Titan's big rainstorms |
Titan's big rainstorms |
May 6 2015, 05:59 PM
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#1
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Senior Member Group: Members Posts: 3516 Joined: 4-November 05 From: North Wales Member No.: 542 |
Here is an interesting-sounding paper getting into the nitty gritty of how big convective storm systems on Titan might work and look. I particularly recommend the animations of various storm scenarios in the Supporting Materials. Factor out the different vertical and horizontal scales and you might almost be standing there with your umbrella on the point of collapse - or blown inside out.
https://secure.onlinelibrary.wiley.com/secu...MePresent=false |
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May 9 2015, 03:13 PM
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#2
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Member Group: Members Posts: 701 Joined: 1-April 08 From: Minnesota ! Member No.: 4081 |
Very interesting paper indeed! Really BIG equatorial storms on Titan are discussed in another recent (online) paper in Nature geoscience (Nature Geoscience 8, 362–366 (2015) doi:10.1038/ngeo2406). http://www.space.com/29090-titan-methane-s...sand-dunes.html. , concluding such storms may be responsible for sculpting the apparent west to east migration of Titan’s equatorial dunes. As I understand it the storms height reach altitudes where stronger west to east winds exist producing a downdraft gust front at the surface going west to east up to 10 times the velocity of Titan’s usual east to west surface winds.
I may have missed it but I would have liked to seen the authors of these papers model other features of the really big storms like the “arrow storm” in 2010 (with its 1,200 kilometers in length east-to-west and wings that trailed off to the northwest and southwest each 1,500 kilometers long) or the April 2008 storm described in the Schaller et al paper http://www.nature.com/nature/journal/v460/...ature08193.html both of which created clouds far removed from their propagating centers (?due to Rossby wave effects?) |
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