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Venus Express
Rakhir
post Jun 27 2006, 07:21 AM
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New press release today.

Double vortex at Venus South Pole unveiled

http://www.esa.int/esaCP/SEMYGQEFWOE_index_0.html
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Guest_DonPMitchell_*
post Jun 29 2006, 08:32 PM
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QUOTE (Rakhir @ Jun 27 2006, 12:21 AM) *
New press release today.

Double vortex at Venus South Pole unveiled

http://www.esa.int/esaCP/SEMYGQEFWOE_index_0.html


Wonderful images. The north polar vortex was discovered and imaged by the Pioneer Venus orbiter. The VIRTIS team has a nice page about this, with discussion of prior work: Polar Vortex
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hendric
post Jun 29 2006, 08:52 PM
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In case there were any other morons like me who couldn't "get" the double vortex, you're only "seeing" the night-side half of the vortex in the pictures on ESA's webpage. The dayside half of the vortex is washed out!

EDIT: *sigh*, nevermind. I'm a moron (see above)


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The Messenger
post Jun 29 2006, 09:28 PM
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QUOTE (hendric @ Jun 29 2006, 02:52 PM) *
In case there were any other morons like me who couldn't "get" the double vortex, you're only "seeing" the night-side half of the vortex in the pictures on ESA's webpage. The dayside half of the vortex is washed out!

EDIT: *sigh*, nevermind. I'm a moron (see above)

Me too rolleyes.gif

I would love to know how the density of the nightime vortex compares with the daytime - does each vortex unwind and expand during the day, and compress and wind up at night? Or visa versa?

Or is this just where the key is - the one inserted in the atmosphere to wind it up to superrotational velocities cool.gif
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elakdawalla
post Jun 29 2006, 09:43 PM
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I sorted out the images at different wavelengths by date and put them on to a page here:
http://www.planetary.org/explore/topics/ve..._southpole.html

One strange thing: According to Hakan Svedhem there were six "slots" in which they could perform imaging, and most of the releases show six views of Venus' south pole. But in the "movie" that they released of the 5-micron image data, there is a 7th image (I think the second-to-last image in the sequence might be the extra one?).
Attached Image


When I annotated the animation with date/range information I made a guess as to what date/range it might be from. But after I tracked down this image from the presentation Svedhem made to VEXAG I don't think I guessed right.
Attached Image


Maybe that animation contains two views from "Slot #4", from the beginning and end of the observation period?

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Guest_DonPMitchell_*
post Jul 1 2006, 10:38 AM
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Thanks for gathering the images up on your blog. VIRTIS looks like it could reveal a lot more about the circulation of the atmosphere.

It looks like there has been progress in numerical modeling of the atmosphere too: Venus Simulations
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ustrax
post Jul 3 2006, 02:13 PM
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From today's update:

'Activities of Medium Term Planning 003 will start now with great focus on the Earth occultations season that starts on 11 July and will continue till the end of August.'


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ustrax
post Jul 12 2006, 01:04 PM
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Monica Talevi just e-mailed me...There are news from Venus, stay alert:

"Have a look to website this afternoon: we are about to post a new science
release on Venus Express!"

smile.gif


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elakdawalla
post Jul 12 2006, 04:25 PM
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Here it is...lots of nifty new animations!

Flying over the cloudy world science updates from Venus Express

Thanks for the heads up, ustrax! smile.gif I'll be digging into these pictures thoroughly today...

--Emily


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Guest_AlexBlackwell_*
post Jul 12 2006, 04:35 PM
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QUOTE (elakdawalla @ Jul 12 2006, 04:25 PM) *
Thanks for the heads up, ustrax! smile.gif I'll be digging into these pictures thoroughly today...

Nice PR eye candy by ESA but there is still a serious gap in science due to the ongoing PFS malfunction, notwithstanding the claim that "other instruments will cover some of the PFS objectives."
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ustrax
post Jul 12 2006, 04:41 PM
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QUOTE (elakdawalla @ Jul 12 2006, 05:25 PM) *
Here it is...lots of nifty new animations!

Flying over the cloudy world science updates from Venus Express

Thanks for the heads up, ustrax! smile.gif I'll be digging into these pictures thoroughly today...

--Emily


Incredible ain't it Emily?... biggrin.gif
This mission will surprise us just more and more...


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elakdawalla
post Jul 12 2006, 04:52 PM
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I realize now that these are the pictures that they said they'd release in association with their presentations to the 36th COSPAR, to take place in Beijing on 16-23 July. There's a special session on Venus Express. Wish I could be there but travel to China is a bit out of the question at the moment sad.gif

--Emily


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Guest_AlexBlackwell_*
post Jul 12 2006, 05:07 PM
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QUOTE (elakdawalla @ Jul 12 2006, 04:52 PM) *
Wish I could be there but travel to China is a bit out of the question at the moment sad.gif

Have you ever been to China before? If not, I highly recommend the trip.
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The Messenger
post Jul 12 2006, 05:21 PM
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Does anyone have a feel for the mean polarity of the Venus atmosphere is, with respect to the Earths? O2 and N2 are nonpolar, but I'm not sure about CO2, and H2O is highly polar - so are many sulfur compounds and all acids...

Polarity could come into play in interactions with the solar magnetosphere and the solar wind...magnitoshear?
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elakdawalla
post Jul 12 2006, 07:42 PM
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QUOTE (AlexBlackwell @ Jul 12 2006, 10:07 AM) *
Have you ever been to China before? If not, I highly recommend the trip.
Nope...Lou Friedman has grabbed all the China trip opportunities to date. smile.gif Can't complain though as I have been sent to Cambridge, Noordwijk (in April! the tulips were fabulous), and Devon Island. Oh, and Darmstadt too, though Darmstadt in winter I do not recommend. --Emily


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