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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Volume 35, issue 3
Ann. Geophys., 35, 583-588, 2017
https://doi.org/10.5194/angeo-35-583-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Ann. Geophys., 35, 583-588, 2017
https://doi.org/10.5194/angeo-35-583-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

ANGEO Communicates 24 Apr 2017

ANGEO Communicates | 24 Apr 2017

Solar 27-day rotational period detected in wide-area lightning activity in Japan

Hiroko Miyahara1, Chika Higuchi2, Toshio Terasawa3,4, Ryuho Kataoka5,6, Mitsuteru Sato7, and Yukihiro Takahashi7 Hiroko Miyahara et al.
  • 1Humanities and Sciences/Museum Carriers, Musashino Art University, Tokyo, 187-8505, Japan
  • 2Tokyo Institute of Technology, Tokyo, 152-8550, Japan
  • 3iTHES, RIKEN, Saitama, 351-0198, Japan
  • 4ICRR, University of Tokyo, Chiba, 277-8582, Japan
  • 5National Institute of Polar Research, Tokyo, 190-8518, Japan
  • 6Department of Polar Science, SOKENDAI, Tokyo, 190-8518, Japan
  • 7Hokkaido University, Hokkaidō, 060-0810, Japan

Abstract. A signal of the 27-day solar rotational period is often observed in cloud and lightning activities over the globe. Here we provide evidence of the 27-day periodicity of lightning activity in Japan using daily observational records of lightning for AD1989–2015. The 27-day period is detected with 4.2 standard deviations, but only in wide-area lightning activity covering more than a 105km2. The 27-day signal is more prominent around the maxima of solar decadal cycles.

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Detailed analyses of the 27-day solar rotational period in cloud and lightning activities may help in untangling the process of solar influence on weather and climate. We analyzed the lightning data in Japan for AD 1989–2015 and found that the 27-day solar rotational period is seen in wide-area lightning activity. The signal was stronger at the maxima of solar decadal cycles. It was also found that the signal of the 27-day period migrates from the southwest to the northeast in Japan.
Detailed analyses of the 27-day solar rotational period in cloud and lightning activities may...
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