Thank you!  The context was confusing, probably all the more so from it being a 
Russian site.

From: a.ashfield [mailto:[email protected]]
Sent: Monday, July 13, 2015 9:55 AM
To: [email protected]
Subject: RE: [Vo]:good by global warming

Chris,

"solar activity will fall by 60 per cent'
That is largely referring to the number of sun spots.  The radiation at most 
frequencies changes only a little.

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