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Thursday, June 04, 2009

Ice Fog over Fairbanks, Alaska

One of the interesting things here at work is trying to puzzle out Fairbank's ice fog - how it generates, how it moves, how it interacts with air pollution.

Here are two interesting time lapse videos (from Paul Jensen) showing the ice fog in motion.



(Feb. 6, 2008) Temperatures are around -45F/-43C in the valley, and dense ice fog forms under the very stable inversion layer. A significant source of the ice fog is quite visible - the university power plant.



(Apparently from 2007) The steam plumes from power plants rise until they encounter a lid in form of a strong inversion layer. Here they flatten out and form ice fog which drifts around erratically.

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