[CQ-Contest] The first indicators that Solar Cycle 25 may be similar in amplitude to Cycle 24

donovanf at starpower.net donovanf at starpower.net
Tue Sep 8 15:00:44 EDT 2015


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73 
Frank 
W3LPL 

----- Original Message -----

From: donovanf at starpower.net 
To: "PVRC" <pvrc at mailman.qth.net>, cq-contest at contesting.com, topband at contesting.com 
Sent: Tuesday, September 8, 2015 6:41:14 PM 
Subject: The first indicators that Solar Cycle 25 may be similar in amplitude to Cycle 24 



Until mid-2014 Solar Cycle 24 was remarkably quiet. Despite the 
steadily declining solar flux since mid-2014, the Sun’s large-scale 
magnetic field suddenly strengthened late in 2014 reaching its 
highest value in more than twenty years . Using these and related 
observations, two Naval Research Laboratory researchers, Wang 
and Sheehy, predict in their August 2015 article in The Astrophysical 
Journal that Solar Cycle 25 may reach an amplitude similar to Solar 
Cycle 24. 


Until the unexpectedly sudden and strong increase in the Sun’s large- 
scale magnetic field, some solar scientists feared that S olar Cycle 25 
might achieve a much lower amplitude than Cycle 24. Those fears 
might now be put to rest. 

http://aasnova.org/2015/09/02/witnessing-solar-rejuvenation 


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