用基盤施設，極域環境データサイエンスセンター、4.茨城工業高等専門学校、5.デラウェア大学)

キーワード：宇宙線、宇宙天気

Since 2018.2, simultaneous observation of cosmic ray muon and neutron is continued. The operation is quite stable and its duty cycle is higher than 95%. After starting new solar cycle period, there are a few space weather events. These detectors are showing their usefulness by responding to those events. Data is also used to develop a new method to correct "seasonal variation" of NM count rate. We report outcomes and current status of the observation for the last five years.