Puerto Casado is a small town along the border of Paraguay whose temperature history became a topic on Christopher Booker’s column in the Telegraph. Booker showed how a raw cooling trend had metamorphosed into its opposite after ‘adjustments’. This was contested quickly by climate scientist Ed Hawkins who pointed to the town’s record on BEST. It indicated the station had been moved.
Perhaps the Puerto Casado station had been shifted to a cooler location… introducing a false cooling trend? The natural question to ask is – how does BEST know a rural station in the remote reaches of South America moved twice? Where does it get this information?
The answer, it turns out, is an entangled mess. The Puerto Casado record in BEST includes metadata from various sources. Metadata is what…
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