London photo: rainbow blob

Thu, Jul 31, 2014

I’m sure there is a cool meteorological word for a blob of rainbow all by its lonesome up in the sky, with no end at which a pot of gold could be hiding, but I don’t know what it is.

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4 Comments

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Jay Matteo

Thu, Jul 31, 2014 11:48pm

Looks like you’ve got a Sundog!

http://en.wikipedia.org/wiki/Sun_dog

Dr. Rocketscience

reply to Jay Matteo

Fri, Aug 01, 2014 3:45am

Hard to tell without the sun, horizon, or its twin in the frame, but I don’t think it’s a sundog. It looks too high above the horizon, and lacks the characteristic halo arc through it. Might be a fragment of a circumhorizontal arc. They appear higher in the sky and are big enough to be incomplete like this. (ETA: between my undergraduate advisor and my college roommate, I know enough atmospheric physics to know what search terms to punch into google.)

http://en.wikipedia.org/wiki/Circumhorizontal_arc