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	<title>Comments on: Spotless days: 400 and counting</title>
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	<link>http://wattsupwiththat.com/2008/08/13/spotless-days-400-and-counting/</link>
	<description>Commentary on puzzling things in life, nature, science, weather, climate change, technology, and recent news by Anthony Watts</description>
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		<title>By: yonsaon</title>
		<link>http://wattsupwiththat.com/2008/08/13/spotless-days-400-and-counting/#comment-66272</link>
		<dc:creator>yonsaon</dc:creator>
		<pubDate>Tue, 23 Dec 2008 19:29:24 +0000</pubDate>
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		<description>I just found out about a putative influence of Saturn and Jupiter on sunspots after seeing a reference to it the account of Velikovsky&#039;s last of his numerous meetings with Einstein.
http://www.varchive.org/bdb/meeting.htm
(Velikovsky&#039;s ideas for why the coupling exist aside, the relation does seem to exist, whatever the cause.)

Here are some links I&#039;ve found pertinent to the Jupiter/Saturn/Solar interaction.  I don&#039;t know which, if any, are reliable, but they look like they might provide at least some useful information.
http://lep694.gsfc.nasa.gov/gunther/gunther/MikulaSS2006Article.pdf
http://www.john-daly.com/topevnts.htm
http://www.jupitersdance.com/
http://adsabs.harvard.edu/abs/1979stiw.conf..193M
http://www.predictweather.co.nz/assets/articles/article_resources.php?id=89

But my question is, &lt;b&gt;IS ANYONE USING THIS INFORMATION TO PREDICT WHAT TO EXPECT FOR SS24?  IF SO, WHERE CAN I FIND IT?&lt;/b&gt;</description>
		<content:encoded><![CDATA[<p>I just found out about a putative influence of Saturn and Jupiter on sunspots after seeing a reference to it the account of Velikovsky&#8217;s last of his numerous meetings with Einstein.<br />
<a href="http://www.varchive.org/bdb/meeting.htm" rel="nofollow">http://www.varchive.org/bdb/meeting.htm</a><br />
(Velikovsky&#8217;s ideas for why the coupling exist aside, the relation does seem to exist, whatever the cause.)</p>
<p>Here are some links I&#8217;ve found pertinent to the Jupiter/Saturn/Solar interaction.  I don&#8217;t know which, if any, are reliable, but they look like they might provide at least some useful information.<br />
<a href="http://lep694.gsfc.nasa.gov/gunther/gunther/MikulaSS2006Article.pdf" rel="nofollow">http://lep694.gsfc.nasa.gov/gunther/gunther/MikulaSS2006Article.pdf</a><br />
<a href="http://www.john-daly.com/topevnts.htm" rel="nofollow">http://www.john-daly.com/topevnts.htm</a><br />
<a href="http://www.jupitersdance.com/" rel="nofollow">http://www.jupitersdance.com/</a><br />
<a href="http://adsabs.harvard.edu/abs/1979stiw.conf..193M" rel="nofollow">http://adsabs.harvard.edu/abs/1979stiw.conf..193M</a><br />
<a href="http://www.predictweather.co.nz/assets/articles/article_resources.php?id=89" rel="nofollow">http://www.predictweather.co.nz/assets/articles/article_resources.php?id=89</a></p>
<p>But my question is, <b>IS ANYONE USING THIS INFORMATION TO PREDICT WHAT TO EXPECT FOR SS24?  IF SO, WHERE CAN I FIND IT?</b></p>
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		<title>By: The inconvenient lies of the Intergovernmental Panel on Climate Change &#171; An Honest Climate Debate</title>
		<link>http://wattsupwiththat.com/2008/08/13/spotless-days-400-and-counting/#comment-40231</link>
		<dc:creator>The inconvenient lies of the Intergovernmental Panel on Climate Change &#171; An Honest Climate Debate</dc:creator>
		<pubDate>Thu, 18 Sep 2008 13:05:38 +0000</pubDate>
		<guid isPermaLink="false">http://wattsupwiththat.wordpress.com/?p=2230#comment-40231</guid>
		<description>[...] It didn’t take long for nature to show the IPCC was wrong. Excuses were equally quick to appear. For example, they said it was El Nino but that turned out to be a non-event. Of course, the IPCC couldn’t get the right answer for the cooling trend because it was not programmed in the computer. While they include solar activity they only consider one aspect - the electromagnetic spectrum. Meanwhile they studiously avoided any discussion of the clear relationship between sunspot activity and temperature. They claimed there was no mechanism to explain the correlation so it could not be included, but that is incorrect. A very valid mechanism known as the Cosmic Theory (Svensmark and Calder, “The Chilling Stars”) has been in the literature with increasing detail since 1991. The date is important because IPCC claimed it was excluded because it was not published in time to meet their cut off date for consideration.  Solar activity has declined since a peak at the end of the 20th century. There have been virtually no sunspots for over 400 days. [...]</description>
		<content:encoded><![CDATA[<p>[...] It didn’t take long for nature to show the IPCC was wrong. Excuses were equally quick to appear. For example, they said it was El Nino but that turned out to be a non-event. Of course, the IPCC couldn’t get the right answer for the cooling trend because it was not programmed in the computer. While they include solar activity they only consider one aspect &#8211; the electromagnetic spectrum. Meanwhile they studiously avoided any discussion of the clear relationship between sunspot activity and temperature. They claimed there was no mechanism to explain the correlation so it could not be included, but that is incorrect. A very valid mechanism known as the Cosmic Theory (Svensmark and Calder, “The Chilling Stars”) has been in the literature with increasing detail since 1991. The date is important because IPCC claimed it was excluded because it was not published in time to meet their cut off date for consideration.  Solar activity has declined since a peak at the end of the 20th century. There have been virtually no sunspots for over 400 days. [...]</p>
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		<title>By: News Flash: CO2 emissions causing record drop in sunspot activity!!! &#171; Lemur King&#8217;s Folly</title>
		<link>http://wattsupwiththat.com/2008/08/13/spotless-days-400-and-counting/#comment-36066</link>
		<dc:creator>News Flash: CO2 emissions causing record drop in sunspot activity!!! &#171; Lemur King&#8217;s Folly</dc:creator>
		<pubDate>Wed, 03 Sep 2008 03:04:07 +0000</pubDate>
		<guid isPermaLink="false">http://wattsupwiththat.wordpress.com/?p=2230#comment-36066</guid>
		<description>[...] the truth is that we are NOT at a 100 year high (days w/o sunspots).  Not even close.  At wattsupwiththat: Adding up every daily blank sun for the past three years, we find that the current solar minimum [...]</description>
		<content:encoded><![CDATA[<p>[...] the truth is that we are NOT at a 100 year high (days w/o sunspots).  Not even close.  At wattsupwiththat: Adding up every daily blank sun for the past three years, we find that the current solar minimum [...]</p>
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		<title>By: Robert Bateman</title>
		<link>http://wattsupwiththat.com/2008/08/13/spotless-days-400-and-counting/#comment-33435</link>
		<dc:creator>Robert Bateman</dc:creator>
		<pubDate>Sat, 23 Aug 2008 22:23:32 +0000</pubDate>
		<guid isPermaLink="false">http://wattsupwiththat.wordpress.com/?p=2230#comment-33435</guid>
		<description>Looking at the sunspot cycle length for the triggers the lead to the Maunder and the Dalton Minimums,  a preceeding minima to minima plus maxima to maxima of an average of 14 yrs  or longer suffices to &#039;pull the trigger&#039;.

So, we would need SC24 to start at 2010.5 and maxima at 2014.3 to have a new Minimum of record firing mechanism, or any combination of SC24 start and SC24 maxima that leads to an average of 14 yrs from the SC23 start and SC23 maxima. i.e. - sc24 start of 2010 and sc24 maxima of 2015 would do.</description>
		<content:encoded><![CDATA[<p>Looking at the sunspot cycle length for the triggers the lead to the Maunder and the Dalton Minimums,  a preceeding minima to minima plus maxima to maxima of an average of 14 yrs  or longer suffices to &#8216;pull the trigger&#8217;.</p>
<p>So, we would need SC24 to start at 2010.5 and maxima at 2014.3 to have a new Minimum of record firing mechanism, or any combination of SC24 start and SC24 maxima that leads to an average of 14 yrs from the SC23 start and SC23 maxima. i.e. &#8211; sc24 start of 2010 and sc24 maxima of 2015 would do.</p>
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		<title>By: Robert Bateman</title>
		<link>http://wattsupwiththat.com/2008/08/13/spotless-days-400-and-counting/#comment-33352</link>
		<dc:creator>Robert Bateman</dc:creator>
		<pubDate>Sat, 23 Aug 2008 10:45:42 +0000</pubDate>
		<guid isPermaLink="false">http://wattsupwiththat.wordpress.com/?p=2230#comment-33352</guid>
		<description>I see a harmonic relationship between the 188 yr cycle and the oft out-of-sync 243 yr cycle that plays a big role in ending the minimum of note (like the oort, wolf, maunder, etc.).
astro-ph, 2006 June 27
LONG-TERM VARIABILITY IN THE LENGTH OF THE SOLAR CYCLE

The Minimum are triggered by very long SC&#039;s as measured from minima to minima.  They are ended in the relationship of where the Minimum started on the curves of the 243 yr cycle and whether the 188 yr cycle was rising or falling when the Minimum began.  Another 1000 yrs of data would be helpful, but the relationships are harmonious and neat.</description>
		<content:encoded><![CDATA[<p>I see a harmonic relationship between the 188 yr cycle and the oft out-of-sync 243 yr cycle that plays a big role in ending the minimum of note (like the oort, wolf, maunder, etc.).<br />
astro-ph, 2006 June 27<br />
LONG-TERM VARIABILITY IN THE LENGTH OF THE SOLAR CYCLE</p>
<p>The Minimum are triggered by very long SC&#8217;s as measured from minima to minima.  They are ended in the relationship of where the Minimum started on the curves of the 243 yr cycle and whether the 188 yr cycle was rising or falling when the Minimum began.  Another 1000 yrs of data would be helpful, but the relationships are harmonious and neat.</p>
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		<title>By: Gary Gulrud</title>
		<link>http://wattsupwiththat.com/2008/08/13/spotless-days-400-and-counting/#comment-33155</link>
		<dc:creator>Gary Gulrud</dc:creator>
		<pubDate>Fri, 22 Aug 2008 12:03:03 +0000</pubDate>
		<guid isPermaLink="false">http://wattsupwiththat.wordpress.com/?p=2230#comment-33155</guid>
		<description>Courtesy of Kuhnkat at Jennifer&#039;s:

http://lasp.colorado.edu/sorce/tsi_data/daily/SORCE_L3_TSI_DM_V0008_20030225_20080812.txt

Note TSI at earth distance.  Including the albedo, UV associated with solar flaring, and solarwind/geomagnetic fluctuations the energy absorbed by the earth varies &gt;10%.</description>
		<content:encoded><![CDATA[<p>Courtesy of Kuhnkat at Jennifer&#8217;s:</p>
<p><a href="http://lasp.colorado.edu/sorce/tsi_data/daily/SORCE_L3_TSI_DM_V0008_20030225_20080812.txt" rel="nofollow">http://lasp.colorado.edu/sorce/tsi_data/daily/SORCE_L3_TSI_DM_V0008_20030225_20080812.txt</a></p>
<p>Note TSI at earth distance.  Including the albedo, UV associated with solar flaring, and solarwind/geomagnetic fluctuations the energy absorbed by the earth varies &gt;10%.</p>
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		<title>By: Scientist Predicts Ice Age Within 10 Years &#171; noworldsystem.com</title>
		<link>http://wattsupwiththat.com/2008/08/13/spotless-days-400-and-counting/#comment-33143</link>
		<dc:creator>Scientist Predicts Ice Age Within 10 Years &#171; noworldsystem.com</dc:creator>
		<pubDate>Fri, 22 Aug 2008 07:12:28 +0000</pubDate>
		<guid isPermaLink="false">http://wattsupwiththat.wordpress.com/?p=2230#comment-33143</guid>
		<description>[...] only been a handful of days in the past two months where any sunspot activity has been observed and over 400 spotless days have been recorded in the current solar [...]</description>
		<content:encoded><![CDATA[<p>[...] only been a handful of days in the past two months where any sunspot activity has been observed and over 400 spotless days have been recorded in the current solar [...]</p>
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		<title>By: Robert Bateman</title>
		<link>http://wattsupwiththat.com/2008/08/13/spotless-days-400-and-counting/#comment-33136</link>
		<dc:creator>Robert Bateman</dc:creator>
		<pubDate>Fri, 22 Aug 2008 06:06:17 +0000</pubDate>
		<guid isPermaLink="false">http://wattsupwiththat.wordpress.com/?p=2230#comment-33136</guid>
		<description>The global cooling isn&#039;t on the nightly news, and the public is blissfully unaware of it.
They don&#039;t even know what Solar Minima means, much less deep Solar Minima.
The Media pounds green to fight Global Warming, and the average Joe thinks it&#039;s the latest cup of tea.</description>
		<content:encoded><![CDATA[<p>The global cooling isn&#8217;t on the nightly news, and the public is blissfully unaware of it.<br />
They don&#8217;t even know what Solar Minima means, much less deep Solar Minima.<br />
The Media pounds green to fight Global Warming, and the average Joe thinks it&#8217;s the latest cup of tea.</p>
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		<title>By: Global Warming Cooling Off</title>
		<link>http://wattsupwiththat.com/2008/08/13/spotless-days-400-and-counting/#comment-32972</link>
		<dc:creator>Global Warming Cooling Off</dc:creator>
		<pubDate>Thu, 21 Aug 2008 17:32:55 +0000</pubDate>
		<guid isPermaLink="false">http://wattsupwiththat.wordpress.com/?p=2230#comment-32972</guid>
		<description>[...] only been a handful of days in the past two months where any sunspot activity has been observed and over 400 spotless days have been recorded in the current solar [...]</description>
		<content:encoded><![CDATA[<p>[...] only been a handful of days in the past two months where any sunspot activity has been observed and over 400 spotless days have been recorded in the current solar [...]</p>
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		<title>By: 2008 Coolest For At Least Five Years - XDTalk Forums - Your HS2000/SA-XD Information Source!</title>
		<link>http://wattsupwiththat.com/2008/08/13/spotless-days-400-and-counting/#comment-32950</link>
		<dc:creator>2008 Coolest For At Least Five Years - XDTalk Forums - Your HS2000/SA-XD Information Source!</dc:creator>
		<pubDate>Thu, 21 Aug 2008 16:22:34 +0000</pubDate>
		<guid isPermaLink="false">http://wattsupwiththat.wordpress.com/?p=2230#comment-32950</guid>
		<description>[...] only been a handful of days in the past two months where any sunspot activity has been observed and over 400 spotless days have been recorded in the current solar cycle.  As we reported last week, the Armagh observatory, which has been [...]</description>
		<content:encoded><![CDATA[<p>[...] only been a handful of days in the past two months where any sunspot activity has been observed and over 400 spotless days have been recorded in the current solar cycle.  As we reported last week, the Armagh observatory, which has been [...]</p>
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		<title>By: Alex Jones' Infowars: There's a war on for your mind!</title>
		<link>http://wattsupwiththat.com/2008/08/13/spotless-days-400-and-counting/#comment-32939</link>
		<dc:creator>Alex Jones' Infowars: There's a war on for your mind!</dc:creator>
		<pubDate>Thu, 21 Aug 2008 15:20:10 +0000</pubDate>
		<guid isPermaLink="false">http://wattsupwiththat.wordpress.com/?p=2230#comment-32939</guid>
		<description>[...] only been a handful of days in the past two months where any sunspot activity has been observed and over 400 spotless days have been recorded in the current solar [...]</description>
		<content:encoded><![CDATA[<p>[...] only been a handful of days in the past two months where any sunspot activity has been observed and over 400 spotless days have been recorded in the current solar [...]</p>
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		<title>By: Alex Jones&#8217; Prison Planet.com 2008 Coolest For At Least Five Years</title>
		<link>http://wattsupwiththat.com/2008/08/13/spotless-days-400-and-counting/#comment-32901</link>
		<dc:creator>Alex Jones&#8217; Prison Planet.com 2008 Coolest For At Least Five Years</dc:creator>
		<pubDate>Thu, 21 Aug 2008 10:16:28 +0000</pubDate>
		<guid isPermaLink="false">http://wattsupwiththat.wordpress.com/?p=2230#comment-32901</guid>
		<description>[...] only been a handful of days in the past two months where any sunspot activity has been observed and over 400 spotless days have been recorded in the current solar [...]</description>
		<content:encoded><![CDATA[<p>[...] only been a handful of days in the past two months where any sunspot activity has been observed and over 400 spotless days have been recorded in the current solar [...]</p>
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		<title>By: leebert</title>
		<link>http://wattsupwiththat.com/2008/08/13/spotless-days-400-and-counting/#comment-32877</link>
		<dc:creator>leebert</dc:creator>
		<pubDate>Thu, 21 Aug 2008 04:28:32 +0000</pubDate>
		<guid isPermaLink="false">http://wattsupwiththat.wordpress.com/?p=2230#comment-32877</guid>
		<description>Leif,

Thanks! 

And just to add to the fun.... have you seen this? 

NEW CLIMATE RECORD SHOWS SOLAR-DRIVEN MEGA-DROUGHTS
http://news.research.ohiou.edu/news/index.php?item=503

There&#039;s such a tempting - and seemingly more than anecdotal or coincidental history of solar influences on Earth&#039;s climate - that I feel we should carefully frame the way long-term TSI is relegated as a lesser climate factor. 

If TSI is less variable than previously believed, then the ramifications are manifold &amp; seem to me as posing some fascinating quandaries. The mystery compounds, and if cosmic rays aren&#039;t the answer (not to say they aren&#039;t, b/c we agree the jury&#039;s still out on GCR flux) then Earth&#039;s climate is far more responsive to solar influnces than previously known, and by association, could also be more sensitive to other forcings. 

However, this may not be the case, because TSI and greenhouse gases aren&#039;t fungible. As I&#039;ve pointed out before, TSI has slackened by the equivalent of -0.1 degrees Celsius since circa 1992 with a functional -0.065 degrees C/decade effect, while Earth&#039;s albedo has been boosted by aerosols with a nearly -0.07 degrees C/decade effect (Ramanathan, Carmichael, 2008). The net effect is -0.135 degrC/decade effect, with a concurrently stable global temperature trend of slight cooling in the seas &amp; air.

But the point in all this is that TSI&#039;s direct effects are more or less linear, but CO2&#039;s effect is not -- it&#039;s logarithmic. If GCR flux doesn&#039;t prevail as a major player, a lesser role for TSI puts a new wrinkle in CO2&#039;s logarithmic effect -- perhaps more intense at lower concentrations, greater saturation at higher concentrations. 

The upshot of this is that the sun &amp; aerosols have offset (or masked) the effects of greenhouse gases by the same amount. If these two trends don&#039;t abate &amp; temperatures remain stable, I feel we might have a pretty solid indicator of total GHG effects at +0.135 degrC/decade - not a scary AGW result at all, in my mind. Unprecedented? Maybe.... Less than ideal? Perhaps. Dangerous? I don&#039;t see it.</description>
		<content:encoded><![CDATA[<p>Leif,</p>
<p>Thanks! </p>
<p>And just to add to the fun&#8230;. have you seen this? </p>
<p>NEW CLIMATE RECORD SHOWS SOLAR-DRIVEN MEGA-DROUGHTS<br />
<a href="http://news.research.ohiou.edu/news/index.php?item=503" rel="nofollow">http://news.research.ohiou.edu/news/index.php?item=503</a></p>
<p>There&#8217;s such a tempting &#8211; and seemingly more than anecdotal or coincidental history of solar influences on Earth&#8217;s climate &#8211; that I feel we should carefully frame the way long-term TSI is relegated as a lesser climate factor. </p>
<p>If TSI is less variable than previously believed, then the ramifications are manifold &amp; seem to me as posing some fascinating quandaries. The mystery compounds, and if cosmic rays aren&#8217;t the answer (not to say they aren&#8217;t, b/c we agree the jury&#8217;s still out on GCR flux) then Earth&#8217;s climate is far more responsive to solar influnces than previously known, and by association, could also be more sensitive to other forcings. </p>
<p>However, this may not be the case, because TSI and greenhouse gases aren&#8217;t fungible. As I&#8217;ve pointed out before, TSI has slackened by the equivalent of -0.1 degrees Celsius since circa 1992 with a functional -0.065 degrees C/decade effect, while Earth&#8217;s albedo has been boosted by aerosols with a nearly -0.07 degrees C/decade effect (Ramanathan, Carmichael, 2008). The net effect is -0.135 degrC/decade effect, with a concurrently stable global temperature trend of slight cooling in the seas &amp; air.</p>
<p>But the point in all this is that TSI&#8217;s direct effects are more or less linear, but CO2&#8217;s effect is not &#8212; it&#8217;s logarithmic. If GCR flux doesn&#8217;t prevail as a major player, a lesser role for TSI puts a new wrinkle in CO2&#8217;s logarithmic effect &#8212; perhaps more intense at lower concentrations, greater saturation at higher concentrations. </p>
<p>The upshot of this is that the sun &amp; aerosols have offset (or masked) the effects of greenhouse gases by the same amount. If these two trends don&#8217;t abate &amp; temperatures remain stable, I feel we might have a pretty solid indicator of total GHG effects at +0.135 degrC/decade &#8211; not a scary AGW result at all, in my mind. Unprecedented? Maybe&#8230;. Less than ideal? Perhaps. Dangerous? I don&#8217;t see it.</p>
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		<title>By: Robert Bateman</title>
		<link>http://wattsupwiththat.com/2008/08/13/spotless-days-400-and-counting/#comment-32665</link>
		<dc:creator>Robert Bateman</dc:creator>
		<pubDate>Wed, 20 Aug 2008 11:23:40 +0000</pubDate>
		<guid isPermaLink="false">http://wattsupwiththat.wordpress.com/?p=2230#comment-32665</guid>
		<description>And the last sunspot was an SC23. Area 1000 I believe they called it.
12 years long it is.  Not the granddaddy, but a long one indeed.
What if SC24 has already begun, but it has so little impetus that it won&#039;t be recognizable until 2-3 years down the road?
Chilling.</description>
		<content:encoded><![CDATA[<p>And the last sunspot was an SC23. Area 1000 I believe they called it.<br />
12 years long it is.  Not the granddaddy, but a long one indeed.<br />
What if SC24 has already begun, but it has so little impetus that it won&#8217;t be recognizable until 2-3 years down the road?<br />
Chilling.</p>
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		<title>By: Alex Jones&#8217; Prison Planet.com Scientist Predicts Ice Age Within 10 Years</title>
		<link>http://wattsupwiththat.com/2008/08/13/spotless-days-400-and-counting/#comment-32517</link>
		<dc:creator>Alex Jones&#8217; Prison Planet.com Scientist Predicts Ice Age Within 10 Years</dc:creator>
		<pubDate>Tue, 19 Aug 2008 17:58:37 +0000</pubDate>
		<guid isPermaLink="false">http://wattsupwiththat.wordpress.com/?p=2230#comment-32517</guid>
		<description>[...] only been a handful of days in the past two months where any sunspot activity has been observed and over 400 spotless days have been recorded in the current solar [...]</description>
		<content:encoded><![CDATA[<p>[...] only been a handful of days in the past two months where any sunspot activity has been observed and over 400 spotless days have been recorded in the current solar [...]</p>
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		<title>By: Raphael</title>
		<link>http://wattsupwiththat.com/2008/08/13/spotless-days-400-and-counting/#comment-32314</link>
		<dc:creator>Raphael</dc:creator>
		<pubDate>Mon, 18 Aug 2008 16:35:35 +0000</pubDate>
		<guid isPermaLink="false">http://wattsupwiththat.wordpress.com/?p=2230#comment-32314</guid>
		<description>Leif,

Thanks for trying to help me understand. I realize now there should have never been a misunderstanding on my part. I had a temporary case of stupid.  I was a bit too distracted by what you were saying and failed to apply the terms to my existing imagery and follow it though.</description>
		<content:encoded><![CDATA[<p>Leif,</p>
<p>Thanks for trying to help me understand. I realize now there should have never been a misunderstanding on my part. I had a temporary case of stupid.  I was a bit too distracted by what you were saying and failed to apply the terms to my existing imagery and follow it though.</p>
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		<title>By: Leif Svalgaard</title>
		<link>http://wattsupwiththat.com/2008/08/13/spotless-days-400-and-counting/#comment-32189</link>
		<dc:creator>Leif Svalgaard</dc:creator>
		<pubDate>Sun, 17 Aug 2008 21:23:32 +0000</pubDate>
		<guid isPermaLink="false">http://wattsupwiththat.wordpress.com/?p=2230#comment-32189</guid>
		<description>Raphael (13:45:05) :
&lt;i&gt;my specific question is: Does MHD have a “problem” with a frozen in state and a low density plasma?&lt;/i&gt;
Perhaps I should try to treat the problem the same way as it was originally approached by Chapman and Ferrarro in ~1930. As the solar wind nears the Earth, it will see a varying dipole field where dB/dt gets larger and larger as the wind nears the Earth. This induces an electric current that produces a magnetic field &#039;mirroring&#039; the Earth&#039;s dipole, thereby confining the Earth&#039;s magnetic field to a small &#039;cavity&#039; that we today call the &#039;magnetosphere&#039; [coined by Thomas Gold]. Here is a brief explanation of this process:
http://arc.iki.rssi.ru/mirrors/stern/Education/bh1-3.html</description>
		<content:encoded><![CDATA[<p>Raphael (13:45:05) :<br />
<i>my specific question is: Does MHD have a “problem” with a frozen in state and a low density plasma?</i><br />
Perhaps I should try to treat the problem the same way as it was originally approached by Chapman and Ferrarro in ~1930. As the solar wind nears the Earth, it will see a varying dipole field where dB/dt gets larger and larger as the wind nears the Earth. This induces an electric current that produces a magnetic field &#8216;mirroring&#8217; the Earth&#8217;s dipole, thereby confining the Earth&#8217;s magnetic field to a small &#8216;cavity&#8217; that we today call the &#8216;magnetosphere&#8217; [coined by Thomas Gold]. Here is a brief explanation of this process:<br />
<a href="http://arc.iki.rssi.ru/mirrors/stern/Education/bh1-3.html" rel="nofollow">http://arc.iki.rssi.ru/mirrors/stern/Education/bh1-3.html</a></p>
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		<title>By: Leif Svalgaard</title>
		<link>http://wattsupwiththat.com/2008/08/13/spotless-days-400-and-counting/#comment-32186</link>
		<dc:creator>Leif Svalgaard</dc:creator>
		<pubDate>Sun, 17 Aug 2008 21:06:10 +0000</pubDate>
		<guid isPermaLink="false">http://wattsupwiththat.wordpress.com/?p=2230#comment-32186</guid>
		<description>Raphael (13:45:05) :
&lt;i&gt;my specific question is: Does MHD have a “problem” with a frozen in state and a low density plasma?&lt;/i&gt;
No, it does not. In fact the Sun&#039;s magnetic field is frozen into the solar wind and is transported to where the solar wind goes, i.e. away from the Sun. Recall, that the original problem was to what extent the Earth&#039;s magnetic field could act upon the Sun, and the answer is that it cannot, because the solar wind moves away from the Sun much faster than an Alfven wave can move towards to Sun. If you turned off the solar wind, then the Earth&#039;s dipolar magnetic field would engulf the Sun [but be very, very, ..., very weak]. Now, turn on the solar wind. When the solar wind plasma meets the Earth&#039;s magnetic field [extending to the Sun] the field freezes into the plasma and moves with it away from the Sun. I have, by now, forgotten what your problem with all this was.</description>
		<content:encoded><![CDATA[<p>Raphael (13:45:05) :<br />
<i>my specific question is: Does MHD have a “problem” with a frozen in state and a low density plasma?</i><br />
No, it does not. In fact the Sun&#8217;s magnetic field is frozen into the solar wind and is transported to where the solar wind goes, i.e. away from the Sun. Recall, that the original problem was to what extent the Earth&#8217;s magnetic field could act upon the Sun, and the answer is that it cannot, because the solar wind moves away from the Sun much faster than an Alfven wave can move towards to Sun. If you turned off the solar wind, then the Earth&#8217;s dipolar magnetic field would engulf the Sun [but be very, very, ..., very weak]. Now, turn on the solar wind. When the solar wind plasma meets the Earth&#8217;s magnetic field [extending to the Sun] the field freezes into the plasma and moves with it away from the Sun. I have, by now, forgotten what your problem with all this was.</p>
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		<title>By: Raphael</title>
		<link>http://wattsupwiththat.com/2008/08/13/spotless-days-400-and-counting/#comment-32177</link>
		<dc:creator>Raphael</dc:creator>
		<pubDate>Sun, 17 Aug 2008 20:45:05 +0000</pubDate>
		<guid isPermaLink="false">http://wattsupwiththat.wordpress.com/?p=2230#comment-32177</guid>
		<description>Leif,

My atrophied math skills are definately going to get in the way of my understanding easily. 

&lt;i&gt;At the magnetosphere boundary there is a balance between the kinetic energy [&quot;the dynamic pressure&quot;] of the solar wind and the magnetic energy [&quot;the magnetic pressure&quot;] in the geomagnetic field.&lt;/i&gt;

While I admire models which allow understanding, I do not see this prohibitting the propagation of the earth&#039;s magnetic field. 

If we look at the problem from the rest frame of the solar wind,  this pressure problem disappears, leaving only the propagation of the wave form of a virtual photon through a medium. This leads back to the density of the medium to prevent propagation. 

I really don&#039;t want to read an internet&#039;s worth of MHD, so my specific question is: Does MHD have a &quot;problem&quot; with a frozen in state and a low density plasma?</description>
		<content:encoded><![CDATA[<p>Leif,</p>
<p>My atrophied math skills are definately going to get in the way of my understanding easily. </p>
<p><i>At the magnetosphere boundary there is a balance between the kinetic energy ["the dynamic pressure"] of the solar wind and the magnetic energy ["the magnetic pressure"] in the geomagnetic field.</i></p>
<p>While I admire models which allow understanding, I do not see this prohibitting the propagation of the earth&#8217;s magnetic field. </p>
<p>If we look at the problem from the rest frame of the solar wind,  this pressure problem disappears, leaving only the propagation of the wave form of a virtual photon through a medium. This leads back to the density of the medium to prevent propagation. </p>
<p>I really don&#8217;t want to read an internet&#8217;s worth of MHD, so my specific question is: Does MHD have a &#8220;problem&#8221; with a frozen in state and a low density plasma?</p>
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		<title>By: Robert Bateman</title>
		<link>http://wattsupwiththat.com/2008/08/13/spotless-days-400-and-counting/#comment-32144</link>
		<dc:creator>Robert Bateman</dc:creator>
		<pubDate>Sun, 17 Aug 2008 18:10:46 +0000</pubDate>
		<guid isPermaLink="false">http://wattsupwiththat.wordpress.com/?p=2230#comment-32144</guid>
		<description>John Finn (07:17:15) : 

Robert Bateman (01:52:53) 

“The length of the current cycle appears to be approaching 12 years.
http://www.tmgnow.com/repository/solar/lassen1.html
If true, this makes it the longest on record since ca. 1800.
So, it looks like this is cooler stuff, and if it goes on another year, we are looking at really cold stuff.”

Possibly - but cycle 20 was 11 years and 7 months and this was followed by the late 20th century warming, so it’s perhaps a bit premature to declare certain cooling.

If it goes on another year, it will be 13 yrs.  That was my  point, this cycle is already longer than 20, and we seem to be dealing with thresholds when it comes to solar cycles.  There is little point in trying to predict now, all the models have problems.  Perhpaps that is because they are built around shorter cycles trends, I don&#039;t know.  
What&#039;s left is to relate, and as long as this sc23 continues, the # of cycles and patterns that follow get increasingly restricted.
Reaching past 12 yrs and on into 13 years puts us backat least to 1800 and the Dalton.
It hasn&#039;t happened yet, but it also hasn&#039;t stopped lengthening.
Where do YOU put the start of SC23?  Oct, 1996?  Some say May, 1996 with smoothed monthly at 8.5.
For the former, SC23 is at 11yrs 10 mos., for the latter, SC23 is at 12 yrs 3 mos.</description>
		<content:encoded><![CDATA[<p>John Finn (07:17:15) : </p>
<p>Robert Bateman (01:52:53) </p>
<p>“The length of the current cycle appears to be approaching 12 years.<br />
<a href="http://www.tmgnow.com/repository/solar/lassen1.html" rel="nofollow">http://www.tmgnow.com/repository/solar/lassen1.html</a><br />
If true, this makes it the longest on record since ca. 1800.<br />
So, it looks like this is cooler stuff, and if it goes on another year, we are looking at really cold stuff.”</p>
<p>Possibly &#8211; but cycle 20 was 11 years and 7 months and this was followed by the late 20th century warming, so it’s perhaps a bit premature to declare certain cooling.</p>
<p>If it goes on another year, it will be 13 yrs.  That was my  point, this cycle is already longer than 20, and we seem to be dealing with thresholds when it comes to solar cycles.  There is little point in trying to predict now, all the models have problems.  Perhpaps that is because they are built around shorter cycles trends, I don&#8217;t know.<br />
What&#8217;s left is to relate, and as long as this sc23 continues, the # of cycles and patterns that follow get increasingly restricted.<br />
Reaching past 12 yrs and on into 13 years puts us backat least to 1800 and the Dalton.<br />
It hasn&#8217;t happened yet, but it also hasn&#8217;t stopped lengthening.<br />
Where do YOU put the start of SC23?  Oct, 1996?  Some say May, 1996 with smoothed monthly at 8.5.<br />
For the former, SC23 is at 11yrs 10 mos., for the latter, SC23 is at 12 yrs 3 mos.</p>
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