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January 29, 2012 / George

Five shots against global warming denialism

From Phil Plait:

1 Last week, I posted the results from studies showing 2011 was the 9th hottest year on record. Forbes online has more information on this. They take a different tack on it, but get the same results I do: the Earth is warming up, and humans are why.

2 Some very welcome news: the National Center for Science Education — who for years have been at the forefront of battling creationists getting their “curriculum” into schools — is adding climate change to their syllabus. At that link they have well-written descriptions of the problem, how to teach about climate change, and how take action against denialism.

via Five shots against global warming denialism | Bad Astronomy | Discover Magazine.

Nine of the ten hottest years on record have been since 2000.

The map below shows changes from average (where the average is from 1951 to 1980). You see clearly that temperatures over land have increased almost universally. Most of the ocean temperatures have gone up as well; the one big cooler region in the eastern Pacific is due to the La Niña last year, so it’s a temporary effect. Even with La Niña dropping temperatures, the overall effect is an increase in temperature. I’ll note that sunspot numbers were low last year as well, which (if anything) should result in a (very) slight cooling effect too.

Five shots against global warming denialism | Bad Astronomy | Discover Magazine

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