This also explains the strange noises in the atmosphere.

The clearing of these killer electrons known to exist in the Van Allen Belts caused noise.

[link to www.physorg.com]
cut,
Scientists previously discovered that electrons in the outer radiation belt can extract energy from these chorus waves to reach near-light speed and become killer electrons. The new research, confirmed by the team's THEMIS (Time History of Events and Macroscale Interactions during Substorms) observations, is that the chorus waves can be refracted into the inner portion of the radiation belts by dense plasma near Earth and bounce around from hemisphere to hemisphere within the radiation belts. When this happens, the chorus waves become disorganized and evolve into another type of radio wave called "hiss," according to the team.