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by trekbike
Mon Jan 12, 2009 2:04 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Unusual Light Pillars Over Latvia (2009 Jan 12)
Replies: 176
Views: 191327

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

My guess is like many others. The density of the ice crystals is greater closer to the ground and a change in temperature as the light moves skyward causing gradally fanning or scattering of the light. The word temperature inversion came to mind. :?: I hadn't thought about wind causing the crystals ...