https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020GL09...
They are receiving Sferics on the lower HF frequencies and tag them with GPS timestamps (with the PPS signal they are in the Nanoseconds precision range). A central server will then do the triangulation.
All with off-the-shelf hardware (STM32, etc.).
Their service is stable for many many years now.
(Offtopic: The STM32H7 ADC is great for many many things)
The former seems to have better coverage especially across the southern hemisphere.
Like at the ECMWF: you can have a look at all beautiful charts for free. But if you want to have the data behind them they want to see big cash.
zeristor•2h ago
I can’t find a way to the current maps of lightning strikes.
nvalis•2h ago
[0]: https://wwlln.net/#maps