Who keeps changing the thermostat?
Posted by aogSunday, 08 June 2003 at 09:25 TrackBack Ping URL
I missed the discussion on climate change over at the Brothers Judd. Despite the efforts of the Evil Canadians it's starting to warm up around here. However, it should be noted that while it's been unseasonably cold in the US there's been a heat wave in India that has killed hundreds of people. The entire issue is clouded by the fact that we've only had records of any sort for 300 years (which is a short time in climate change) and that the planet is still recovering from the Little Ice Age. The latter should cause us to expect warming even absent human activity.

The only good prediction I've seen was one from the late 70's. It claimed that the early part of the century, particularly the 40's through 60's, were a period of unusually benign weather and that we should expect far more variable weather in the future. That certainly seems to have panned out, with record hot years followed by record cold years.

P.S. I love the bit at the end of the Little Ice Age article where it is stated, with no supporting evidence, that

"The period of low solar activity in the middle ages led to atmospheric changes that seem to have brought on the Little Ice Age. However, we need to keep in mind that variations in solar output have had far less impact on the Earth's recent climate than human actions," Shindell said. "The biggest catalyst for climate change today are greenhouse gases," he added.
That's ideology, not science.