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  #331 (permalink)  
Old 05-November-2009, 07:31 AM
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Let me put it another way which perhaps you can understand. Our universe is a very violent and dangerous place for such fragile corporeal beings such as we. And our understanding of the universe in which we live is that of a helpless infant.

Now Einstein, who despite his human flaws, was a very wise man. He said, and I quote; "You have two choices. You can either decide that you're living in a hostile universe or you can decide that you are living in a friendly universe. The choice is yours!" He also said about our universe and the human condition: "Of course it's hopeless! But it you take that position, then you already have one foot in the grave!"

Now, what I see as the underlying issue to this bitter discussion is the question are you afraid or not? It's as simply as that. We don't know what our sun...our star is going to do.....NONE OF US!!! So our fate is uncertain. So again I reiterate the question.....are you afraid or not? Because in the final analysis that's all that matters.


Perhaps an instantiation of what I'm talking about will help. As a field geologist I have to sometimes put myself in hazardous situations which could cost me my life. When I'm doing this am I afraid? No. Why? because the beauty of what I am witnessing of nature is more than worth my life. You doubt it? Well, I put my money where my mouth is. And the photo that I am about to show you wasn't even the most hazardous situation in my last field survey. It just happened to be the only shot I took that turned out well. But believe when I say that when I took this shot, my life was most definitely at risk.

http://ericfdiaz.webs.com/image4.jpg

What you're looking at is an extremely weathered limestone overhang with a 40 foot drop down to a concrete division from the asphalt road. Was I in danger? Absolutely! Was I afraid? No! Did I know what I was doing? You betcha! Could the average layperson take a shot like this without falling to his or her death. Probably not.

So again I reiterate the question.....are you afraid or not? Because in the final analysis that's all that matters. Because if you are, then scientific investigation is not for you. It is better if you bury your head in the sand and live in your own private fantasy world. The universe contains wonders and horrors, which are not only more than you imagine, but more than you can possibly imagine. I think I'm quoting someone inadvertently, but I don't remember whom it is that I am quoting. This universe is not for the meek, I'm sorry to have to say.

Eric
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Old 05-November-2009, 08:00 AM
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As far as the sun goes, if it wants to stare me down, then I will stare it down back! LOL
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Old 05-November-2009, 08:20 AM
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Let me put it another way which perhaps you can understand. Our universe is a very violent and dangerous place for such fragile corporeal beings such as we. And our understanding of the universe in which we live is that of a helpless infant.
Who are you having this discussion with? I'm not aware of anyone in this thread (yet) expressing fear about what's going on.

BTW, have you ever read Sartres or other existentialists?
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Old 05-November-2009, 08:45 AM
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I realize that this is a very high-level discussion, with sources provided and quoted that the average person probably could not understand. But it is a logical fallacy to presume that the person with greater formal training necessarily is better informed and even correct in both his interpretation or conclusions on this or any issue.
It isn't a logical fallacy to assume that a person with greater formal training is necessarily better informed. Its a fair assumption based on reasonable expectations.

But it IS a fallacy to claim that because a person is an expert in X therefore whatever that person says about X must be true.

An expert is someone to whom the probability of being wrong in an area of expertise is much smaller than other people's. But its not zero.

Experts can be wrong.
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Old 05-November-2009, 09:00 AM
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P.S.

Just for the record, I don't like equations. There is nothing more dead than an equation. If you can't articulate your ideas in plain English, that in itself indicates to me that you really don't know what you're talking about. The greatest scientific minds in all of history have been able to express their ideas in the idiomatic language in which they were fluent. Galileo not only wrote in Latin, the then official language of scholars, but also in Italian! I can speak and read and write many languages, including the language of mathematics. But if you express yourself in computations, your expression will fall on deaf ears with respect to me. I only give one warning and this is it! Debes laudare tuum bonum fortunum!

Sincerely,

Eric F. Diaz
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Old 05-November-2009, 01:25 PM
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It isn't a logical fallacy to assume that a person with greater formal training is necessarily better informed. Its a fair assumption based on reasonable expectations.

But it IS a fallacy to claim that because a person is an expert in X therefore whatever that person says about X must be true.

An expert is someone to whom the probability of being wrong in an area of expertise is much smaller than other people's. But its not zero.

Experts can be wrong.
Do I need to explicate the fallacy? 1) appealing to authority is a logical fallacy simply because it has no relevance to any given argument and 2) in this particular instance how do you know that each person is telling the truth about his or her credentials? I can't verify the veracity of one of the individual's claims in this discussion. I challenge you to do what I have not been able to do!
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Old 05-November-2009, 04:26 PM
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When push comes to shove we don't know Sh+& about our own star.
Thanks to Bauters who helped in establishing heliochromology, we at least now know its true color.
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Old 05-November-2009, 07:36 PM
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New sunspots continue to have less and less magnetic field strength. This is the magnetic field intensity of the last sunspot 1029.

As Livingston and Penn note, if the magnetic field strength of new sunspots drops to 1500 gauss, the sunspot rope that rises from the solar tachocline will be broken up in the solar convection zone.

This is a graph that shows how solar geomagnetic field disturbances have dropped.


http://wattsupwiththat.files.wordpre...ndex_oct09.png


http://wattsupwiththat.files.wordpre...mbral_data.png


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Old 05-November-2009, 07:59 PM
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EricFD, I think folks are curious about the Suns behaviour, I havent detected anyone being fearful in this thread. If there is apprehension of how solar changes may effect climate it is to be expressed in the AGW thread.

In anycase according to Solar Cycle 24 page there is a northern hemisphere plage of cycle 23 polarity today. I thought the old cycle sunspots were supposed to be equatorial?
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Old 05-November-2009, 08:02 PM
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Thanks William, It seems things are continuing as forecast by Penn and Livingstone.
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Old 05-November-2009, 08:06 PM
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Thank you, William. I appreciate the update.
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Old 05-November-2009, 08:58 PM
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Who are you having this discussion with? I'm not aware of anyone in this thread (yet) expressing fear about what's going on.

BTW, have you ever read Sartres or other existentialists?
The fear is tacit within the discussion at hand. To some it's obvious. To others it is non-existent.

Eric
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Old 06-November-2009, 03:40 AM
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The fear is tacit within the discussion at hand. To some it's obvious. To others it is non-existent.

Eric
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In reply to Eric'sThe fear is tacit within the discussion at hand. To some it's obvious. To others it is non-existent.
Eric,

You have 20 comments in this thread which have nothing to do with solar observations or science. Please start your own thread to discuss what ever is on your mind.

This thread is reserved for Cycle 24 observations, papers, and discussions related to cycle 24. If there is nothing to say this thread will appropriately move down.

Last edited by William; 06-November-2009 at 11:06 PM.. Reason: spelling
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Old 06-November-2009, 05:37 PM
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There's no legend with that graph, can you provide?
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Old 06-November-2009, 08:17 PM
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There's no legend with that graph, can you provide?

Hi Mantiss,

Lief Svalgaard’s graph shows sunspot “umbral intensity” -vs- the sunspot total magnetic field strength vs month when the sunspot was formed. (Umbral is the name for the center of the sunspot and is the darkest part of the sunspot. Intensity is the temperature difference of the center of the sunspot as compared to the solar photosphere outside the sunspot.)

This a link to Livingston and Penn’s second paper that discusses their finding that the magnetic field strength of each new sunspot formed on the sun is linearly decreasing as compared to previously produced sunspots.

http://www.leif.org/EOS/2009EO300001.pdf


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Fig. 2. The observed infrared intensity in the darkest position of sunspot umbrae is plotted versus the magnetic field strength for 1392 sunspots (using the Zeeman splitting of the neutral iron spectral line at 1564.8 nanometers). A quadratic fit to the data is also shown. The measurements are from the entire data set observed from 1992 to 2009.
http://wattsupwiththat.files.wordpre...esire_fig3.png

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[Penn and Livingston, 2006], and the observations showed that the magnetic field strength in sunspots were decreasing with time, independent of the sunspot cycle. A simple linear extrapolation of those data suggested that sunspots might completely vanish by 2015.

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“According to our measurements, sunspots seem to form only if the magnetic field is stronger than about 1500 gauss,” says Livingston. “If the current trend continues, we’ll hit that threshold in the near future, and solar magnetic fields would become too weak to form sunspots.” "This work has caused a sensation in the field of solar physics,” comments NASA sunspot expert David Hathaway, who is not directly involved in the research. “It’s controversial stuff.”
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Sunspots are dark regions on the solar disk with magnetic field strengths greater than 1500 gauss (see Figure 1), and the 11- year sunspot cycle is actually a 22- year cycle in the solar magnetic field, with sunspots showing the same hemispheric magnetic polarity on alternate 11- year cycles.

This is a 2007 paper by Penn and MacDonald that discuss what are the implications of changes in sunspot magnetic field strength.

http://www.iop.org/EJ/article/1538-4...0-e6afee23350b


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The sunspot magnetic field strengths may probe the source toroidal field within the Sun; sunspot umbral brightness was observed to increase during the solar cycle by Albregtsen & Maltby (1981) and Schussler (1980) suggested that the source toroidal flux tube was degraded during the solar cycle by radiative heating or shredding by convection. A competing idea is that the sunspot field strength provides information about how magnetic fields erupt from the internal toroidal source field. Work from Schussler et al. (1994) suggests that flux tubes of a certain magnetic field strength are stable against eruption at low latitudes but not at high latitudes, and so sunspot magnetic fields would vary with latitude during the solar cycle. A latitudinal dependence of umbral brightness was observed by Norton & Gilman (2004). Results from the KPVT data analysis are discussed with regard to these ideas.
From Wikipedia

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The sunspot itself can be divided into two parts:
• The central umbra, which is the darkest part, where the magnetic field is approximately vertical (normal to the sun's surface).
• The surrounding penumbra, which is lighter, where the magnetic field lines are more inclined.
Sunspots are temporary phenomenons on the surface of the Sun (the photosphere) that appear visibly as dark spots compared to surrounding regions. They are caused by intense magnetic activity, which inhibits convection, forming areas of reduced surface temperature. Although they are at temperatures of roughly 5,000–6,500 K, the contrast with the surrounding material at about 5,800 K leaves them clearly visible as dark spots, as the intensity of a heated black body (closely approximated by the photosphere) is a function of T (temperature) to the fourth power. If a sunspot were isolated from the surrounding photosphere it would be brighter than an electric arc.

Last edited by William; 06-November-2009 at 11:09 PM.. Reason: correct authors name
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Old 06-November-2009, 08:33 PM
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There is some disagreement and discussion as to how solar cycle 24 will unfold. This review paper by Karen Harvey summarizes how normal solar cycles unfold and the normal patterns and normal pattern variation that has been found by observing past solar cycles. Most of the solar cycle predictions used historic pattern observations to try to predict how large cycle 24 would be.

Obviously something has changed in the sun so it is not clear what will happen next. As solar cycle 24 is anomalous there are no past solar cycles in which to compare. Lief Svalgaard has noted that cycle 24 is progressing in some solar parameters as compared to past solar cycles so cycle 24 could be a rump cycle followed by a Maunder or a Dalton minimum, rather than an abrupt cycle interruption.

I will keep an eye out for new papers or observations and will update this thread.

http://www.leif.org/EOS/1992ASPC-Harvey.pdf

This is an interesting link that provides a sunspot by sunspot summary of cycle 24.

http://solarb.msfc.nasa.gov/

Last edited by William; 07-November-2009 at 04:23 PM.. Reason: grammar
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Old 07-November-2009, 03:00 PM
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I noticed that they did not label sunspot 1030 a cycle 23 spot even though its polorarity was reverse of cycle 24. Anyone have any ideas why the change in nomenclature and any ideas on why it was relatively high in lattitude for an old cycle sunspot?
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Old 07-November-2009, 04:22 PM
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I noticed that they did not label sunspot 1030 a cycle 23 spot even though its polorarity was reverse of cycle 24. Anyone have any ideas why the change in nomenclature and any ideas on why it was relatively high in lattitude for an old cycle sunspot?
Hi flyjack1,

Sunspot 1030 is designated a cycle 24 sunspot because it appeared at a high latitude location even though it is reversed magnetic polarity as compared to the normal cycle 24 sunspots.

Sunspot 1030 is an exceptionally weak sunspot. The polarity of very weak sunspots can be either normal or reversed magnetic polarity with almost equal probability.

The reason for this observation can be explained as follows.

Assuming the magnetic rope which forms sunspots is produced at the tachocline (interface of the solar radiative zone and the solar convection zones), if the magnetic rope field strength is weak the rope is twisted and pulled apart as it moves through the convection zone, which would explain why weak sunspots can be either normal or reversed magnetic polarity.
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Old 07-November-2009, 04:39 PM
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Thanks again William, I suppose this makes sense. I had it in my mind that reverse polarity spots became more or less non-existent once the the new cycle was in process in earnest.
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Old 07-November-2009, 10:46 PM
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Sunspot 1030 is designated a cycle 24 sunspot because it appeared at a high latitude location even though it is reversed magnetic polarity as compared to the normal cycle 24 sunspots.
<HUMOR=ON> Perhaps it's a cycle 25 sunspot coming early <HUMOR=OFF>
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Old 08-November-2009, 01:15 AM
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<HUMOR=ON> Perhaps it's a cycle 25 sunspot coming early <HUMOR=OFF>
Or at least its acting very fickle at a minimum! If you will pardon the Pun.
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Old 08-November-2009, 11:45 AM
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Assuming the magnetic rope which forms sunspots is produced at the tachocline (interface of the solar radiative zone and the solar convection zones), if the magnetic rope field strength is weak the rope is twisted and pulled apart as it moves through the convection zone, which would explain why weak sunspots can be either normal or reversed magnetic polarity.
I am sorry, but I have to disagree here. The tachocline is the boundary between the radiative zone and the convection zone deep inside the sun. Now, onlz in the convective region can magnetic field be generated and amplified by the so called α and ω dynamo processes can happen.

It is not that immedately at this boundary magnetic field is generated and "has to travel through the ominous convective zone" and survive or not. In any plasma there will be small loops of magnetic field generarated through random processes. Only when there is some mechanism that can amplify these seed fields (a dynamo) can there be significant magnetic field in the end. The best and most comprehensive description of the α-ω dynamo in my view has been written by my good friend and colleague Karl-Heinz Glassmeier (in the introduction part, forget about the feedback mechanism). The passage of the seed fields through the convection zone will cause the magnetic field to be amplified.

So, the idea of magnetic field ropes being created at the tachocline and "fighting their way through the convection zone" is highly incorrect.
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Old 08-November-2009, 03:18 PM
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I am sorry, but I have to disagree here. The tachocline is the boundary between the radiative zone and the convection zone deep inside the sun. Now, onlz in the convective region can magnetic field be generated and amplified by the so called α and ω dynamo processes can happen.

It is not that immedately at this boundary magnetic field is generated and "has to travel through the ominous convective zone" and survive or not. In any plasma there will be small loops of magnetic field generarated through random processes. Only when there is some mechanism that can amplify these seed fields (a dynamo) can there be significant magnetic field in the end. The best and most comprehensive description of the α-ω dynamo in my view has been written by my good friend and colleague Karl-Heinz Glassmeier (in the introduction part, forget about the feedback mechanism). The passage of the seed fields through the convection zone will cause the magnetic field to be amplified.

So, the idea of magnetic field ropes being created at the tachocline and "fighting their way through the convection zone" is highly incorrect.

Observational evidence and theoretical analyzes supports the assertion that the sunspot magnetic ropes are created in the tachocline and that they arrive on the surface of the sun fully formed.

There is not sufficient time as the magnetic rope rises up through the convection zone nor is there a smooth pattern of flow in the convection zone to amplify the magnetic ropes to form the sunspots. The sunspot rope is not amplified as it move up through the convection zone.

If you read Livingston and Penn's paper they note if the magnetic field strength of individual sunspots drops below 1500 gauss the sunspots will not survive the trip through the convection zone. Now the last cycle's sunspots are the seeds for the next cycles sunspots.

http://www.leif.org/EOS/2009EO300001.pdf

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[Penn and Livingston, 2006], and the observations showed that the magnetic field strength in sunspots were decreasing with time, independent of the sunspot cycle. A simple linear extrapolation of those data suggested that sunspots might completely vanish by 2015.
Quote:
“According to our measurements, sunspots seem to form only if the magnetic field is stronger than about 1500 gauss,” says Livingston. “If the current trend continues, we’ll hit that threshold in the near future, and solar magnetic fields would become too weak to form sunspots.” "This work has caused a sensation in the field of solar physics,” comments NASA sunspot expert David Hathaway, who is not directly involved in the research. “It’s controversial stuff.”
This explains why there is Maunder minimum. When the tachocline is interrupted the magnetic ropes formed at the tachocline no longer have sufficient magnetic field strength to survive the trip through the convection zone. Now the question is how does the cycle restart without the past sunspot seed.

As I said there is a long list of cyclic geological phenomena discussed in papers that show the solar cycle restarts with a series of massive CME. I will start a new thread in science later.


"Journey from the Center of the Sun", Jack Zirker pages 244/245

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When he finished in 1985, he confirmed Gilman in all essential respects: with the theory they had adopted, sunspots would migrate toward the poles not the equator.

Needless to say, these failures were very distressing. The best minds had used the best physics and … and come up with the wrong result.

In the midst of the post-mortems, the first helioseismic maps of solar rotation were published. As we saw … these maps showed that at each solar latitude, the top and bottom of the convection zone have about the same rotational speed. In other words, there is no radial variation in angular speed, contrary to the assumptions of both kinematic and dynamic modelers.

Other problems with solar cycle models began to surface. They centered on those magnetic ropes that turn into sunspots. As we know, the field strength in a large spot can reach 3000 gauss. In order for the field to build up to this level the sun would need sufficient time to wrap a weak polar field many times around the equator. But Gene Parker showed in 1975 that buoyant rope would rise through the convection zone in much less than eleven years and would reach the surface much weaker than 3000 gauss....

Even worse, a rope with a field strength of only 3000 gauss would be chewed to bits by the vigorous convection cells it passes on its way to the surface. A field strength of at least 10,000 gauss would be need to survive the trip...

But that raises yet another problem. Such strong fields would be stiff. They would resist being twisted by a cyclonic convection...)

A New Look
Several theorists pointed out that the ideal place to store a magnetic rope was just beneath the convection zone, at the boundary with radiative zone. Convection motion would overshoot the boundary slightly, push down the buoyant rope, and keep it submerged almost indefinitely. … field could reach 100,000 guass without bobbing up.



http://www.iop.org/EJ/abstract/1367-2630/9/8/302

Quote:
Structure and Stability of the Solar Tachocline by G. Rudiger and L. Kitchatinov
The strong rotational shear inside the tachocline is believed to be important for the solar magnetic activity (Hughes et al 2007). Even the solar cycle may originate from the tachocline or its vicinity (Rüdiger and Brandenburg 1995). Also other stars with convective envelopes will possess tachoclines. Strong differences in the magnetic activity between fully convective stars which cannot have tachoclines and solar-type stars with their convective envelopes can then be expected (cf Donati et al (2007)).

The solar tachocline parameters are well known from helioseismology. The tachocline thickness is about 4% of the solar radius, its midpoint radius is (0.692 ± 0.005)R⊙, and it is slightly prolate in shape (Antia et al 1998; Charbonneau et al 1999b; Kosovichev 1996). The tachocline is located mainly if not totally beneath the base of the convection zone at Rin = 0.713R⊙ (Basu and Antia 1997; Christensen-Dalsgaard et al 1991) in the uppermost radiative zone.

Last edited by William; 08-November-2009 at 05:05 PM.. Reason: grammar
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Old 08-November-2009, 06:44 PM
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Observational evidence and theoretical analyzes supports the assertion that the sunspot magnetic ropes are created in the tachocline and that they arrive on the surface of the sun fully formed.
Well, duh, of course they arrive at the surface of the sun fully formed.

The start of the creation of the magnetic field starts as soon as it is possible to be generated and amplified. It is a rediculous notion to claim that magnetic ropes are created at the tachocline, the field has not even had time to get amplified from its seedling.

Quote:
Originally Posted by William View Post
There is not sufficient time as the magnetic rope rises up through the convection zone nor is there a smooth pattern of flow in the convection zone to amplify the magnetic ropes to form the sunspots. The sunspot rope is not amplified as it move up through the convection zone.
How do you know that there is not enough time? You don't even understand how magnetic fields are formed in the convective layer of the sun. You seem to think that suddenly on the boundary of the radiative and convective layer humongous magnetic ropes jump into existence and then get send up by the convection and/or buoyancy. You really need to learn the basics of dynamo action in the sun.

Quote:
Originally Posted by William View Post
If you read Livingston and Penn's paper they note if the magnetic field strength of individual sunspots drops below 1500 gauss the sunspots will not survive the trip through the convection zone. Now the last cycle's sunspots are the seeds for the next cycles sunspots.
So what? What does that have to do with your misunderstanding of how the magnetic field in the sun is created?

In the paper they say:
Quote:
Originally Posted by Livingston & Penn
Sunspots are dark regions on the solar disk with magnetic field strengths greater than 1500 gauss (see Figure 1), ...
which means if no field stronger than 1500 nT breaks through the surface of the sun, there will be no sunspot. It does not mean that fields of 1500 nT (magically) appearing at the tachocline cannot get whole through the convection zone. Nothing of the kind is said in the EOS paper.

Quote:
Originally Posted by William View Post
This explains why there is Maunder minimum. When the tachocline is interrupted the magnetic ropes formed at the tachocline no longer have sufficient magnetic field strength to survive the trip through the convection zone. Now the question is how does the cycle restart without the past sunspot seed.
No, it does not, however do you come to that conclusion?
"the tachocline is interrupted" What kind of nonsense is that, this is a boundary between the inner radiative zone of the sun and the outer convective zone of the sun. How can that be interrupted? By stopping convection? By making the radiative zone convective, or what? And again, magnetic ropes are not created at the tachocline. And there is most definitely no "sunspot seed". There is a seed magnetic field consisting of tiny loops, that get amplified by the dynamo action in the convective zone of the sun.

Quote:
Originally Posted by William View Post
As I said there is a long list of cyclic geological phenomena discussed in papers that show the solar cycle restarts with a series of massive CME. I will start a new thread in science later.
Don't bother starting a new thread if your understanding of CMEs is as good as your understanding of how magnetic fields are created in the sun. E.g. your previous claim that "CMEs are not understood where they come from" (or something of the kind) so your clear lack of understanding.

Quote:
Originally Posted by William View Post
"Journey from the Center of the Sun", Jack Zirker pages 244/245
blah blah
So this nonsense about a magnetic rope etc. is not from Livingstong and Penn, but from Zirker, whom I don't know. But apparently, he has not kept up with modern dynamo theory, when he calls as evidence a quote from Parker from 1975. Things have developed quite a bit in the last 35 years. 1975 was like the cradle days of dynamo theory. And Zirker's book, although republished as a paperback in 2004, the book originates from 1980.


Quote:
Originally Posted by William View Post
Yes and ....
Naturally, there will be instabilities on this boundary as there is at least a velocity shear, the qualities of both plasmas are different etc. etc.

I know this is part of your "CSI method of doing research", but you have to understand what you are reading and have to be able to judge whether something is old or left behind for something more modern or better.
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Old 08-November-2009, 07:37 PM
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Again, how are William's assertions and conclusions not ATM?

CJSF
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Old 08-November-2009, 08:31 PM
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Jack Zirkers' book was published in 2002. The following is an excerpt from a Hinode paper published in 2009.

Please note I am stating what Zirker stated. I appropriately included an exact quote of Zirker's words.

If new data and papers disproved Zirker's statement, I accept that. I am not presenting my theory.

The Hinode paper seems to state what Zirker stated, that the dynamo mechanism cannot create the necessary magnetic field strength of a sunspot.

Hinode on the page that announced their finding of the source of the solar wind, included a note that the mechanism that forms the sunspots is not understood.


http://www.cospa.ntu.edu.tw/aappsbul...3/11Hinode.pdf


Quote:
These activities on the surface of the star are driven by magnetic field created by interaction of flow and fields below the photosphere (dynamo mechanism). The magnetic field strength on the surface of the sun exceeds 1 kG, while that at the bottom of the convection zone may reach 100 kG. They are too strong, far stronger than the equi-partition magnetic field strength, whose energy is the same as that of the local convection motion. Though a dynamo mechanism can amplify field strength up to the equipartition field strength, it is perceived not possible to have field strength beyond the threshold. Such too-strong magnetic field can be found elsewhere in the universe, namely pulsers (1012G), magneters (1015G), galaxies and clusters of galaxies (a few micro G), which is again too strong in terms of that in early universe (10-17G, [4]). Dynamo mechanism for the sun and these objects is poorly understood.
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Old 08-November-2009, 08:48 PM
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Originally Posted by Christopher Ferro View Post
Again, how are William's assertions and conclusions not ATM?

CJSF
Christopher,
What I am saying is backed up by papers and observation.

There is observational evidence and papers that indicate the sun may be moving towards a minimum.

Does anyone now why the sun could be moving towards a minimum?

I do not know why!!!

http://science.nasa.gov/headlines/y2..._longrange.htm

http://science.nasa.gov/headlines/y2...p_sunspots.htm


Quote:
Sunspots may vanish by 2015, W. Livingston & M. Penn

Sunspot umbral magnetic fields also show systematic temporal changes during the observing period as demonstrated by the sample spectra in Figure 1. The infrared Fe 1564.8 nm is a favorable field diagnostic since the line strength changes less than a factor of two between the photosphere and spot umbra and the magnetic Zeeman splitting is fully resolved for all sunspot umbrae. In a histogram plot of the distribution of the umbral magnetic fields that we observe, 1500 Gauss is the smallest value measured. Below this value photospheric magnetic fields do not produce perceptible darkening. Figure 3 presents the magnetic fields smoothed by a 12 point running mean from 1998 to 2005. The ordinate is chosen so that 1500 G is the minimum. A linear fit to the changing magnetic field produces a slope of 77 Gauss per year, and intercepts the abscissa at 2015. If the present trend continues, this date is when sunspots will disappear from the solar surface. (Italics include in paper. my comment.)
http://97.74.127.8/wp-content/uploads/2008/08/mag1.png



http://www.ann-geophys.net/20/115/20...0-115-2002.pdf

Quote:
Prolonged minima and the 179-yr cycle of the solar inertial motion, Rhodes W. Fairbridge and James H. Shirley, January 1987

We employ the JPL long ephemeris DE-102 to study the inertial motion of the Sun for the period A.D. 760–2100. Defining solar orbits with reference to the Sun's successive close approaches to the solar system barycenter, occurring at mean intervals of 19.86 yr, we find simple relationships linking the inertial orientation of the solar orbit and the amplitude of the precessional rotation of the orbit with the occurrence of the principal prolonged solar activity minima of the current millenium (the Wolf, Spörer, and Maunder minima). The progression of the inertial orientation parameter is controlled by the 900-yr great inequality of the motion of Jupiter and Saturn, while the precessional rotation parameter is linked with the 179-yr cycle of the solar inertial motion previously identified by Jose (1965). A new prolonged minimum of solar activity may be imminent.
http://www.ann-geophys.net/20/115/20...0-115-2002.pdf

Quote:
The 2400-year cycle in atmospheric radiocarbon concentration: bispectrum of 14C data over the last 8000 years

We have carried out power spectrum, time-spectrum and bispectrum analyses of the long-term series of the radiocarbon concentrations deduced from measurements of the radiocarbon content in tree rings for the last 8000 years. Classical harmonic analysis of this time series shows a number of periods: 2400, 940, 710, 570, 500, 420, 360, 230, 210 and 190 years. A principle feature of the time series is the long period of 2400 years, which is well known. The lines with periods of 710, 420 and 210 years are found to be the primary secular components of power spectrum. The complicated structure of the observed power spectrum is the result of 2400-year modulation of primary secular components. The modulation induces the appearance of two side lines for every primary one, namely lines with periods of 940 and 570 years, of 500 and 360 years, and 230 and 190 years. The bispectral analysis shows that the parameters of carbon exchange system varied with the _2400-year period during the last 8000 years. Variations of these parameters appear to be a climate effect on the rate of transfer of 14C between the atmosphere and the ocean.

Time comparison of the epochs of high and low solar activity with climate alteration led to the conclusion that the cause of the approx. 2400-year cycle, both in the 14C concentration and in climate of the Earth, appears to be of a solar nature (Dergachev and Chistyakov, 1995).
http://adsabs.harvard.edu/abs/2003SPD....34.0603S


Quote:
Solar Activity Heading for a Maunder Minimum?

My colleagues and I have developed some understanding for how these methods work and have expanded the prediction methods using "solar dynamo precursor" methods, notably a "SODA" index (SOlar Dynamo Amplitude). These methods are now based upon an understanding of the Sun's dynamo processes- to explain a connection between how the Sun's fields are generated and how the Sun broadcasts its future activity levels to Earth. This has led to better monitoring of the Sun's dynamo fields and is leading to more accurate prediction techniques. Related to the Sun's polar and toroidal magnetic fields, we explain how these methods work, past predictions, the current cycle, and predictions of future of solar activity levels for the next few solar cycles.

The surprising result of these long-range predictions is a rapid decline in solar activity, starting with cycle #24. If this trend continues, we may see the Sun heading towards a "Maunder" type of solar activity minimum - an extensive period of reduced levels of solar activity. For the solar physicists, who enjoy studying solar activity, we hope this isn't so, but for NASA, which must place and maintain satellites in low earth orbit (LEO), it may help with reboost problems. Space debris, and other aspects of objects in LEO will also be affected.

Last edited by William; 08-November-2009 at 09:01 PM.. Reason: added link to quote
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Old 08-November-2009, 09:02 PM
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But your conclusions are based on what a mainstream scientist has been telling you are misunderstandings and gross inaccuracies on how the sun works. Fine, we may be headed for a "Maunder" type minimum. That's fine. And if that's all you are saying, based on some scientests' specualations and research, okay. But it appears your understanding of the Sun is flawed, at least according to mainstream science.

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Old 08-November-2009, 09:13 PM
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Quote:
Originally Posted by Christopher Ferro View Post
But your conclusions are based on what a mainstream scientist has been telling you are misunderstandings and gross inaccuracies on how the sun works. Fine, we may be headed for a "Maunder" type minimum. That's fine. And if that's all you are saying, based on some scientests' specualations and research, okay. But it appears your understanding of the Sun is flawed, at least according to mainstream science.

CJSF
Solar cycle #24

The papers I am quoting are from mainstream scientists. Mainstream scientists are stating the sun could be heading towards a Maunder minimum.

I would suggest we keep watching for more solar observational data and papers.
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Old 09-November-2009, 07:52 AM
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Quote:
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Jack Zirkers' book was published in 2002. The following is an excerpt from a Hinode paper published in 2009.
Yes, amazon shows for Zirker's book a first publication in 1980, then another one in 2001, and one in 2002 and a paperback in 2008 (se here. Did he edit the book after more than 20 years or is the content the same as in 1980?

Quote:
Originally Posted by William View Post
Please note I am stating what Zirker stated. I appropriately included an exact quote of Zirker's words.

If new data and papers disproved Zirker's statement, I accept that. I am not presenting my theory.

The Hinode paper seems to state what Zirker stated, that the dynamo mechanism cannot create the necessary magnetic field strength of a sunspot.

Hinode on the page that announced their finding of the source of the solar wind, included a note that the mechanism that forms the sunspots is not understood.


http://www.cospa.ntu.edu.tw/aappsbul...3/11Hinode.pdf
That is just the scientific equivalent of a commercial, that is not a peer reviewed paper.

And although they indeed claim that the equipartition value of the magnetic field is too small in the introduction:

Quote:
They are too strong, far stronger than the equi-partition magnetic field strength, whose energy is the same as that of the local convection motion. Though a dynamo mechanism can amplify field strength upto the equi-partition field strength, it is perceived not possible to have field strength beyond the threshold. Such too-strong magnetic field can be found elsewhere in the universe, namely pulsers (1012G), magneters (1015G), galaxies and clusters of galaxies (a few micro G), which is again too strong in terms of that in early universe (10-17G, [4]). Dynamo mechanism for the sun and these objects is poorly understood.
(where we can comment that e.g. the fields of pulsars (not pulsers) is NOT created by a dynamo, instead the superfluidity and superconductivity of the matter in a neutron star, combined with other quantum mechanic processes are maintaining the very strong field, but that goes too far to discuss here).

But then a little later in the "paper" they write:

Quote:
It appears that convection layer has an inherent property to produce such
horizontal fields. We call this local dynamo process ([14] and references therein). It is totally unknown at this point how this new dynamo process and its resultant horizontal fields are related to global dynamo process, which produces sunspots.
WHOAH!!! Wait! Let me copy that again: how this new dynamo process and its resultant horizontal fields are related to global dynamo process, which produces sunspots.

Here is some sunday afternoon reading all papers with "solar dynamo model" in the title.

And BTW I noted that you did not address ANY of my complaints.
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