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by jaguar
Tue Jan 13, 2009 4:05 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Unusual Light Pillars Over Latvia (2009 Jan 12)
Replies: 176
Views: 185588

Re: Unusual Light Pillars Over Latvia (2009 January 12)

The "fog" in the picture is probably ice fog. Ice fog forms when the surface gets colder than the dew point of the air/moisture mix adjacent to the surface. This effect is rather common in very cold locations where cold air is caught in a bowl-like area (Fairbanks, AK, with -40C ground tem...