It Was the Sun Wot Did It [Andrew Stuttaford]
Cambridge astrophysicist Nigel Weiss:
"Typically, sunspots flare up and settle down in cycles of about 11 years. In the last 50 years, we haven't been living in typical times: "If you look back into the sun's past, you find that we live in a period of abnormally high solar activity," Dr. Weiss states.These hyperactive periods do not last long, "perhaps 50 to 100 years, then you get a crash," says Dr. Weiss. 'It's a boom-bust system, and I would expect a crash soon." In addition to the 11-year cycle, sunspots almost entirely "crash," or die out, every 200 years or so as solar activity diminishes. When the crash occurs, the Earth can cool dramatically. Dr. Weiss knows because these phenomenon, known as "Grand minima," have recurred over the past 10,000 years, if not longer."
Via blogger Al Fin, who adds this:
"The rush to reduce CO2 levels is not only massively expensive, but totally unnecessary, according to these learned solar experts. Certainly everyone with any knowledge should understand that global cooling is far more threatening to human life than the mild global warming currently being experienced. Politicians such as Al Gore have vested monetary interests in exaggerating the climate effects of CO2. Likewise, climatologists such as Michael Mann have achieved fame, prestige, and easy grant money through the use of shoddy research methods. The route to grant money in climate science currently lies through the gate of CAGW—catastrophic anthropogenic global warming. Those are the magic words. Reality is much larger than that. It is foolish to fixate upon one seemingly obvious explanation for cyclic climate behaviour of epochal duration. Many junkies of "global warning" enjoy the thrill of the apocalypse. Others have more mundane motivations, such as going along with the perceived flow."
Interesting.
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