From the graphs in the article it looks like they show about ten cycles per year, but that could be driven by the sampling rate. So this is week to week changes rather than year to year.
For the Earth, the relation between small changes in solar brightness and temperature is about 1%=0.7°C. Reference: http://www.astronomynotes.com/solarsys/s3c.htm. Temperature is proportional to the 4th root of solar luminosity, so changing from 1.00 to 1.01 times the normal amount results in a factor of 1.0025. Multiply by the Earth's average temperature of 288K (15°C) and you get 288.7K (15.7°C)
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