Bipolar lightning flashes observed at the Säntis Tower: Do we need to modify the traditional classification?

• Bipolar Lightning Flashes
• Mohammad Azadifar, Farhad Rachidi, Marcos Rubinstein, Vladimir A. Rakov, Mario Paolone, Davide Pavanello

• Journal of Geophysical Research Atmospheres, December 2016, American Geophysical Union (AGU)
• DOI: 10.1002/2016jd025461