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Big storm on Saturn
Juramike
post May 4 2011, 02:11 AM
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Another comparison image of Cassini IR and Enhanced Visible compared to an Earth-based image taken at about the same time by Christopher Go:

http://www.flickr.com/photos/31678681@N07/5685274823/

(All images taken at approximately the same time, so the placement of the storm is at center left in the full disk Earth-based view.)


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Juramike
post May 10 2011, 04:15 AM
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May 5 image of big Saturn storm taken by Cassini. This was kinda ugly to process. I ended up doing many overlays/multiplications of the higher-res CB2 layer to enhance detail and cloud structure.

Attached Image


Cruising throught the PVOL database, in the Earth based images of the storm it is become more and more difficult to see the central upwelling - the turbulent cloud deck has wrapped around Saturn to make almost a double-white band.. In the Cassini visible it is also really difficult to discern in visible wavelengths. The center of the storm is still best lit up "bright" (high cloud deck) by MT3 and MT2 filtered images. In visible, it is only barely darker than it's surroundings.


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Juramike
post May 19 2011, 08:18 PM
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Press release on Saturn storm. It has been observed by VIMS and CIRS as well and is doing an impressive job of punching up through the atmospheric layers and dredging up all sorts of stuff as it rearranges Saturn's normally calm belts and zones.

http://www.jpl.nasa.gov/news/news.cfm?rele...ml&rst=3004


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Juramike
post May 22 2011, 11:43 AM
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Planetary Photojournal showing false-color VIMS image of Big Storm on Saturn and a neat explanation of what it found:
http://photojournal.jpl.nasa.gov/catalog/PIA14119

Spoiler alert: Big honkin particles and ammonia pulled up by the storm, and high small particles and ammonia in neat structures just south of the storm!


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Juramike
post Jun 18 2011, 03:38 AM
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Roughly correlated views of the storm on Saturn from Cassini and ground-based observation on June 13-14, 2011.
Interesting how the uplifted ares in Saturn (bright swirls in Methanovision) are dark in the ground-based RGB image.
Use the bright cloud edge and the "pinched" area to the E to help correlate the views.

Attached Image


Much more details on flickr: .


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Juramike
post Jul 12 2011, 04:26 AM
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7-frame CB2 images of Saturn rotation on July 9, 2011 (here) lined up and mosaiced (issues with terminator) to make a strip of the Saturn storm clouds:

Attached Image


Click for full res to check out the cool-o swirly patterns.


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Juramike
post Jul 17 2011, 03:53 PM
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Uh-oh. I think the storm is starting to snuff out. Most recent July 13, 2011 Methanovision composite [MT3,MT2,CB2] shows a much, much smaller upper level swirl. Maybe without a major updraft source the turbulence will work itself out over the next few months?

Attached Image


(The little guy is up in the upper right corner with a slight greenish tint.]


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Juramike
post Nov 18 2011, 03:02 AM
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Planetary Photojournal release of series of natural color images of the the storm as PIA14905.
(for some images they use the CB2 image in place of red to approximate natural color)


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TheAnt
post Sep 4 2013, 07:29 AM
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Massive storm pulls water and ammonia ices from Saturnís depths.

Source: Univ of Winsconsin-Madison
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Juramike
post Sep 4 2013, 02:50 PM
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....and accompanied by a Planetary Photojournal image release: http://photojournal.jpl.nasa.gov/catalog/PIA17044


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JRehling
post Sep 4 2013, 06:11 PM
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Very cool science. For those who don't know, Saturn's weather approximates that of Jupiter except its scale height is much larger because the local acceleration to gravity is about 40% of Jupiter's. Therefore, layers in Saturn's clouds are vertically extended and it's harder to see the diversity of layers.
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