Ya that makes sense but looking it up that doesn’t seem to be a major source of wind and I don’t know why not. Probably has an effect but is order of magnitudes weaker than solar heating and Coriolis effect (which having looked it up seems to be the #2 cause of wind).

Typically wind is dissipated by friction losses with the surface I think (bleeding off speed and energy by making waves, waving trees, and just rubbing against the ground) and wind is generated by heat from the sun (warm air expanding pushing against cold air, creating pressure differentials across thousands of miles).

Because wind is quick to regenerate and this does nothing to stop that the result is probably a pretty small drop in average wind speeds around the new mill and no greater ramifications than slightly less pollen travel in the spring.

The arena thing took like 2.5 years start to finish, not a few weeks. Also with how many millions they spent on advertising and paying union guys to sit in city council I’d be shocked if they didn’t actually want to build in Chinatown.