USA48

A favorite tactic of those who deny global warming is to exagerate the importance of the temperature record of the contiguous United States (the lower 48 states of the continental USA). It’s only 1.6% of the surface area of the planet, so it’s not truly representative of the globe as a whole. But what the heck, it is part of planet earth, so it’s interesting to examine the temperature history of the contiguous U.S., aka the “lower 48 states,” aka “USA48.”

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