Professor Phil Jones, of UEA’s Climatic Research Unit, tells us: “This year sees the highest average temperature recorded since the Central England Temperature series began in 1659, and the rise above the average is significantly higher than that for the two hottest years we have experienced.”

Although the thermometer was invented near the start of the C17th (probably by Galileo), my query is, what did they measure in 1659? Gabriel Fahrenheit wasn’t born until 1684 and René Réaumur in 1683 so those scales hadn’t been invented. Presumably the results were written down somewhere and can now be converted into modern units. The results are noted on the Met Office site but it doesn’t say how it was done.

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