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Post by lsvalgaard on Oct 10, 2010 2:56:44 GMT
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N9AAT
Level 3 Rank
DON'T PANIC
Posts: 153
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Post by N9AAT on Oct 10, 2010 16:22:24 GMT
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Post by af4ex on Oct 13, 2010 1:40:54 GMT
FYI, [H/T to Leif ] Here's the NOAA/SWPC bulletin for the CME which caused the K-5 geomagnetic storm yesterday: and a movie showing showing the actual CME launch: www.swpc.noaa.gov/oct6_dsf_sdo.wmv
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Post by france on Oct 14, 2010 10:46:51 GMT
Speaking of schemes breaking down have you noticed this ? Last week was the first time I can remember this cycle that we had two spot groups on the visible face of the sun with sizable penumbra. What I found interesting was the 304A reading during that time period was NOT near record high readings. As a matter of fact it was actually declining ! Checkout umtof.umd.edu/sem/ from Sept 23 to Sept 27. Fourth chart from the top. The red trace. During that time 1109 was growing very fast adding both number and size of spots. Yet there was no corresponding increase in 304A measurement. Is there an explanation for this ? Is anyone studying it ? My suggestion : 304A measurement was probably "compressed" by the wind of the coronal hole. But it'll possible the orientation of the spacecraft favoured this "atypical" measure. spaceweather.com/archive.php?view=1&day=28&month=09&year=2010 on this board Carla gave more links explainging what I wanted to say. "Compressed" for "restrained" solarcycle24com.proboards.com/index.cgi?board=general&action=display&thread=846&page=14
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Post by ouxly40 on Oct 14, 2010 15:35:15 GMT
Southeast wing. Another one looks to be forming to the west of the one that is now fading.
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Post by af4ex on Oct 14, 2010 16:51:43 GMT
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Post by france on Oct 14, 2010 20:51:37 GMT
I don't mean "space" but particles (you didn't read last post I wrote an the Carla thread)
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Post by af4ex on Oct 14, 2010 22:14:11 GMT
France, Yes, I read Carla's post. But we were discussing the cause of the low 304A levels in deep space (where the solar satellites are). The average density of the solar wind there is less than 10 particles per cc.
So the probability of any noticeable solar wind interactions with solar photons out there is virtually nil. N'est-ce pas? :-]
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Post by randwick on Oct 15, 2010 6:27:39 GMT
. @ Isvalgaard , I've followed your link with great interest
It seems on the face of it to suggest some factor influenced the sunspot metric
As a curios , where and whom took the first batches of readings
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Post by lsvalgaard on Oct 15, 2010 10:10:23 GMT
. @ Isvalgaard , I've followed your link with great interest It seems on the face of it to suggest some factor influenced the sunspot metric As a curios , where and whom took the first batches of readings Sunspots have been seen for thousands of years. Magnetic fields on the Sun were first observed by George Hale in 1908 at Mount Wilson, California. F10.7 micro wave flux was first observed in 1947 by Covington in Canada. Magnetic fields in the deepest, darkest part of spots were first observed by Bill Livingston in 1990s from Tucson, Arizona.
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Post by Bob k6tr on Oct 16, 2010 2:39:08 GMT
The 4 groups now all have spots. The count for Oct 16 will be 51. The 304A number is also on the move.
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Post by Bob k6tr on Oct 16, 2010 7:11:26 GMT
SDO's EVE has been showing the 304A reading shooting up like a rocket for the last 4 hours
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Post by france on Oct 16, 2010 15:13:03 GMT
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Post by france on Oct 16, 2010 16:34:33 GMT
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Post by af4ex on Oct 16, 2010 17:17:10 GMT
> I forgot this interesting link > arxiv.org/abs/0903.4141France, Thanks for the links. I had not previously heard about these charged 'nanoparticles' out there in deep space.
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