Richard Clark wrote:

There are two mechanisms at work, and they are classically the source
and the load. The source imparts an impulse, the load provides a
complex response. Any impulse's origin is the arrival of a charge.
The load (the antenna feeding the receiver) is very large in
comparison to the volume of charge arriving and all impulses are not
coherent.

Your nano-volt determination appears to neglect the accumulation of
charges which, in turn, does not take into account the reactance of
the load (there has to be a considerable mismatch involved here).

73's
Richard Clark, KB7QHC

I'm not sure of the numbers involved, but as someone who has lived in a
300 inch of snow per season and storms with up to 10 inch/hour plus high
winds, that snow static is real and a real pain in the ass. It makes
small pops as it hits, and eventually you will hear a large amount of
noise apparently from discharge. Dependant on antenna type, etc.

I have no experience with dust.

tom
K0TAR