APOD: A Sun Pillar Over Sweden (2012 Dec 18)

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APOD: A Sun Pillar Over Sweden (2012 Dec 18)

Postby APOD Robot » Tue Dec 18, 2012 5:06 am

Image A Sun Pillar Over Sweden

Explanation: Have you ever seen a sun pillar? When the air is cold and the Sun is rising or setting, falling ice crystals can reflect sunlight and create an unusual column of light. Ice sometimes forms flat, six-sided shaped crystals as it falls from high-level clouds. Air resistance causes these crystals to lie nearly flat much of the time as they flutter to the ground. Sunlight reflects off crystals that are properly aligned, creating the sun-pillar effect. In the above picture taken last week, a sun-pillar reflects light from a Sun setting over Östersund, Sweden.

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Re: APOD: A Sun Pillar Over Sweden (2012 Dec 18)

Postby Ann » Tue Dec 18, 2012 5:53 am

People in Stockholm were all abuzz over these light pillars that appeared over the Swedish capital recently. Apparently it's the light from streetlamps and other articficial illumination that is being reflected here.

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Re: APOD: A Sun Pillar Over Sweden (2012 Dec 18)

Postby Chris Peterson » Tue Dec 18, 2012 6:10 am

Ann wrote:People in Stockholm were all abuzz over these light pillars that appeared over the Swedish capital recently. Apparently it's the light from streetlamps and other articficial illumination that is being reflected here.

Yes, these have been featured in several APODs: http://apod.nasa.gov/apod/ap020902.html, http://apod.nasa.gov/apod/ap090112.html.
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Re: APOD: A Sun Pillar Over Sweden (2012 Dec 18)

Postby metleif » Tue Dec 18, 2012 6:41 am

In this case, the ice crystals do not fall from high level clouds. They seem to be a part of the thin ice fog forming at sunset with rapidly falling air temperatures.
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Re: APOD: A Sun Pillar Over Sweden (2012 Dec 18)

Postby starsurfer » Tue Dec 18, 2012 12:46 pm

I've been lucky enough to see a sun pillar! :D
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Re: APOD: A Sun Pillar Over Sweden (2012 Dec 18)

Postby Boomer12k » Tue Dec 18, 2012 1:28 pm

I don't think I have ever seen one, THANKS!!! That is really neat!

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Re: APOD: A Sun Pillar Over Sweden (2012 Dec 18)

Postby Poissant » Tue Dec 18, 2012 2:06 pm

What is the setting, a tourism spot? There are many people in the photo.
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Re: APOD: A Sun Pillar Over Sweden (2012 Dec 18)

Postby Ann » Tue Dec 18, 2012 2:22 pm

Poissant wrote:What is the setting, a tourism spot? There are many people in the photo.


Well, as a Swede with no interest whatsoever in winter sports, I don't exactly know, but I have to agree that this looks tourist-y. Those houses look like the sort of cottages that winter sport freaks might hire for a couple of weeks in the winter.

Östersund, where this picture was taken, is not all that far from Åre, one of the real tourist traps in Sweden.

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Re: APOD: A Sun Pillar Over Sweden (2012 Dec 18)

Postby StarCuriousAero » Tue Dec 18, 2012 6:18 pm

I want to be a tourist in Sweden some day... what a lovely country. Sigh. Oh, also a lovely sun pillar.
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The Farkle Family far from Åre

Postby neufer » Tue Dec 18, 2012 7:27 pm

Click to play embedded YouTube video.


Ann wrote:
Östersund, where this picture was taken,
is not all that far from Åre,
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Re: APOD: A Sun Pillar Over Sweden (2012 Dec 18)

Postby retrogalaxy » Tue Dec 18, 2012 8:59 pm

I bet it is Sunset because there is too much people outside for the morning. Nice candle..
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Re: APOD: A Sun Pillar Over Sweden (2012 Dec 18)

Postby owlice » Tue Dec 18, 2012 9:22 pm

retrogalaxy wrote:I bet it is Sunset because there is too much people outside for the morning. Nice candle..

Yes.
a sun-pillar reflects light from a Sun setting over Östersund, Sweden.
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Re: APOD: A Sun Pillar Over Sweden (2012 Dec 18)

Postby retrogalaxy » Tue Dec 18, 2012 9:58 pm

forget the bet
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Re: APOD: A Sun Pillar Over Sweden (2012 Dec 18)

Postby neufer » Tue Dec 18, 2012 10:00 pm

retrogalaxy wrote:
I bet it is Sunset because there is too much people outside for the morning. Nice candle..

You shouldn't bet too much money before reading the Explanation (i.e., Look up!)

Östersund Sunrise: 9:28 AM Dec. 11
Östersund Sunset: 2:18 PM Dec. 11
owlice wrote:
    Yes.
a sun-pillar reflects light from a Sun setting over Östersund, Sweden.
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Re: APOD: A Sun Pillar Over Sweden (2012 Dec 18)

Postby saturno2 » Tue Dec 18, 2012 11:44 pm

Interesting image over Sweden
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