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You are browsing the archive for atmospheric optics Archives - Dan's Wild Wild Science Journal.

24 October 2014

Circumzenithal Arc over Maryland

The halo near the sun is at 22 degrees, and the bright spot to the left is a sundog (or more technically a Parahelia). Now, Look at the top of the pic, and you see something rather more rare: a CIRCUMZENITHAL ARC. I took the picture (with my newly arrived iPhone 6) just before 5 PM EDT (21 GMT) this Friday evening here in Salisbury,Maryland. The image below from Les …

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15 May 2013

Circumscribed Halo over Ocean City In Maryland On Tuesday

Correction: Hat tip to Daniel Linek who spotted my mistake. This is a CIRCUMSCRIBED Halo. Not a Circumzenithal Arc . See here: http://www.atoptics.co.uk/halo/circum.htm The title to this post has also been corrected. You can read more about this on the great Atmospheric Optics site: http://www.atoptics.co.uk/halo/cza.htm I saw one in Greenland (and at the South Pole for a few seconds). The bottom band I believe is a circumhorizon arc.

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