On Thursday, 18 June 2020 11:15:16 UTC+1, JGD wrote:
Tudor, thanks for that - it's the kind of order of magnitude intimation
I was looking for.

It was really to counter a notion that hyperlocal (elevation-corrected)
pressure monitoring from multiple pressure sensors in a local array
might have any value but just needed some sort of o-o-m figure to make
the point.

Once mo Why do you want to know?
Is it a problem you wish to apply to a wind generation plant or what?

The phenomenon can be heard quite easily at any wind farm and data across a broad enough scale is likely well documented.If you want to do your own on a field in any park you can set up something similar with the kind of windmills sold at funfairs at sea-sides all over the country and couple it with video with any suitable phone