Monday, December 20, 2010
It's the sun stupid! Decrease in sunspots causes earth's temperature to fall...
The sun went spotless yesterday, the first time in quite awhile. It seems like a good time to present this analysis from my friend David Archibald. For those not familiar with the Dalton Minimum, here’s some background info from Wiki:
The Dalton Minimum was a period of low solar activity, named after the English meteorologist John Dalton, lasting from about 1790 to 1830. Like the Maunder Minimum and Spörer Minimum, the Dalton Minimum coincided with a period of lower-than-average global temperatures. The Oberlach Station in Germany, for example, experienced a 2.0°C decline over 20 years. The Year Without a Summer, in 1816, also occurred during the Dalton Minimum. Solar cycles 5 and 6, as shown below, were greatly reduced in amplitude.