Steerpike
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- Dec 17, 2007
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And in that same time period, the total irradiance of the sun has not increased, in fact it has decreased an insignificant amount.
This is unsettled due in part to different methods of measuring, leading to inconsistent data. There is some argument over this in the primary literature, with some scientists maintaining an increase in total irradiance over about a 10 year period from 1986 to 1996, and then the beginnings of a decrease. Others disagree. The variation seems to be around 11 years, which is half of the sun's magnetic cycle.