in the sky
Dec. 20th, 2005 11:45 am![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
urbpan
There were two "sun dogs" visible, too. This arc was above the sun; I don't know the term for it.
urbpanThere were two "sun dogs" visible, too. This arc was above the sun; I don't know the term for it.
urbpanThere were two "sun dogs" visible, too. This arc was above the sun; I don't know the term for it.
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Date: 2005-12-20 05:06 pm (UTC)no subject
Date: 2005-12-20 07:17 pm (UTC)no subject
Date: 2005-12-20 05:54 pm (UTC)no subject
Date: 2005-12-20 07:24 pm (UTC)Sun dogs, also known as parhelia (single parhelion), appear as near-horizontal colored spots or bars on both sides of the sun, at nearly a 22 degree angle. Sun dogs are uncommon and typically appear only when a low sun shines through loose cirrus clouds, e.g., in a milky-white winter afternoon sky. The orientation of the ice crystals involved in this process is important. The crystals are hexagonal cylinders, and they have to be oriented vertically.
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Date: 2005-12-20 06:43 pm (UTC)Man, those sun dogs are hard to catch on film, eh?
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Date: 2005-12-20 07:28 pm (UTC)Yes, very hard, what with the sun being right next to them. Rainbows, butthead, are visible when there is liquid water in the atmosphere between you and the sun, halos form when there are ice crystals. That wikipedia entry has a clever photograph with a building occluding the view of the sun, so the sun dogs are clearly visible.
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Date: 2005-12-20 06:50 pm (UTC)no subject
Date: 2005-12-21 12:27 am (UTC)