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Post by ediacara on Apr 16, 2009 19:26:58 GMT
Dear all, do you know any kind of collection of southern hemisphere NLC observations? Some South American observations might exist, or some of Antarctica, as the AIM image also shows one: images.aad.gov.au/img.py/2005.jpgEven in southernmost parts of New Zealand might have some. I have never met one from the south. I wonder if the lack of observations might only be caused by the less populated areas, or what? By the way - our season is getting closer! :-) |
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Post by markt on Apr 16, 2009 21:20:18 GMT
I'm not aware of any southern observers, or southern observing programmes - I guess the population density is alot less 'darn sarf' than it is in the northern hemisphere. The NLC season is indeed getting closer, I was walking home at twilight on sunday night when it was clear here - the sky is starting to take on it's summer twilight appearance more and more now. As I walked I was contemplating how good this years season may be, fingers crossed for an impressive one  |
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Post by Bill W on Apr 17, 2009 8:47:37 GMT
Hi,
I mentioned this last year. You'll need to dig around in the postings to find it. I think it was "leolion" who nailed the reference.
I had read a report from a Russian group who had set up a remote camera in Punta Arenas.
Other observations seem very hard to come by.
There seem to be some differences between northern and southern nlc's probably due to the subtle differences in the atmospheric circulations which cause them. They're there though.
The legendary B.Fogle was observing down there in the late sixties.
If you go to my own wee website there are the details of his main work. (http://userweb.elec.gla.ac.uk/b/bward/nlc.htm)
AIM doesn't show exactly what we see because of the wavelengths it observes at. It's looking for PMC.
It's just down to the lack of eye's on the sky down there (and the relatively poor weather....)
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Post by ediacara on Apr 20, 2009 16:46:56 GMT
Yes, thank you!
The only hope to get some info from the deep south is the people living in some scientific bases in Antarctica, or at the Antarctic peninsula. They have a lot of halo displays, astronomic beauties there on their photos. But no NLC... I know the most populated bases like McMurdo are too close to the pole, but I will keep trying to find any info. I think it's an interesting quest. :-)
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Post by Bill W on Apr 21, 2009 8:36:24 GMT
Yes, the latitudinal distribution of bases gives them only limited observing opportunities.
I think there is a picture from one of the Australian bases on Tom's website. Even this is years old now.
The year before last I emailed both Argentinian and Chilean institutions about this subject and never got any reply.
Maybe you just need to turn up and knock on the door of the University in Punta Arenas!
We have a profound opportunity to study NLC through a prolonged solar minimum. It would be great to have some southern observers contribute.
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Post by tmcewan on Apr 21, 2009 16:24:07 GMT
...I think there is a picture from one of the Australian bases on Tom's website. Maybe you just need to turn up and knock on the door of the University in Punta Arenas! Yes, the full details on that can be found here: www.kersland.plus.com/nlcdavis.htmI think we should have a whip-round and send Bill to Punta Arenas next winter! Tom |
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Post by markt on May 5, 2009 6:20:08 GMT
I've now received a reply from the museum team on South Georgia, who are putting word about amongst the British Antarctic Survey staff, amongst others. Hopefully, someone will try to help. J. Good work there sir!  |
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