Posted on 06/14/2011 10:48:13 PM PDT by Ernest_at_the_Beach
I’ve managed to get a copy of the official press release provided by the Southwest Research Institute Planetary Science Directorate to MSM journalists, for today’s stunning AAS announcement and it is reprinted in full here:
WHAT’S DOWN WITH THE SUN?
MAJOR DROP IN SOLAR ACTIVITY PREDICTED
Latitude-time plots of jet streams under the Sun's surface show the surprising shutdown of the solar cycle mechanism. New jet streams typically form at about 50 degrees latitude (as in 1999 on this plot) and are associated with the following solar cycle 11 years later. New jet streams associated with a future 2018-2020 solar maximum were expected to form by 2008 but are not present even now, indicating a delayed or missing Cycle 25.
A missing jet stream, fading spots, and slower activity near the poles say that our Sun is heading for a rest period even as it is acting up for the first time in years, according to scientists at the National Solar Observatory (NSO) and the Air Force Research Laboratory (AFRL).
As the current sunspot cycle, Cycle 24, begins to ramp up toward maximum, independent studies of the solar interior, visible surface, and the corona indicate that the next 11-year solar sunspot cycle, Cycle 25, will be greatly reduced or may not happen at all.
The results were announced at the annual meeting of the Solar Physics Division of the American Astronomical Society, which is being held this week at New Mexico State University in Las Cruces:
http://astronomy.nmsu.edu/SPD2011/
“This is highly unusual and unexpected,” Dr. Frank Hill, associate director of the NSO’s Solar Synoptic Network, said of the results. “But the fact that three completely different views of the Sun point in the same direction is a powerful indicator that the sunspot cycle may be going into hibernation.”
Spot numbers and other solar activity rise and fall about every 11 years, which is half of the Sun’s 22-year magnetic interval since the Sun’s magnetic poles reverse with each cycle. An immediate question is whether this slowdown presages a second Maunder Minimum, a 70-year period with virtually no sunspots during 1645-1715.
Hill is the lead author on one of three papers on these results being presented this week. Using data from the Global Oscillation Network Group (GONG) of six observing stations around the world, the team translates surface pulsations caused by sound reverberating through the Sun into models of the internal structure. One of their discoveries is an east-west zonal wind flow inside the Sun, called the torsional oscillation, which starts at
mid-latitudes and migrates towards the equator. The latitude of this wind stream matches the new spot formation in each cycle, and successfully predicted the late onset of the current Cycle 24.
“We expected to see the start of the zonal flow for Cycle 25 by now,” Hill explained, “but we see no sign of it. This indicates that the start of Cycle 25 may be delayed to 2021 or 2022, or may not happen at all.”
In the second paper, Matt Penn and William Livingston see a long-term weakening trend in the strength of sunspots, and predict that by Cycle 25 magnetic fields erupting on the Sun will be so weak that few if any sunspots will be formed. Spots are formed when intense magnetic flux tubes erupt from the interior and keep cooled gas from circulating back to the interior. For typical sunspots this magnetism has a strength of 2,500 to 3,500 gauss
(Earth’s magnetic field is less than 1 gauss at the surface); the field must reach at least 1,500 gauss to form a dark spot.
Average magnetic field strength in sunspot umbras has been steadily declining for over a decade. The trend includes sunspots from Cycles 22, 23, and (the current cycle) 24.
Using more than 13 years of sunspot data collected at the McMath-Pierce Telescope at Kitt Peak in Arizona, Penn and Livingston observed that the average field strength declined about 50 gauss per year during Cycle 23 and now in Cycle 24. They also observed that spot temperatures have risen exactly as expected for such changes in the magnetic field. If the trend continues, the field strength will drop below the 1,500 gauss threshold and
spots will largely disappear as the magnetic field is no longer strong enough to overcome convective forces on the solar surface.
Moving outward, Richard Altrock, manager of the Air Force’s coronal research program at NSO’s Sunspot, NM, facilities has observed a slowing of the “rush to the poles,” the rapid poleward march of magnetic activity observed in the Sun’s faint corona. Altrock used four decades of observations with NSO’s 40-cm (16-inch) coronagraphic telescope at Sunspot.
“A key thing to understand is that those wonderful, delicate coronal features are actually powerful, robust magnetic structures rooted in the interior of the Sun,” Altrock explained. “Changes we see in the corona reflect changes deep inside the Sun.”
Altrock used a photometer to map iron heated to 2 million degrees C (3.6 million F). Stripped of half of its electrons, it is easily concentrated by magnetism rising from the Sun. In a well-known pattern, new solar activity emerges first at about 70 degrees latitude at the start of a cycle, then towards the equator as the cycle ages. At the same time, the new magnetic fields push remnants of the older cycle as far as 85 degrees poleward.
“In cycles 21 through 23, solar maximum occurred when this rush appeared at an average latitude of 76 degrees,” Altrock said. “Cycle 24 started out late and slow and may not be strong enough to create a rush to the poles, indicating we’ll see a very weak solar maximum in 2013, if at all. If the rush to the poles fails to complete, this creates a tremendous dilemma for the theorists, as it would mean that Cycle 23’s magnetic field will not completely disappear from the polar regions (the rush to the poles accomplishes this feat). No one knows what the Sun will do in that case.”
All three of these lines of research to point to the familiar sunspot cycle shutting down for a while.
“If we are right,” Hill concluded, “this could be the last solar maximum we’ll see for a few decades. That would affect everything from space exploration to Earth’s climate.”
# # #
Media teleconference information: This release is the subject of a media
teleconference at the current meeting of the American Astronomical Society’s
Solar Physics Division (AAS/SPD). The telecon will be held at 11 a.m. MDT
(17:00 UTC) on Tuesday, 14 June. Bona fide journalists are invited to attend
the teleconference and should send an e-mail to the AAS/SPD press officer,
Craig DeForest, at deforest@boulder.swri.edu, with the subject heading “SPD:
SOLAR MEDIA TELECON”, before 16:00 UTC. You will receive dial-in information
before the telecon.
These results have been presented at the current meeting of the AAS/SPD.
Citations:
16.10: “Large-Scale Zonal Flows During the Solar Minimum — Where Is Cycle
25?” by Frank Hill, R. Howe, R. Komm, J. Christensen-Dalsgaard, T.P. Larson,
J. Schou & M. J. Thompson.
17.21: “A Decade of Diminishing Sunspot Vigor” by W. C. Livingston, M. Penn
& L. Svalgard.
18.04: “Whither Goes Cycle 24? A View from the Fe XIV Corona” by R. C.
Altrock.
Source:
Southwest Research Institute Planetary Science Directorate
http://www.boulder.swri.edu/~deforest/SPD-sunspot-release/SPD_solar_cycle_release.txt
Supplemental images: http://www.boulder.swri.edu/~deforest/SPD-sunspot-release/
Sooo . . .
I assume this means get a floor fan rather than a sweater, or the other way around?
Late night ping!
Mac Slavo
June 14th, 2011
While many will claim that solar storms are an unrealistic threat to our world, the governments of the United States and the United Kingdom aren’t taking any chances. According to a report put together by Alex Thomas of The Intel Hub, the threat is not only real, but very likely, and could change the world as we know it from one day to the next:
In a stunning announcement, The United States and United Kingdom are likely set to began “controlled” power cuts in preparation of a giant solar storm.
The announcement by Thomas Bogdan, the director of the US Space Weather Prediction Centre, comes a week after a large scale solar flare released a massive amount of radiation and threatened to cause moderate disruption.
The solar flare on June 7th, 2011 was luckily pointed away from Earth but caused many to wonder if another solar flare is imminent, this one aimed directly at earth.
(snip)
No, it means store food.
Fewer sunspots translates to cooler temperatures here on Earth. Another stake in the heart of the global warming zombies.
Just like the economy...
But seriously, I think that it's highly irritating that these scientists are finally figuring out what ham operators have been saying for years.
That is good!
This is good for a political argument. This is very, *very* bad for humanity.
The Alarmists will need to change their message!
Global Warming? Global Cooling?
Neither, more variability....
We have known for over 100 years that weather is more variable during sunspot minimums and sunspot maximums. It is about “change” in activity on the sun... Pretty simple?
Droughts, Floods and freaky weather.
Texas is the hottest and driest in most of the state since possibly 1895. Now some of our neighbors to the East have had terrible flooding.
We still cannot predict it, but it is more variable.
...and stock up on candles and coal.
Second thought, a nice new wool sweater couldn't hurt, either.
The zombies caught on, that's why they now call it "climate change". Hot, cold, or anything inbetween climate, they'll still demand your money.
I was really late getting off work and had to stop by the all night grocery to get a few items for wifey. Coast-to-Coast was playing over the intercom and they were talking about this.
Some Russian physicist worked this out a while ago. The key issue (if IRCC) is the center of mass of the solar system v the center of mass of the Sun. That’s mostly controlled by Jupiter’s orbit.
If the two are divergent, tidal forces in the Sun result in more solar activity.
If the two align, the sun gets quiet. And we get cold (for a number of reasons).
We’re in for more and longer cold, and it has NOTHING to do with CO2.
No, not really. From an article more than 2 years ago:
Yes, they will, but they can't demand their old predictions be wiped away from the Internet. Global warming falling to icy pieces is an example of how the Internet is changing our time as much as Gutenberg's press changed late medieval society.
Back in the olden days, we'd only have our memories to fall back on except for the patient few who could spend time (and spare the time for) looking through drafty microfilms of old newspapers, and dusty copies of old magazines and books. That option wasn't available for TV.
Those few would have had to rely upon alternative newsletters or magazines to get the word out. The only other option was writing personal letters.
The MSM started to be brought to heel by the VCR. The Soviet Union was brought down in part by the use of fax machines. The Internet and social networking have brought down several authoritarian regimes. No telling how far it will go...
There is no reason to believe that. As the article says, the last Maunder Minimum lasted 70 years (1645-1715). Humanity pulled through just fine.
The Earth will cool off by, perhaps, one-half a degree (exactly the amount it has warmed up since the last minimum) and the global warming zombies will have to transfer their hysteria to some other drug-induced danger they've imagined, perhaps pot blight or killer butterflies under their skin. Rest assured, it will soon metastasize into demands that we give up our cars and bottled water and leather goods and football and Christmas and Thanksgiving and that, from that moment on, we walk to work along dirt paths in our bare feet.
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