Articles Tagged "Solar News"

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Is 'global cooling' on the way? Lake sediment proves sun cooled earth 2,800 years ago - and it could happen again soon by Rob Waugh
Wednesday, May 9th 2012, 11:07 AM EDT
Co2sceptic (Site Admin)
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When the Greek poet Homer was writing The Odyssey around 2,800 years ago, the Earth went through an abrupt period of cooling, caused by the sun - and the same could happen again soon.

Scientists at the GFZ German Research Centre for Geosciences analysed lake sediment in Lake Meerfelder Maar, and found direct evidence of a sudden cooling caused by a 'solar minimum'.

Some scientists suspect that the current period of high solar activity - including increased sunspots and solar storms this year - will be followed by a 'minimum' period, which could even cause an Ice Age.


Click source for more: also read By Jove I Think They've Nearly Got It: Climatic effects of a solar minimum and this report from Lewis Page: Solar quiet spell like the one now looming cooled climate in the past - theregister.co.uk
Source Link: dailymail.co.uk/sciencetech
March solar flare was strongest yet seen by Kate Taylor: Updated with NASA YouTube
Wednesday, June 13th 2012, 2:52 AM EDT
Co2sceptic (Site Admin)
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The solar flare which erupted on March 7 was the most powerful eruption ever observed by Fermi's Large Area Telescope (LAT).

The flare, classified as X5.4, made the sun briefly the brightest object in the gamma-ray sky.

"For most of Fermi's four years in orbit, its LAT saw the sun as a faint, steady gamma-ray source thanks to the impacts of high-speed particles called cosmic rays," says Nicola Omodei, an astrophysicist at Stanford University in California. "Now we're beginning to see what the sun itself can do."

At the flare's peak, it was emitting gamma rays with two billion times the energy of visible light, or about four billion electron volts - easily setting a record for the highest-energy light ever detected during or immediately after a solar flare.
Source Link: tgdaily.com
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Solar Climate Change: 'Major Result' on Sunspot Cycle Announced : Now Updated with links
Saturday, June 11th 2011, 1:06 AM EDT
Co2sceptic (Site Admin)
Astronomers will unveil a "major result" on Tuesday (June 14) regarding the sun's 11-year sunspot cycle.

The announcement will be made at a solar physics conference in New Mexico, according to an alert released today (June 10) by the American Astronomical Society. The discussion will begin at 1 p.m. EDT (1700 GMT).

Currently, the sun is in the midst of its Solar Cycle 24, the 24th cycle since observations began.

Recently, the sun has begun rousing itself from an extended quiescent period. Over the past several months, our star has unleashed several immensely powerful flares and sent huge volumes of solar plasma rocketing toward Earth, in massive eruptions known as coronal mass ejections (CMEs).

In the near future, the flares and CMEs should get more frequent and more intense. Researchers predict that solar activity will peak sometime in 2013 or 2014.


Result of Announcement:

New Insights on How Solar Minimums Affect Earth by Karen C. Fox, NASA's Goddard Space Flight Center

Sun's Fading Spots Signal Big Drop in Solar Activity by Denise Chow, Space.com

Lewis Page: Earth may be headed into a mini Ice Age within a decade

David Whitehouse: Next Solar Cycle May Not Happen

Is the Sunspot Cycle About to Stop? by Jay M. Pasachoff

Next solar cycle may be weakest for centuries by Kate Taylor, TG Daily

Lawrence Solomon: NASA scientist reverses sunspot prediction, bolstering global cooling theory
Giv2.me - The Charity Donations Site
Sun may soon have four poles, say researchers by Seiji Tanaka
Saturday, April 21st 2012, 9:49 AM EDT
Co2sceptic (Site Admin)
Image AttachmentThe sun may be entering a period of reduced activity that could result in lower temperatures on Earth, according to Japanese researchers.

Officials of the National Astronomical Observatory of Japan and the Riken research foundation said on April 19 that the activity of sunspots appeared to resemble a 70-year period in the 17th century in which London’s Thames froze over and cherry blossoms bloomed later than usual in Kyoto.

In that era, known as the Maunder Minimum, temperatures are estimated to have been about 2.5 degrees lower than in the second half of the 20th century.

The Japanese study found that the trend of current sunspot activity is similar to records from that period.

The researchers also found signs of unusual magnetic changes in the sun. Normally, the sun’s magnetic field flips about once every 11 years. In 2001, the sun’s magnetic north pole, which was in the northern hemisphere, flipped to the south.
Source Link: ajw.asahi.com
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Sun's 11-year cycle means we're in for Arctic freeze this winter, say scientists by Leon Watson
Monday, October 10th 2011, 7:45 AM EDT
Co2sceptic (Site Admin)
Study measures sun's UV radiation to 'predict' seasons

First-ever 'high-resolution' scan of solar radiation

Cycle's effect on weather 'greater than first thought'

This year's low radiation makes for cold Easterly winds


It's been a lovely Indian summer - but it could come back to bite us.

That's what scientists predict after working out the first ever pattern of activity for the sun.

According to research, the sun runs on an 11-year cycle - and this affects winter weather over the northern hemisphere.
Source Link: dailymail.co.uk
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NASA: Solar Cycle Prediction (Updated 2011/04/04): Updated by Piers Corbyn
Sunday, April 10th 2011, 4:35 AM EDT
Co2sceptic (Site Admin)
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Current prediction for the next sunspot cycle maximum gives a smoothed sunspot number maximum of about 62 in July of 2013. We are currently over two years into Cycle 24.

The predicted size would make this the smallest sunspot cycle in nearly 200 years.


See also David Hatherway Solar Cycle 24 Sunspot Forecast IS Making Solar Cycle 25 Even Worse!

Click source to read FULL report from NASA

Updated below with comments about SC25 by Piers Corbyn
Source Link: solarscience.msfc.nasa.gov
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Sudden Ionospheric Disturbance, report from SpaceWeather.com
Sunday, January 1st 2012, 9:30 AM EST
Co2sceptic (Site Admin)
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On Dec. 31st, a wave of ionization swept through the high atmosphere over Europe when sunspot AR1389 unleashed another M2-class solar flare. "There was a very clear sudden ionospheric disturbance on my VLF radio instruments," reports Rob Stammes, who sends these data from the Polar Light Center in Lofoten, Norway:

"The sun is below the horizon where we are located north of the Arctic Circle," says Stammes. "This event shows we still have some contact with the sun."


Click source for more
Source Link: spaceweather.com (use 1st January 2012 when set up)
Jan-Erik Solheim, Kjell Stordahl and Ole Humlum: The long sunspot cycle 23 predicts a significant temperature decrease in cycle 24
Wednesday, March 7th 2012, 11:43 AM EST
Co2sceptic (Site Admin)
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Abstract

Relations between the length of a sunspot cycle and the average temperature in the same and the next cycle are calculated for a number of meteorologicalstations in Norway and in the North Atlantic region. No significant trend is found between the length of a cycle and the average temperature in the same cycle, but a significant negative trend is found between the length of a cycle and the temperature in the next cycle. This provides a tool to predict an average temperature decrease of at least 1.0 ◦C from solar cycle 23 to 24 for the stations and areas analyzed. We find for the Norwegian local stations investigated that 25–56% of the temperature increase the last 150 years may be attributed to the Sun. For 3 North Atlantic stations we get 63–72% solar contribution. This points to the Atlantic currents as reinforcing a solarsignal.


Click source to download PDF file, see also Solar activity and Svalbard temperatures
Source Link: he long sunspot cycle 23 predicts a significant temperature decrease in cycle 24 (PDF)
2011 Was the Year of the Restless Sun by Nola Taylor Redd, SPACE.com
Friday, December 30th 2011, 2:54 AM EST
Co2sceptic (Site Admin)
After five years of surprising quiet, the sun roared to life in 2011.

Our star erupted with numerous strong flares and waves of charged particles. Many researchers predict the surge will culminate in a peak in the sun's 11-year activity cycle in 2013.

This year also marked several key advances in scientists' understanding of the dynamics driving our favorite star. Here are some of the solar highlights of 2011:

Solar flares and CMEs

Having been relatively quiet since 2005, the sun spouted off a number of powerful flares and coronal mass ejections (CMEs) this year.

CMEs are made up of massive clouds of plasma that are sent streaking through space in any direction at several million mph. When these clouds are aimed at Earth, they can spawn geomagnetic storms that wreak havoc with GPS signals, radio communications and power grids

Click source to read FULL report from Nola Taylor Redd
Source Link: space.com
MUST LISTEN: An Interview with Frank Hill, Associate Director for the U.S. National Solar Observatory
Friday, April 13th 2012, 7:01 AM EDT
Co2sceptic (Site Admin)
Frank Hill: Future sunspot drop, but no new ice age.

Frank Hill is an astronomer at the U.S. National Solar Observatory. Last summer (June, 2011) Hill and colleagues announced their conclusions that sunspot activity might be headed for a dramatic drop in activity, beginning around the year 2019. The sun normally follows a cycle of activity lasting about 11 years. The current cycle, Cycle 24, is now heading towards its peak. Frank Hill and colleagues are looking toward the next cycle — Cycle 25. Based on data showing decades-long trends, they are suggesting its peak might be delayed or that it might not have a typical peak in activity at all. Hill spoke more about the recent sunspot study with EarthSky’s Jorge Salazar.

Frank Hill told EarthSky that — while his team did suggest a drop in solar activity beginning around 2019 — they did not suggest Earth would cool as a result.


Are you familiar with media reports that have gotten this story wrong?

Yes, actually. It seems to me that a lot of reports have come out and said that we have predicted a new ice age. That is making the leap from low sunspot activity to cooling. We did not predict a little ice age.
Source Link: earthsky.org/space
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