Speak loudly and carry a busted hockey stick

Watts Up With That?

by Walter Starck (in Quadrant Online)


The average temperature for the Earth, or any region or even any specific place is very difficult to determine with any accuracy.  At any given time surface air temperatures around the world range over about 100°C. Even in the same place they can vary by nearly that much seasonally and as much as 30°C or more in a day. Weather stations are relatively few and located very irregularly. Well maintained stations with good records going back a century or more can be counted on one’s fingers. Even then only maximum and minimum temperatures or ones at a few particular times of day are usually available.  Maintenance, siting, and surrounding land use also all have influences on the temperatures recorded.


The purported 0.7°C of average global warming over the past century is highly uncertain. It is in fact less than the margin of error in…

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