Solar Cycle 25 Blog

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Great ball of fire! Video reveals explosive magnetic power of the Sun
Thursday, October 15th 2009, 6:40 AM EDT
Co2sceptic (Site Admin)
Dramatic eruptions on the Sun have been captured in rare footage by two Nasa spacecraft.

Filmed over two days, the images show large glowing clouds of gas bursting from the Sun's surface and held aloft by the star's twisted magnetic fields.

These huge solar prominences are several times larger than the Earth and are caused by the solar activity cycle. It is one of the most spectacular events that the twin STEREO (Solar TErrestrial RElations Observatory) craft have observed.

Seen against the brilliant solar surface in visible light, they appear as dark filaments because they are relatively cool compared with the Sun's core. But they are bright themselves when viewed against the blackness of space.
Source Link: dailymail.co.uk
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Solar cycle affecting global climate, say scientist
Friday, July 17th 2009, 5:31 AM EDT
Co2sceptic (Site Admin)
Research led by scientists at the National Science Foundation-funded National Center for Atmospheric Research (NCAR) in Boulder, Colorado, has shown that maximum solar activity and its aftermath have impacts on Earth similar to that caused by ocean currents La Niña and El Niño in the tropical Pacific Ocean.

The research, while establishing a key link between the solar cycle and global climate, may pave the way toward predictions of temperature and precipitation patterns at certain times during the approximately 11-year solar cycle.

"These results are striking in that they point to a scientifically feasible series of events that link the 11-year solar cycle with ENSO, the tropical Pacific phenomenon that so strongly influences climate variability around the world," said Jay Fein, program director in NSF's Division of Atmospheric Sciences. "The next step is to confirm or dispute these intriguing model results with observational data analyses and targeted new observations," he added.
Source Link: domain-b.com
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Solar Winds Triggered By Magnetic Fields
Thursday, November 5th 2009, 4:37 AM EST
Co2sceptic (Site Admin)
Solar wind generated by the sun is probably driven by a process involving powerful magnetic fields, according to a new study led by UCL researchers based on the latest observations from the Hinode satellite.

Scientists have long speculated on the source of solar winds. The Extreme Ultraviolet Imaging Spectrometer (EIS), on board the Japanese-UK-US Hinode satellite, is now generating unprecedented observations enabling scientists to provide a new perspective on the 50-year old question of how solar wind is driven.

The collaborative study, published in this month's issue of Astrophysical Journal, suggests that a process called slipping reconnection may drive these winds

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Source Link: spacedaily.com
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World's climate could cool first, warm later by Fred Pearce
Saturday, September 5th 2009, 12:40 PM EDT
Co2sceptic (Site Admin)
Forecasts of climate change are about to go seriously out of kilter. One of the world's top climate modellers said Thursday we could be about to enter "one or even two decades during which temperatures cool. People will say this is global warming disappearing," he told more than 1500 of the world's top climate scientists gathering in Geneva at the UN's World Climate Conference.

"I am not one of the sceptics," insisted Mojib Latif of the Leibniz Institute of Marine Sciences at Kiel University, Germany. "However, we have to ask the nasty questions ourselves or other people will do it."

Few climate scientists go as far as Latif, an author for the Intergovernmental Panel on Climate Change. But more and more agree that the short-term prognosis for climate change is much less certain than once thought.

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Source Link: newscientist.com
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