From NOT A LOT OF PEOPLE KNOW THAT

By Paul Homewood

h/t Ray Sanders

Among the top temperatures recorded om 19th July last year was 39.9C at Cambridge Botanical Gardens, which had set the UK record back in 2019. I looked at the siting of the weather station there,and there were plainly reasons to believe that the site was too compromised to be used for climatological purposes – see here.

Quite apart from the local siting issues however was the fact that the Gardens had been gradually surrounded over the years by urbanisation, which must have artificially increased temperature trends.

But as Roy points out, this is not a just a recent issue, as the station was taken out of the CET index in 1931, precisely because it was already exhibiting “evidence of urban warming”!

Cambridge of the 1930s was of course a much different place to today! If there was already urban warming then, just think how much greater it is now.

https://www.cambridgehistorian.co.uk/photographs/cambridge-1930s?ep%5B88116213%5D%5Bpage%5D=0