APOD: A Rainbow Pileus Cloud over Zimbabwe (2014 Feb 19)

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APOD: A Rainbow Pileus Cloud over Zimbabwe (2014 Feb 19)

Postby APOD Robot » Wed Feb 19, 2014 5:16 am

Image A Rainbow Pileus Cloud over Zimbabwe

Explanation: Yes, but how many dark clouds have a multicolored lining? Pictured, behind this darker cloud, is a pileus iridescent cloud, a group of water droplets that have a uniformly similar size and so together diffract different colors of sunlight by different amounts. The above image was taken just before sunset when it was noticed by chance by a photographer in Murambi East, near Odzi Valley and the Mtanda Range of Zimbabwe. Also captured were unusual cloud ripples above the pileus cloud. The formation of a rare pileus cloud capping a common cumulus cloud is an indication that the lower cloud is expanding upward and might well develop into a storm. In this case, however, only a few minutes after the colorful cloud was noticed, it disappeared.

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Re: APOD: A Rainbow Pileus Cloud over Zimbabwe (2014 Feb 19)

Postby Boomer12k » Wed Feb 19, 2014 9:32 am

Yet another interesting phenomena, and we should be grateful someone was there to photograph this rare occurrence.


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Re: APOD: A Rainbow Pileus Cloud over Zimbabwe (2014 Feb 19)

Postby Markus Schwarz » Wed Feb 19, 2014 9:35 am

Looks like a UFO lifting off :)
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Re: APOD: A Rainbow Pileus Cloud over Zimbabwe (2014 Feb 19)

Postby Indigo_Sunrise » Wed Feb 19, 2014 12:01 pm

Interesting image.

Now, can someone point out the invisible cat that is supposed to be in the last link of the description? The one in the 'disappeared' link..?

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Re: APOD: A Rainbow Pileus Cloud over Zimbabwe (2014 Feb 19)

Postby Markus Schwarz » Wed Feb 19, 2014 12:23 pm

Indigo_Sunrise wrote:Now, can someone point out the invisible cat that is supposed to be in the last link of the description? The one in the 'disappeared' link..?

Spoiler warning!
CamouflagecatMarked.jpg
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Re: APOD: A Rainbow Pileus Cloud over Zimbabwe (2014 Feb 19)

Postby neufer » Wed Feb 19, 2014 2:07 pm

Click to play embedded YouTube video.



Markus Schwarz wrote:
Looks like a UFO lifting off :)
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Re: APOD: A Rainbow Pileus Cloud over Zimbabwe (2014 Feb 19)

Postby MrSpectroscopy » Wed Feb 19, 2014 4:39 pm

Judging by the shape of the upper cloud, it is not composed of droplets (like the lower cumulus), but ice crystals.
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Re: APOD: A Rainbow Pileus Cloud over Zimbabwe (2014 Feb 19)

Postby neufer » Wed Feb 19, 2014 5:29 pm

MrSpectroscopy wrote:
Judging by the shape of the upper cloud, it is not composed of droplets (like the lower cumulus), but ice crystals.

It is probably composed of tiny (recently condensed) water droplets (unlike the lower cumulus).
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Re: APOD: A Rainbow Pileus Cloud over Zimbabwe (2014 Feb 19)

Postby Anthony Barreiro » Wed Feb 19, 2014 6:39 pm

Click back and forth between the cropped version of this image that appears on today's apod page and the full version that appears when you click on the front-page image. The full image is much more pleasantly proportioned, at least to my eye.
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Re: APOD: A Rainbow Pileus Cloud over Zimbabwe (2014 Feb 19)

Postby Ann » Wed Feb 19, 2014 6:59 pm

Two of the more appealing aspects of planet Earth is that it has iridescent clouds (okay, rainbow pileus clouds) and cats!!! :-D :kitty:

Ah, Close Encounter of the Third Kind. That was a long time ago. I was a little disappointed that the video ended before we saw the pre-E.T.'s that inspired Spielberg to create his long-faced blue-eyed castaway on Earth who just wanted to phone home.

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Re: APOD: A Rainbow Pileus Cloud over Zimbabwe (2014 Feb 19)

Postby julianm3 » Wed Feb 19, 2014 7:29 pm

Nice work Mr. Lowenstein. Talk about the right place at the right time . . .
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Re: APOD: A Rainbow Pileus Cloud over Zimbabwe (2014 Feb 19)

Postby Ron-Astro Pharmacist » Wed Feb 19, 2014 8:37 pm

This phenomenon deserves its own name. Maybe it could be:

rainb'halo
(a "rainbow-like" halo cloud) ??

Other suggestions welcome… "Rainbow Pileus Cloud" doesn't capture its coolness.
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Re: APOD: A Rainbow Pileus Cloud over Zimbabwe (2014 Feb 19)

Postby Ann » Wed Feb 19, 2014 8:43 pm

Anthony Barreiro wrote:Click back and forth between the cropped version of this image that appears on today's apod page and the full version that appears when you click on the front-page image. The full image is much more pleasantly proportioned, at least to my eye.


And some of the links are just stunning! :shock: :D

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Re: APOD: A Rainbow Pileus Cloud over Zimbabwe (2014 Feb 19)

Postby Anthony Barreiro » Wed Feb 19, 2014 9:27 pm

Ann wrote:
Anthony Barreiro wrote:Click back and forth between the cropped version of this image that appears on today's apod page and the full version that appears when you click on the front-page image. The full image is much more pleasantly proportioned, at least to my eye.


And some of the links are just stunning! :shock: :D

Ann

Wow.
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Re: APOD: A Rainbow Pileus Cloud over Zimbabwe (2014 Feb 19)

Postby DavidLeodis » Thu Feb 20, 2014 1:40 pm

It's a fascinating image and what luck to be there to take the photo as the view was soon lost according to the explanation.

I'm confused that the "above image" link does not bring up the image used for the APOD. As I find it interesting to know when and where APOD images were taken I thought that the "above image" link may give me the date and possibly the time. Through the APOD image Exif properties I have however found that it was taken on "January 28, 2014 6:19:18PM (timezone not specified)".

PS. I saw the cat quickly so I then spent some time giving that image a good look at but I only saw that one cat so I assume there are no more! :)
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