Ed Stockard writes that, per Les Crowley of Atmospheric Optics, the above image contains "at least 11 different optical phenomena." First person to name four wins an iTunes card!
Visit Atmospheric Optics picture of the day feature here.
Find more coverage of Summit Station here.
Visit Ed Stockard's flickr site here.
Link to NSF-funded cloud structure research led by Von Walden (Idaho State University) here.