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Climate change temporarily wrong? October 23, 2009

Posted by fetzthechemist in Uncategorized.
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This year has been unusually cool in norther California. In the San Francisco Bay Area where I live, you usually get about 3 or 4 weeks of hot weather, 90 degrees F or higher. These are scattered throughout the months from May through early September in 2, 4, 4, or 5 day clusters. The weather alternates between those and much cooler ones. This year there were maybe 10 hot days.

In September the weather changes. The fog from the Pacific stops coming in shore and there are long stretches of hot days, maybe for weeks on end. This hot period usually lasts through the middle of October and often even later. But this year, this “Indian summer” was nonexistant, maybe we had two days, so it seemed like a regular warm period. But now the days are cool and there have been rainstorms. This is the November/ December pattern.

When I was in Charleston at the ISPAC conference, I heard similar stories from Canadians and Europeans. Could this be a global cool year? Are the climate forecast at least temporarily off? Maybe so. I wonder if the models did not account for the temporary influx of coler icemelt water as the polar caps thaw.

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