Friday, September 19, 2008

I Predict That Climate Will Change

Because it always has in the past. Here's a look at temperature from the last 2000 years. (You can download the entire study here.)

Global Temp Reconstruction

The data in this chart ends in 1995, just prior to the current 10-year cooling-off period we've experienced. Each data point is a 30 year average.

The green crowd loves to tell you that the last years of the 20th century, there was a temperature increase of "historic proportions." Yes, it marked the end of "Little Ice Age." (Which I think ended in 1940, but I can't find that reference.)

Here's another look at that data. It has a few historical dates penciled in.
Global Temp Reconstruction annotated

My personal favorite is the Viking colonization of Greenland, so-named because when they found it they put farms on it. Today it is a sheet of ice. People take things for granted, but the chimney really only entered everyday life in Europe in the 12th century. While it was cold before that, prior to Little Ice Age, when it was starting to get cold.

I don't know whether things will get warmer or colder. The only thing I am reasonably sure of is that they won't stay the same. It has been both warmer and cooler than it has been in the past 700 years or so. Is that a good thing, or a bad thing, or just a thing?

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