The Effects of Fluid Dynamics on Fallout Distribution

Our understanding of fallout in the earlier years was modeled after flat terrain, right? And then the test for taking place. So we thought the fallout would act in a certain way and then it was only until we started to say, oh, but then there's this whole weather thing and there's... Urban environments as well. You have like a sun-heated parking lot creates a localized updraft, drawing in air from surrounding areas. And skyscrapers work like artificial mountains. Physicists predict that the flow would launch skyward in what they call the fountain effect.