Saturday, May 9, 2009

Sunspots...

I've posted before about the unusually low number of sunspots we're seeing right now, and about the correlation between the number of sunspots and the overall solar radiation. It may seem a little counterintuitive, but the fact is that the sun radiates more energy when there are more sunspots, and vice versa.

Well, the low number of sunspots continues. At the moment we are experiencing the longest sustained period of low sunspot occurrence since 1928, and there's no end in sight yet. That also means we're experiencing a long and sustained reduction in solar radiation output, and therefore of its heating of the Earth. Historically periods of low sunspot activity have correlated nicely with periods of lower temperatures on the Earth, most famously with the period known as the Maunder Minimum. Naturally, the warmenists loudly proclaim that variations in sunspot activity will have no impact on the Earth's climate – they are certain that the correlations of historical low sunspot activity and low temperatures is entirely coincidental.

Looks like we may have a chance here to find out for sure. If our low sunspot activity continues for another year or so, the warmenists will have a hard time explaining a “coincidental” drop in global temperatures. Which, by the way, we're already seeing.

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