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Sunspot Activity Will Peak Next Year ; posted: 12:34 pm ET; 15 October 1999; ... A peak in sunspot activity is expected next year, but a NASA scientist Thursday said that it may not be as intense as originally expected.
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www.space.com/science/solarsystem/sunspot_991015.html
www.space.com/science/solarsystem/sunspot_991015.html
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All this evokes the important question of how sunspots affect the Earth's climate. To answer this question, we need to know how total solar irradiance received by the Earth is affected by sunspot activity.
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www-das.uwyo.edu/~geerts/cwx/notes/chap02/sunspots.html
www-das.uwyo.edu/~geerts/cwx/notes/chap02/sunspots.html
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Sunspot number: 0 ; What is the sunspot number? Updated 30 Nov 2009; Spotless Days; Current Stretch: 8 days; 2009 total: 251 days (75%); Since 2004: ... Geomagnetic Storms: Probabilities for significant disturbances in Earth's magnetic field are given for three activity levels: active, minor storm, severe storm...
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MSFC Solar Physics Branch members Wilson, Hathaway, and Reichmann have studied the sunspot record for characteristic behavior that might help in predicting future sunspot activity. Our current predictions of solar activity for the next few years can be found at this link.
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solarscience.msfc.nasa.gov/SunspotCycle.shtml
solarscience.msfc.nasa.gov/SunspotCycle.shtml
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Charlie Perry, a research hydrologist with the U.S. Geological Survey in Lawrence, sifts through graphs of data in explaining why he believes solar activity may have greater impacts on global temperatures than previously thought. ... A sunspot, Perry explains, is a location on the sun's surface that is cooler than...
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cjonline.com/news/local/2009-09-20/earth_approaching_su...
cjonline.com/news/local/2009-09-20/earth_approaching_sunspot_records
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The sun now is on the upswing of its 23rd activity cycle, a numbering scheme that dates from the mid-19th century, although the sunspot cycle may have lasted as long as the sun has burned. The "relative sunspot number" was introduced by Rudolf Wolf of the Zurich Observatory in 1848.
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science.nasa.gov/newhome/headlines/ast19oct98_1.htm
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Today's sunspot number is; 27 ; ... Solar activity undulates on an 11 year cycle. At the "solar maximum" there are more solar flares, more sunspots, more sun quakes, more of everything that solar physicists love to study. But the solar cycle is not just for academics -- it affects everyday life on Earth,
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www.spaceweather.com/java/sunspot.html
www.spaceweather.com/java/sunspot.html
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History and images of sunspots. ... The "ACTIVITY" section contains a Java application in which you can record the number of sunspots present in both visible light and x-ray images. ... To see the latest sunspot activity, ttake a quick look at today's solar images from the Yokoh and SOHO spacecraft...
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www.exploratorium.edu/sunspots/
www.exploratorium.edu/sunspots/
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Sunspot - Wikipedia, the free encyclopedia
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A sunspot is an area on the Sun's surface (photosphere) that is marked by intense magnetic activity, which inhibits convection, forming areas of reduced surface temperature. They can be visible from...
en.wikipedia.org/wiki/Sunspot
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