Thursday, May 28, 2009

A baby grand solar minimum?


Above: plot of Cycle 23 to 24 sunspot numbers in an 11 year window

(Update: based on comments, I’ve updated the graph above to show the 2004 solar max by sliding the view window to the left a bit compared to the previous graph. – Anthony)
A typical solar minimum lasts 485 days, based on an average of the last 10 solar minima. As of today we are at 638 spotless days in the current minimum. Also as of today, May 27th, 2009, there were no sunspots on 120 of this year’s (2009) 147 days to date (82%).

Posted via email from Garth's posterous

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