The K7RA Solar Update (Mar 23, 2007)

For the past 10 days we’ve observed no sunspots at all! Periods like this — or longer – are expected at the bottom of the sunspot cycle. As mentioned in a recent “Solar Update,” the latest projection for smoothed sunspot numbers from the NOAA Space Environment Center puts the solar minimum at February through April 2007, with a smoothed sunspot number of 11. You can see the table on page 10 of the Preliminary Report and Forecast. Another way to look at it is that the minimum is projected between December 2006 and July 2007, with a smoothed sunspot number of 12 or lower.

http://www.arrl.org/news/stories/2007/03/23/100/?nc=1

This entry was posted on March 26, 2007 at 11:30 am and is filed under K7RA Solar Update, ARRL Web Extra. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.