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Latest Solar cycle Stories

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2009-10-28 06:15:00

Every 11 years, the sun undergoes a furious upheaval. Dark sunspots burst forth from beneath the sun's surface. Explosions as powerful as a billion atomic bombs spark intense flares of high-energy radiation. Clouds of gas big enough to swallow planets break away from the sun and billow into space. It's a flamboyant display of stellar power. So why can't we see any of it? Almost none of the drama of Solar Maximum is visible to the human eye. Look at the sun in the noontime sky...

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2009-09-17 09:21:46

Challenging conventional wisdom, new research finds that the number of sunspots provides an incomplete measure of changes in the Sun's impact on Earth over the course of the 11-year solar cycle. The study, led by scientists at the National Center for Atmospheric Research (NCAR) and the University of Michigan, finds that Earth was bombarded last year with high levels of solar energy at a time when the Sun was in an unusually quiet phase and sunspots had virtually disappeared. "The Sun...

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2009-09-03 15:14:15

The sun is in the pits of the deepest solar minimum in nearly a century. Weeks and sometimes whole months go by without even a single tiny sunspot. The quiet has dragged out for more than two years, prompting some observers to wonder, are sunspots disappearing? "Personally, I'm betting that sunspots are coming back," says researcher Matt Penn of the National Solar Observatory (NSO) in Tucson, Arizona. But, he allows, "there is some evidence that they won't." Penn's colleague Bill Livingston...

3b7fa2a2e5015f2b0ec8bbe129c0a6931
2009-08-28 14:45:00

Researchers from NCAR have created the first-ever model to simulate the impact of the sun's radiation fluctuations on the earth's climate. Scientists have long known that the sun does not radiate evenly. The best known example of radiation fluctuations is the famous 11-year cycle of sun spots. But experts have previously been unable to create a model that would depict how uneven radiation would impact the earth's climate. "Small changes in the sun's output over the 11-year solar cycle have...

cc19b08a2fee9ebfc10a2c631efbfb941
2009-08-27 15:00:00

Subtle connections between the 11-year-solar cycle, the stratosphere and the tropical Pacific Ocean work in sync to generate periodic weather patterns that affect much of the globe, according to research results appearing this week in the journal Science. The findings will help scientists get an edge on predicting the intensity of certain climate phenomena, such as the Indian monsoon and tropical Pacific rainfall, years in advance. "It's been long known that weather patterns are...

ce383f5c380d2c139cba7e3a7191b0771
2009-07-16 11:35:00

Establishing a key link between the solar cycle and global climate, research led by scientists at the National Science Foundation (NSF)-funded National Center for Atmospheric Research (NCAR) in Boulder, Colo., shows that maximum solar activity and its aftermath have impacts on Earth that resemble La Niña and El Niño events in the tropical Pacific Ocean.The research may pave the way toward predictions of temperature and precipitation patterns at...

2009-07-06 23:34:44

Cooler than average weather patterns in the U.S. northeast, attributed to the solar cycle, will likely persist for the rest of the summer, forecasters said. There will be spikes of summer weather, AccuWeather.com reported Monday, but weather patterns that have prevailed so far will probably last. This year represents a low point for sunspots, NASA said. Studies indicate the lower the sunspots, the less bright the sun, which could translate to less heating of Earth, although many other factors...

a0a2b9d1f5dce3ad01ffb096f22bfda71
2009-06-18 15:00:00

First model of entire sunspots shows striking, beautiful detail In a breakthrough that will help scientists unlock mysteries of the sun and its impacts on Earth, scientists have created the first-ever comprehensive computer model of sunspots. The resulting visuals capture both scientific detail and remarkable beauty. The results are published this week in a paper in Science Express. The research was supported by the National Science Foundation (NSF). The high-resolution simulations of...

4dfe7e65d3f6a9ad1b957217a46d51d91
2009-06-17 15:35:00

The sun is in the pits of a century-class solar minimum, and sunspots have been puzzlingly scarce for more than two years. Now, for the first time, solar physicists might understand why.At an American Astronomical Society press conference today in Boulder, Colorado, researchers announced that a jet stream deep inside the sun is migrating slower than usual through the star's interior, giving rise to the current lack of sunspots.Rachel Howe and Frank Hill of the National Solar Observatory (NSO)...

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2009-05-29 16:25:00

An international panel of experts led by NOAA and sponsored by NASA has released a new prediction for the next solar cycle. Solar Cycle 24 will peak, they say, in May 2013 with a below-average number of sunspots. "If our prediction is correct, Solar Cycle 24 will have a peak sunspot number of 90, the lowest of any cycle since 1928 when Solar Cycle 16 peaked at 78," says panel chairman Doug Biesecker of the NOAA Space Weather Prediction Center. "Even a below-average cycle is capable of...


Latest Solar cycle Reference Libraries

How Solar Cycles Impact Our Weather Here On Earth
2013-01-13 09:10:34

Solar cycles: what are they and why should we care about them? Solar cycles are made up of what are known as solar minimums (min) and solar maximums (max). We refer to a solar min at the time when the sun is not active with many sunspots, while a solar max is just the opposite when we see a large increase in sunspot activity. So how long do solar cycles last? Typically they run on what is known as an 11 year cycle from the max to the min and then start over again anew. As of 2012 we...

4_641fa07d2f22a90aec48fb5581337d772
2004-10-19 04:45:41

Solar Maximum -- The Sun, a roiling ball of plasma, occupies its place in space approximately 93 million miles from Earth. Though it seems simple to inhabitants of this planet -- the Sun shines, giving light and heat -- the processes occurring in the Sun are so complex that many scientists devote their careers to just one aspect of solar activity. Changes in the activity of the Sun particularly engage solar scientists. Whether fluctuations in the solar magnetic field, expulsions of...

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Word of the Day
penuche
  • A fudgelike confection of brown sugar, cream or milk, and chopped nuts.
'Penuche' is a variant of 'panocha,' a coarse grade of sugar made in Mexico. 'Panocha' probably comes from the Spanish 'panoja, panocha,' ear of grain.
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