Climatological Features of Strong Winds Caused by Extratropical Cyclones around Japan

Abstract We examined the climatological features of strong winds associated with extratropical cyclones around Japan during 40 seasons between November and April from 1979/80 to 2018/19 using reanalysis data. Our assessments revealed that caused most (80%–90%). Notably, contribution explosively developing is larger (70%–80%). The are mainly related warm conveyor belt (WCB) cold (CCB) inside explosive cyclones. Moreover, tend be distributed widely over southwestern quadrant This due intensification horizontal pressure gradient mature Siberian high extending Eurasian continent Japan. investigated regionality by highlighting three areas frequencies winds: area Hokkaido (i.e., northernmost island Japan; A), Sea side (area B) Pacific Ocean C) main seasonal change in frequency differ each area, which reflects activities CCB, head CCB WCB, WCB bring A, B, C, respectively. timing appearance these windstorms life cycles typical cases highlighted this study consistent observed Europe.