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Sun's Current Solar Activity Cycle Is Weakest in a Century
space.com ^ | | December 11, 2013 06:50pm ET | Mike Wall, Senior Writer

Posted on 12/13/2013 6:44:59 PM PST by Ernest_at_the_Beach

Aug. 9, 2011 solar flare in ultraviolet range

This still from a video taken by NASA's Solar Dynamics Observatory shows the Aug. 8, 2011 solar flare as it appeared in the ultraviolet range of the light spectrum. The flare registered as an X6.9 class sun storm, the largest of the Solar Cycle 24.

Credit: NASA/SDO/GSFC

SAN FRANCISCO — The sun's current space-weather cycle is the most anemic in 100 years, scientists say.

Our star is now at "solar maximum," the peak phase of its 11-year activity cycle. But this solar max is weak, and the overall current cycle, known as Solar Cycle 24, conjures up comparisons to the famously feeble Solar Cycle 14 in the early 1900s, researchers said.

"None of us alive have ever seen such a weak cycle. So we will learn something," Leif Svalgaard of Stanford University told reporters here today (Dec. 11) at the annual meeting of the American Geophysical Union. [Solar Max: Amazing Sun Storm Photos of 2013]

The learning has already begun. For example, scientists think they know why the solar storms that have erupted during Solar Cycle 24 have caused relatively few problems here on Earth.

The sun often blasts huge clouds of superheated particles into space, in explosions known as coronal mass ejections (CMEs). Powerful CMEs that hit Earth squarely can trigger geomagnetic storms, which in turn can disrupt radio communications, GPS signals and power grids.

But such effects have rarely been seen during Solar Cycle 24, even though the total number of CMEs hasn't dropped off much, if at all. The explanation, researchers said, lies in the reduced pressure currently present in the heliosphere, the enormous bubble of charged particles and magnetic fields that the sun puffs out around itself.

This lower pressure has allowed CMEs to expand greatly as they cruise through space, said Nat Gopalswamy of NASA's Goddard Space Flight Center in Greenbelt, Md. Indeed, Solar Cycle 24 CMEs are, on average, 38 percent bigger than those measured during the last cycle — a difference with real consequences for folks here on Earth.

"When the CMEs expand more, the magnetic field inside the CMEs has lower strength," Gopalswamy said. "So when you have lower-strength magnetic fields, then they cause milder geomagnetic storms."


TOPICS: Conspiracy; Science; Weather
KEYWORDS: catastrophism; climatechabnge; climatechange; globalwarming; globalwarminghoax
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1 posted on 12/13/2013 6:44:59 PM PST by Ernest_at_the_Beach
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To: Ernest_at_the_Beach

Time to sue Algore for damaging the sun with all the ‘carbon’ crap and taxing.


2 posted on 12/13/2013 6:50:06 PM PST by Leo Carpathian (FReeeeepeesssssed)
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To: Ernest_at_the_Beach
Our star is now at "solar maximum," the peak phase of its 11-year activity cycle.

The solar cycle is not "fixed" in duration. There are disputes about the period of the cycle. 11-17 years in some sources. Yes, we just began to come out of the longest and quietest sunspot minimum of my lifetime. Yes, the weather is more variable during sunspot minimums and maximums. No, the sky is not falling and No this is not a consequence of anything man has done.

3 posted on 12/13/2013 6:51:54 PM PST by Texas Fossil
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To: Ernest_at_the_Beach
Brrr.

It's cold over here.

4 posted on 12/13/2013 6:52:25 PM PST by Paladin2
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To: Paladin2
Cairo and Isabel had snow today!
5 posted on 12/13/2013 6:55:49 PM PST by Ernest_at_the_Beach
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To: Ernest_at_the_Beach

Gore-bal cooling! Better tax something.


6 posted on 12/13/2013 6:56:54 PM PST by pogo101
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To: Ernest_at_the_Beach

H/T to the Drudge Report.


7 posted on 12/13/2013 6:57:05 PM PST by Ernest_at_the_Beach
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To: All
At WUWT:

Over 2000 cold and snow records set in the USA this past week

8 posted on 12/13/2013 7:01:19 PM PST by Ernest_at_the_Beach
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To: SunkenCiv

fyi


9 posted on 12/13/2013 7:02:42 PM PST by Ernest_at_the_Beach
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To: Ernest_at_the_Beach

It snowed on Isabel? Where is she?


10 posted on 12/13/2013 7:09:52 PM PST by beethovenfan (If Islam is the solution, the "problem" must be freedom.)
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To: Tolerance Sucks Rocks

ping!


11 posted on 12/13/2013 7:13:36 PM PST by Ernest_at_the_Beach
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To: Ernest_at_the_Beach
Cairo and Isabel had snow today!

I know them! Cairo and Isabel Jackson - they own the Gab-N-Eat Diner over on Route 40!

12 posted on 12/13/2013 7:14:43 PM PST by GreenHornet
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To: Texas Fossil
The solar cycle is not "fixed" in duration.

Solar scientists determine the progress of a cycle by observing magnetic activity on the Sun. They create an image known as a magnetogram, where N/S polarity is depicted as black/white regions.

http://sohowww.nascom.nasa.gov/data/realtime/hmi_mag/1024/latest.html

13 posted on 12/13/2013 7:17:01 PM PST by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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Study shows it was warmer in Roman times than today
hotair.com | 2:46 pm on December 13, 2013 by | jeffdunetz
Posted on 12/13/2013 8:10:07 PM by BenLurkin
http://www.freerepublic.com/focus/chat/3101603/posts


14 posted on 12/13/2013 7:39:23 PM PST by SunkenCiv (http://www.freerepublic.com/~mestamachine/)
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To: Ernest_at_the_Beach; 75thOVI; agrace; aimhigh; Alice in Wonderland; AndrewC; aragorn; ...

Thanks Ernest_at_the_Beach.

15 posted on 12/13/2013 7:40:09 PM PST by SunkenCiv (http://www.freerepublic.com/~mestamachine/)
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To: ETL

Send this one to all the in denial global climate change
aquaintenances in your circle.

Don cammo, snag weapons and take a long walk in the woods.

Several days later you can relax and delete the flames from
your email.


16 posted on 12/13/2013 7:41:40 PM PST by theneanderthal
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To: Ernest_at_the_Beach
Tell that to the former wunderkomet ISON .....
17 posted on 12/13/2013 7:43:22 PM PST by mikrofon (No more ice on ISON ;)
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To: Ernest_at_the_Beach; SunkenCiv; All

First the low information “scientists” came up with the speculation of “Global Warming.”

When that speculation went bust they speculated that it was really “Climate Change.”

Myself, I’m ALMOST ready to speculate that what is really, REALLY is: “Weather Change.”

___________

Now where was I? I have so many data points! Why, I haven’t slept in a week!

No kidding, EVERY hour the weather changes! Oops! There is another change!

Just a few more data points and - - - !

Oh NOES! I skipped right over speculating on “Season Change!”

Merry Christmas one and all!


18 posted on 12/13/2013 7:45:36 PM PST by Graewoulf (Democrats' Obamacare Socialist Health Insur. Tax violates U.S. Constitution AND Anti-Trust Law.)
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To: theneanderthal

Huh?


19 posted on 12/13/2013 7:45:44 PM PST by ETL (ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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To: Leo Carpathian
Time to sue Algore for damaging the sun with all the ‘carbon’ crap and taxing.

Nah. The sun goddess needs a sacrifice. He'll do for starters.

20 posted on 12/13/2013 8:01:53 PM PST by Standing Wolf (No tyrant should ever be allowed to die of natural causes.)
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