EarthFiles Episode 46  
   
 

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Episode 46 - Longest Solar Minimum Since 1913

 
 

Sat, April 08, 2009

Longest Solar Minimum Since 1913


Out of 365 days in 2008, 266 were without sunspots. So far in 2009, January had 25 sunspot free days; February had 23 sun spot free days; and March had 28 sun spot free days. Solar Cycle 23 began in a May 1996 minimum, so by April 2009, it's been thirteen years between minimums and still no increasing sunspots. The last time a solar cycle has gone thirteen years between minimums was Solar Cycle 15 in 1902 to 1913.

 
 
 
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