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Wednesday, January 30, 2013

Nacreous clouds observed on January 6, 2011. These polar stratospheric clouds at 80,000 feet (24,384 m) are the highest of all clouds. They only occur in the polar regions when the stratospheric temperature dips below 100 degrees below zero Fahrenheit (-73 C).

Posted by Randall M. Bagley at 7:49 AM

Nacreous clouds observed on January 6, 2011. These polar stratospheric clouds at 80,000 feet (24,384 m) are the highest of all clouds. They only occur in the polar regions when the stratospheric temperature dips below 100 degrees below zero Fahrenheit (-73 C).

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