How accurate are the grids?
An indication of the quality and accuracy of the grid values is given by the root-mean-square Errors (RMSE) at verification stations. For the daily grids, the RMSE values averaged over each day of a test year are as follows: Climate variable Verification RMSE Rainfall amount 1.23 mm Mean temperature 0.94 °C Maximum temperature 1.06 °C Minimum temperature 1.27 °C For the monthly grids, the average RMSE values for 12 test months are as follows: Climate variable Verification RMSE Rainfall amount 16 mm Mean temperature 0.36 °C Maximum temperature 0.66 °C Minimum temperature 0.45 °C RMSE values for monthly grids of other climate variables and for annual grids are given in the paper ‘Generation of monthly gridded data sets for a range of climatic variables over the UK’ (PDF, 590 kb). All the monthly and annual values are given with a precision of two decimal places and the daily values are given with a precision of one decimal place. This is to facilitate onward calculation and is not a refl
