Tim must have forgotten PV=nRT from high school chemistry.
Not disagreeing with you here, but I’m trying to learn. I am not a scientist, nor do I pretend to be one or to have any meaningful expertise whatsoever.
Also a given: man-made global warming is insignificant, and Algore and his ilk are completely full of crap.
Moving forward, I recently read an article that said cars get better gas mileage in warm weather because heat expands the air, making it less dense. The less dense the air, the less friction is created by an object passing through it. The less friction on the object, the less energy required to move the object through the air. Therefore, gas mileage is better in warmer, dryer weather, because the air is less dense.
Applying that to baseball and home runs, would it not follow that, all else being equal, a well-hit baseball would travel farther in warmer weather? A simple experiment could prove this: take a pitching machine capable of throwing a baseball 400+ feet. Take an average of a statistically significant number of throws at a cold location, and do the same with the same or similar machine at a warm location. Calibrate the machines so that they are applying the same force at each location.
Perhaps this has already been done. If someone is aware of a link, I’d love to see it.