Cutting A Path Through the Clouds

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I'm in State College for the American Meteorological Society's Summer Meeting. I was on my way to McD's (State College is a Pepsi town) to get my morning fix of Diet Coke when I looked up in the parking lot to see the jet plane's condensation trail cutting through the cirrocumulus clouds (click on photo to enlarge). The soot particles attract the moisture from the ice crystals that make up the cirrocumulus clouds causing the ice crystals to dissipate.

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