Last year, after the AZ an NM monsoons were over, some guy who spent two months on the road with talent and good equipment had a posting of some amazing downpours he was able to witness.
Knowing how heavy water is, and seeing the fluid (both air and water) in motion with the 'splash' effect when the rain began to hit the ground and the outflow associated with it leaves little doubt that there is a effect is real. I'm sure that there are multiple factors including the downflow with the rain dragging the air along, the change in temperature and so on.
You can't see it if you log pressures once an hour and our stations and software allow for these discoveries.
The natural laboratory of isolated huge storms that we're seeing in these time lapse movies makes for an opportunity to see one of these develop, quickly deploy say five or six stations across the expected path, and then plot their readings to see when and where the pressures change, when rain starts, how much outflow compreession raises the pressures, and when they return to a steady state afterwards.
Or we could just model this with our Crays in the basement.
But it is fun to fantasize about such a project.
By the way, does anyone remember the name of the guy who posted those videos, on Vimeo, I think, of last year's monsoons?
Dale