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Post by elbuho on Feb 18, 2010 23:11:30 GMT
What's about Livingstone data?    What's the problem? |
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Post by Bob k6tr on Feb 18, 2010 23:20:49 GMT
What's the problem? He probably got results in January that showed increasing magnetism but isn't going to release it until he received verification with a second positive reading. So we will have to wait a month. Relax |
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tsh
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Post by tsh on Feb 18, 2010 23:39:04 GMT
it would have to increased by a significant amount to indicate a reversal of the trend - I can't imagine anything particularly significant emerging in less than 6 months or so from looking at the spread of measurements to date...
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Post by annav on Feb 19, 2010 5:24:36 GMT
What's the problem? He probably got results in January that showed increasing magnetism but isn't going to release it until he received verification with a second positive reading. So we will have to wait a month. Relax If we look at the plot  we see that there can be large deviations from the trend. I wish they would give them time to measure every spot that goes through  |
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bongo
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Post by bongo on Feb 27, 2010 18:05:10 GMT
I am fairly ignorant when it comes to the machinations of our sun, but this theme has caught my eye.
I am not sure why the story has gone quiet recently, any news?
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Post by lsvalgaard on Feb 27, 2010 19:43:54 GMT
I am fairly ignorant when it comes to the machinations of our sun, but this theme has caught my eye. I am not sure why the story has gone quiet recently, any news? Bill Livingston only has limited telescope time and it is winter in Arizona so observing has not been so good as hoped for. There will be plenty of clear weather and spots in the months to come, so the story will continue. |
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bongo
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Post by bongo on Feb 27, 2010 22:29:34 GMT
thanks
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Post by lsvalgaard on Mar 2, 2010 22:38:01 GMT
He probably got results in January that showed increasing magnetism but isn't going to release it until he received verification with a second positive reading. So we will have to wait a month. Relax If we look at the plot we see that there can be large deviations from the trend. I wish they would give them time to measure every spot that goes through Has been updated |
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Post by Bob k6tr on Mar 2, 2010 23:49:15 GMT
If we look at the plot we see that there can be large deviations from the trend. I wish they would give them time to measure every spot that goes through Has been updated Leif Are each of the black tick marks the measurement for each indivivdual sunspot and the blue dot is the mean for all of the spots observed during the session ? |
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Post by lsvalgaard on Mar 3, 2010 1:53:12 GMT
Leif Are each of the black tick marks the measurement for each indivivdual sunspot and the blue dot is the mean for all of the spots observed during the session ? Yes, blue/pink dots averages for the year [for 2010: so far] |
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Post by annav on Mar 4, 2010 15:10:24 GMT
Leif Are each of the black tick marks the measurement for each indivivdual sunspot and the blue dot is the mean for all of the spots observed during the session ? Yes, blue/pink dots averages for the year [for 2010: so far] Is there a correlation of the LP effect with the areas observed? Though we are getting spots on the visible, they are mostly small to tiny. anna |
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Post by lsvalgaard on Mar 4, 2010 15:31:37 GMT
Yes, blue/pink dots averages for the year [for 2010: so far] Is there a correlation of the LP effect with the areas observed? Though we are getting spots on the visible, they are mostly small to tiny. anna That they are small is probably part of the L&P effect to begin with. |
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Post by sranderson on Mar 4, 2010 17:32:50 GMT
Leif, when you say that the L&P chart is updated, you mean that it includes the latest measurements which were made in early January, correct?
Do you happen to know if any measurements have been performed since mid-late January? If so, were they consistent with the previous data trend?
If the umbral contrast and magnetic field measurements are still low or declining in the face of significant increases in solar activity over the last three months, then that would be excellent confirmation that the secular trend measured since 1990 is continuing, independent of Schwabe cycle state.
If true, it is probably almost time for a new paper submission. I suspect that they should get data through June 2010 to be sure though.
Scott
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Post by Bob k6tr on Mar 4, 2010 17:49:40 GMT
If the umbral contrast and magnetic field measurements are still low or declining in the face of significant increases in solar activity over the last three months, Correct me if I'm wrong but doesn't Bill Livingston's data show that Umbral Contrast is going up while Magnetic Field Strength is going down ? |
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Post by sranderson on Mar 4, 2010 18:27:37 GMT
That depends on whether or not you see less contrast as "going up" or not. A contrast of 1 means that there is no contrast, so sunspots would be invisible. To most folks, such a situation would imply a lack of contrast, or actually no contrast at all.
So as the contrast goes up toward 1, it is decreasing. If sunspots are becoming "more contrasty" then they would not be going away...
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What's the problem? 
