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by Grouchycuss
Mon Jan 12, 2009 4:48 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Unusual Light Pillars Over Latvia (2009 Jan 12)
Replies: 176
Views: 191281

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

I notice that there appears to be visible stars overhead in these pictures, which tells me, "clear sky". The frost is gathering on the tree limbs, 10F or below, and no wind. I am guessing that there is a minor temperature inversion due to the extreme cold and that the temp is higher aloft ...