北海道における2006/07～2016/17年の冬季雷活動の傾向

カテゴリ: 論文誌(論文単位)

グループ名: 【B】電力・エネルギー部門

発行日: 2021/03/01

タイトル(英語): The Trend of Winter Lightning Activety from 2006/07 to 2016/17 in Hokkaido

著者名: 馬場　賢治（酪農学園大学酪農学研究科/農食環境学群環境共生学類），野田　真由（酪農学園大学酪農学研究科/農食環境学群環境共生学類），上田　博（名古屋大学）

著者名(英語): Kenji Baba (Food and Environment Sciences, Rakuno Gakuen University College of Agriculture), Mayu Noda (Food and Environment Sciences, Rakuno Gakuen University College of Agriculture), Hiroshi Uyeda (Nagoya University)

キーワード: 冬季雷活動，北海道，LLS，大気環境場　　winter lightning activity，Hokkaido area，LLS，atmospheric environments

要約(英語): The characteristics of winter lightning flashes in Hokkaido area were investigated based on Lightning Location System (LLS) data from 2006/07 to 2016/17. The positive lightning was 41% on average over the 11 years, indicating that it was almost the same as previous studies conducted in the Hokuriku district. The total number of lightning flashes in 11-year period showed the largest in November, and the smallest in February. Over the years, the number of lightning in March has been increasing, there has been a statistically significant trend. When approaching low pressure or passing through the cold front, the number of lightning flashes increase due to continuous lightning activity, and lightning exceeding 100kA peak values were observed. On the other hand, at typical atmospheric pressure pattern in winter, the developed convective cloud band repeatedly advects to the west coast of Hokkaido, and once or a few lightning flashes from those bands. Therefore, although the lightning activity term is short, the total number of flashes is increasing.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.141 No.3 （2021）

本誌掲載ページ: 273-279 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejpes/141/3/141_273/_article/-char/ja/