HadCRUT5 shows 14% more global warming since 1850 than HadCRUT4

They’re at it again. The old lady of temperature datasets – HadCRUT, the only global dataset to reach back to 1850 – has released its revised monthly global mean surface temperature anomalies for 1850-2020. The earlier dataset (HadCRUT4) showed a least-squares linear-regression trend of 0.91 K on the monthly anomalies from 1850-2020 – only just over half a degree per century equivalent.

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