Checking the CET:  A comparison of the Hadley CET and  Philip Eden's emulated CET

against the MO England and Wales temperature series

The Hadley Centre's CET calculation has recently undergone a major change, involving the replacement of several of the

contributing stations. Their series is now based on Stonyhurst (Lancs), Pershore (Worcs) and Rothamsted (Herts), all of

which are Campbell Automatic Weather Stations.  The Philip Eden series continues to emulate Manley's original work

which calculates the mean between the Oxford district and the Lancashire Plain, and no changes have been introduced

to this series in recent months.  You can draw your own conclusions as to the efficacy of the Hadley Centre's change.