So I enjoy spending some of my free time outside where I can breathe the fresh pollution of the city, however, at other times I like going out of the city and near rivers and lakes. So on Labor Day weekend I figured I should work on my pasty complexion and go to the river!

I saw it was going to be 90 degrees out so based on this I wore as little as possible (much to the liking of the ladies). I showed up with my beach towel and sunscreen but was taken aback when I laid down to notice it was much cooler than what the weather report indicated.

I took this as a simple misunderstanding between the weather girl and her report she reads from and didn't think a lot of it until yesterday in class. I found out that due to land-water heating differences the energy from the water becomes water vapor and cools the area around it which is why it felt cooler by the river.

Evaporation is the key to the heating differences as well as since water is fluid and capable of movement the mixing spreads the available heat over an even greater volume.