Where are the lightning hotspots on Earth?

Rachel I Albrecht1, Steven J Goodman2, Dennis Edward Buechler3, Richard J Blakeslee4 and Hugh J Christian Jr3, (1)Universidade de São Paulo, São Paulo, Brazil, (2)NOAA NESDIS, GOES-R Program Office, Greenbelt, MD, United States, (3)University of Alabama in Huntsville, Huntsville, AL, United States, (4)NASA Marshall Space Flight Center, Huntsville, AL, United States