Correlations of current parameters with flash density from winter thunderstorms in Japan

Stephan Vogel, M. Ishii, M. Saito, A. Sugita, D. Natsuno

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Abstract

In this work, Lightning Location System (LLS) data from theJapanese Lightning Detection Network (JLDN) are correlated with lightning current measurements from the New Energy and Industrial Technology Development Organization (NEDO) project which conducted lightning measurements on
wind turbines during 2008-2013. The terminology of active and inactive winter thunderstorms from Fujii et al. (2013) [1] will be used as a reference to classify the discharge characteristics of the particular storm type. The results indicate that winter thunderstorms with a higher lightning
activity are also characterized by higher charge, specific energy, and peak current. On the contrary, inactive winter thunderstorms produce not only fewer discharges but also show lower transferred charge amounts. Average charge and specific energy of individual flashes from very active winter
thunderstorms with more than 1000 discharges are also lower compared to winter thunderstorms with 100 – 1000 discharges. Furthermore, it is shown that the height of the -10 degree isotherm is increasing with increasing lightning activity.
Original languageEnglish
Title of host publicationProceedings of 2017 International Conference on Lightning and Static Electricity
Number of pages6
Publication date2017
Publication statusPublished - 2017
Event2017 International Conference on Lightning and Static Electricity - Nagoya, Japan
Duration: 13 Sep 201715 Sep 2017

Conference

Conference2017 International Conference on Lightning and Static Electricity
CountryJapan
CityNagoya
Period13/09/201715/09/2017

Keywords

  • Winter lightning
  • Upward Lightning
  • Lightning current parameters
  • Lightning Location System
  • Japan

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