October 13, 2005


I was rereading a text about atmospheric chemistry today. Air quality is at its worst in the summer when slow-moving high pressure systems wander by. The high pressure system creates a temperature inversion, trapping emissions near the surface. One of the best ways to ventilate this surface layer is through convection, like in a summer cumulonimbus cloud. Which got me reading about storm cells, and then about supercells which are like turbocharged cumulous clouds delivering softball sized hail and tornados. Here are some terribly beautiful pictures of supercells in the American midwest.


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