Solar Cycle 24 Begins |
Solar Cycle 24 Begins |
Guest_Sunspot_* |
Jan 4 2008, 07:45 PM
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Latest from spaceweather.com
SOLAR CYCLE 24: Solar physicists have been waiting for the appearance of a reversed-polarity sunspot to signal the start of the next solar cycle. The wait is over. A magnetically reversed, high-latitude sunspot emerged today: image. If you have a solar telescope, take a look at this important new active region. It marks the beginning of Solar Cycle 24 and the sun's slow ascent back to Solar Maximum. Magnetic Image Visible Light Image |
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Dec 31 2010, 11:06 PM
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Member Group: Members Posts: 808 Joined: 10-October 06 From: Maynard Mass USA Member No.: 1241 |
Gsnorgathon is just about right.
Here is the email reply from NWRA: ....As indicated in the text on the referenced web page, the parameter in question is an effective sunspot number, not an observed sunspot number. It is more an index of the state of the ionosphere than of the sun, although it does have a solar component. A negative value simply indicates that the ionosphere is in a less-dense state than one would expect for SSN=0. A more detailed explanation can be found in the link "24hr SSNe" above the plot on the page you reference.... -------------------- CLA CLL
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