I have an NASA Inspire VLF-3 radio receiver kit that I'm going to put together. It amplifies VLF electromagnetic signals that are already in the audio frequency range and makes them audible. One of the interesting things that it may make audible are VLF whistlers, signals that are triggered by lightning strikes and produced by the response of charged particles in the ionosphere orbiting around lines of the Earth's magnetic field.
I know that there are both spacecraft and ground stations that detect and report lightning activity, but are there websites where I can get "lightning frequency maps" in near-real time (worldwide)? I live in Asia near 25 N latitude.
I've asked separately What are the optimal times and conditions to listen for whistlers?
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