Articles | Volume 36, issue 2
Ann. Geophys., 36, 633–640, 2018
Ann. Geophys., 36, 633–640, 2018

ANGEO Communicates 18 Apr 2018

ANGEO Communicates | 18 Apr 2018

Solar rotational cycle in lightning activity in Japan during the 18–19th centuries

Hiroko Miyahara et al.

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Old diaries kept in Japan tell us a surprising fact. The 27-day solar rotational period in thunder and lightning activities had been persistent for the past 300 years. The intensity is found to be more prominent as solar activity increases. The physical mechanism of the Sun–Climate connection is yet uncertain, an important link surely exists between the solar activity and terrestrial climate even at a meteorological timescale.