New WUWT Solar Images and Data Page

http://sdo.gsfc.nasa.gov/assets/img/latest/latest_512_4500.jpg

I’ve done some house cleaning and maintenance today to replace the aging SOHO image on the sidebar (which had not been updating since January 11th, thanks to Ric Werme for reminding me) with a new image from the Solar Dynamics Observatory (SDO) which provides stunning detail over the now 15 year old SOHO instrument.

We have a one-stop-shop for the most commonly used solar images and data in one place now.

See the WUWT Solar Images and Data Page here

Be sure to bookmark it or you can get it from the sidebar image or the pulldown menu under the WUWT header:

I’ve tried to include everything that I think might be interesting and pertinent, but I will entertain suggestions for new content below. Images and links only please.

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pyromancer76
January 23, 2011 9:47 am

Anthony, you inspire one of most interesting scientific teams debating on WUWT. The vigorous back and forth must affect at least the clarity of the research as well as informing us what the researchers mean, what they are up to, and why. Mine can only be a non-science perspective — wish I could do the maths and know how they do or do not verify experiment-theory, but my time budget must go elsewhere (even if I had the mind to do it). Even from here, this site has greatness written all over it. Thanks for commitment to the scientific method and attracting those who are its proponents and practicioners. It is delightfully warm here today.

January 23, 2011 10:00 am

pyromancer76 says:
January 23, 2011 at 9:47 am
attracting those who are its proponents and practicioners.
Even the ones that have no credibility?:
Geoff Sharp says: You are not credible.

January 23, 2011 10:34 am

vukcevic says:
January 23, 2011 at 1:45 am
Recent observations indicate that magnetic field lines of magnetic clouds do remain connected to the Sun [Larson et al., 1997].
Of course, that idea goes back 40 years.
I need you to respond to the following interpretation of what you believe:
The loop starts at the surface of the Sun goes out way past the planets and returns to the Sun. This is a net current, you say, so some process at the Sun is pumping electrons [or do you think that should be the much heavier protons] into the loop for many weeks or months [the loop lives that long], although the CME only last a few hours, the currents goes on and on, eventually from solar activity that has long died. The particles travel away from the Sun along the loop [while the solar wind and indeed the loop expand radially] and bend around at great distances [the loop has been wound around the sun several times by now] in order to return to the sun along the loop.
Is this what you believe?
If not, describe in your own words what it is.

January 23, 2011 10:50 am

Leif Svalgaard says:
January 23, 2011 at 9:38 am
The way to deal with the changed rules is to multiply all numbers [1610-2011] by 1.67, then multiply [again] all numbers before ~1947 by 1.20.
I would be equally satisfied with dividing all number after 1947 by 1.2 rather than raising the old numbers. Since NOAA now seems to have settled in to 1.6 of SIDC, we maintain agreement with NOAA by raising the pre-1947 numbers. Scientifically it makes no difference which way we do it, so practical considerations will take precedence.

January 23, 2011 10:53 am

Anthony Watts says:
January 23, 2011 at 10:48 am
Dudes, while you are arguing… nothing gets done.
since my plots is already on the Wolf scale [NOAA’s], I don’t need to change anything. I keep the SIDC data as ‘fly dirt’ only to see how it behaves. NOAA is king.

January 23, 2011 10:59 am

Leif Svalgaard says:
January 23, 2011 at 9:38 am
…………………
That is a false interpretation.
Hironori Shimazua,b,c, MotohikoTanaka: A flux rope requires a large electric current to maintain its magnetic field…the flux rope is maintained only by the electron current. This assumption is reasonable because the proton current alone cannot make a structure smaller than the proton cyclotron radius. Protons are assumed to have no bulk drift except for thermal motion….In the initial equilibrium, the electrons move along the magnetic field lines, and this electric current generates the magnetic field of the flux rope.
A.A. van Ballegooijen, E.E. DeLuca: The high conductivity of plasma implies that the electric currents can be maintained for a long period of time.
Implication is that electric current / magnetic field are still connected to the Sun, even if mass ejection has stopped some time before, and ejected mass of heavier particles may have moved some distance: as in this illustration : (orange shaded area)
http://ase.tufts.edu/cosmos/pictures/Sept09/Fig8_7.MagCloud.gif
During an impact with a magnetosphere the above electric current / magnetic field will be affected, and since they are still attached to the Sun, feedback will arise.
One thing is clear: you do not differentiate between electrons drift and the associated electric/magnetic field propagation.

DirkH
January 23, 2011 11:03 am

Anthony, now go play with your kids! And thanks for the solar page! It’s awesome!

January 23, 2011 11:10 am

vukcevic says:
January 23, 2011 at 10:59 am
That is a false interpretation.
I asked what your interpretation was and tried to describe what it looked like. You now say it is false…
Implication is that electric current / magnetic field are still connected to the Sun,
An electric current is the movements of charges, so the charges are still removed from the sun at all times [months] by some process, right?
One thing is clear: you do not differentiate between electrons drift and the associated electric/magnetic field propagation.
Explain to me what the difference is?

January 23, 2011 11:16 am

vukcevic says:
January 23, 2011 at 10:59 am
During an impact with a magnetosphere the above electric current / magnetic field will be affected, and since they are still attached to the Sun, feedback will arise.
Changes in the fields propagate through the plasma with the Alfven speed, about 40 km/sec while the plasma is moving away from the sun at 440 km/sec, therefore can never reach the Sun.

tallbloke
January 23, 2011 11:17 am

Leif Svalgaard says:
January 23, 2011 at 9:38 am
Furthermore dissipating power that far away from the sun has no ‘back effect’. The wind is 11 times supersonic.

As you keep telling us it is also very tenuous with only a relatively few particles per cubic meter. How would that stop something going the other way? Couldnt something moving the opposite way simply miss the oncoming particles by the laws of chance?

January 23, 2011 11:22 am

tallbloke says:
January 23, 2011 at 11:17 am
As you keep telling us it is also very tenuous with only a relatively few particles per cubic meter. How would that stop something going the other way? Couldnt something moving the opposite way simply miss the oncoming particles by the laws of chance?
The solar wind is effectively collisionless. The average distance between direct collisions is larger than 1 AU. The plasma, however, has a magnetic field and that means that disturbances can propagate even without collisions. Imagine two magnets at some distance from each other: moving one of them will exert a magnetic force on the other.

January 23, 2011 11:28 am

Anthony Watts says:
January 23, 2011 at 11:25 am
Geoff has updated his graph.
Good for him!

No, he still shows Fahrenheit and Centigrade on the same plot. He should remove the un-adjusted NOAA graph or plot it as ‘fly dirt’ so it is very inconspicuous. I don’t think I’ll live to see that done.

January 23, 2011 11:32 am

Geoff Sharp says:
January 23, 2011 at 3:56 am
I am still awaiting your response why you will not adjust your own graphs that use the NOAA unadjusted values.
And I’m still awaiting your plot of F10.7 and SSN for the minimum 20 years ago [this one: http://www.leif.org/research/F107%20and%20SSN%202.png ]
As you say: Time to man up

tallbloke
January 23, 2011 12:13 pm

Terrific resource, thanks Anthony.
Right, time to find my passport…

January 23, 2011 12:55 pm

Leif Svalgaard says:
January 23, 2011 at 11:10 am
……………
You got all that wrong !
1.Watch this NASA video

2. I suspected for some time that you do not (or whish not) to understand electric currents.
3. Read two quotes (in italics) from my previous post:
http://wattsupwiththat.com/2011/01/22/new-wuwt-solar-images-and-data-page/#comment-581271
Electric current for its propagation will utilise any electrons (solar wind etc) that happen to be in path of highest conductivity/lowest resistance (solar wind you say is of near infinite conductivity, very low resistance). While mass ejection lasts (for few hours) the current will start and close at the CME’s origin, but as mass ejection ends the current loop becomes independent from its initial location, so wrapping may end , as long there are enogh electrons in corona (to propagate electric field around the loop) current will flow (remember plasma has no resistance), force-free structure. The current will maintain the magnetic field within the loop:
Hironori Shimazua,b,c, MotohikoTanaka: A flux rope requires a large electric current to maintain its magnetic field…the flux rope is maintained only by the electron current.
A.A. van Ballegooijen, E.E. DeLuca: The high conductivity of plasma implies that the electric currents can be maintained for a long period of time.
The whole process, from a single CME, may lasts for some months, until CME hits heliopause
http://www.archive.org/details/CIL-10037or as in NASA’s
or http://www.youtube.com/watch?v=NZZr9TF1qI0

January 23, 2011 12:59 pm

Sorry link got corrupted, it should be:
http://www.archive.org/details/CIL-10037

Rational Debate
January 23, 2011 4:20 pm

Ok, since we have a number of sun guru’s here…. I’d be very interested in opinions on how much cosmic ray increase (or any other aspects of interest) that we might see if Betelgeuse were to go supernova? Thanks in advance for any input!

January 23, 2011 5:50 pm

vukcevic says:
January 23, 2011 at 12:55 pm
While mass ejection lasts (for few hours) the current will start and close at the CME’s origin, but as mass ejection ends the current loop becomes independent from its initial location, so wrapping may end , as long there are enogh electrons in corona (to propagate electric field around the loop) current will flow (remember plasma has no resistance), force-free structure. The current will maintain the magnetic field within the loop
You are beginning to see the light. The current is local to the loop and is no longer flowing from its initial location. The situation is the same as for the HCS. It persists indefinitely, but does not mean that there is a global current driven by an emf or a battery. The magnetic field structure locally maintains the current which in turn maintains the magnetic field. There is no stream of electrons [current] flowing from one foot point of the loop on the Sun, then along the loop to the other foot point on the Sun, flowing for months.
You still have this to explain:
One thing is clear: you do not differentiate between electrons drift and the associated electric/magnetic field propagation.
Explain to me what the difference is?

January 23, 2011 6:06 pm

Rational Debate says:
January 23, 2011 at 4:20 pm
I’d be very interested in opinions on how much cosmic ray increase (or any other aspects of interest) that we might see if Betelgeuse were to go supernova?
Here is a pointer:
http://www.pnas.org/content/92/1/235.full.pdf

u.k.(us)
January 23, 2011 6:57 pm

Leif Svalgaard says:
January 23, 2011 at 6:06 pm
Rational Debate says:
January 23, 2011 at 4:20 pm
I’d be very interested in opinions on how much cosmic ray increase (or any other aspects of interest) that we might see if Betelgeuse were to go supernova?
Here is a pointer:
http://www.pnas.org/content/92/1/235.full.pdf
======
If we were to see it, it would have went supernova about 640 years ago (per Wikipedia). The pictures of our sun we recieve are about 8 minutes old.

Editor
January 23, 2011 7:02 pm

Hello Leif
I am trying to understand any events that may impact Earth’s magnetosphere. Do I have the following events correctly classified?:
Cosmic – X-ray Pulsar:

http://www.youtube.com/watch?feature=player_detailpage&v=007-R6yVngU
Solar – Coronal Mass Ejection:

http://www.youtube.com/watch?v=BDZj1CmsJ64&feature=related
Solar – Magnetosphere Breach

http://www.youtube.com/watch?v=nVqWH5Qlg8Y&feature=related
Are there any other significant events that impact the magnetosphere, which I should be considering?

January 23, 2011 8:36 pm

Just The Facts says:
January 23, 2011 at 7:02 pm
trying to understand any events that may impact Earth’s magnetosphere. Do I have the following events correctly classified?
The X-rays and gamma rays do not have any direct influence on the magnetosphere [as they are just photons of light]. The other ones are OK.

January 23, 2011 8:42 pm

Good grief there at it again!!!
LOL A!
Anthony Watts says:
January 23, 2011 at 10:48 am
Leif and Geoff…
Dudes, while you are arguing… nothing gets done.
I’d be racing to see who can provide the adjusted plot first.
Just saying.
Mee too!