I have a book in my library entitled “Weatherwise – England’s weather through the past thirty years‘ by John H Willis and published in 1944. John Willis who died in 1962, kept faithful records of temperature, sunshine and rainfall for many years and took photographs of trees on the same day each year. Strangely his work on phenology, which has been largely forgotten these days, came to a similar conclusion as this joint study between the Met Office and Woodland Trust did. I don’t think somehow that these results will come as any great surprise to people who love the weather and the countryside.
This is a graph and table (figs 2 & 3) from a study that I did myself using daily CET data earlier this year, to see just how much earlier the first day of spring was occurring in 2017 than it was in 1772. I reckon that the first day of spring now occurs three weeks earlier than it did in 1772 in Central England.