KUSI – Coleman TV show discussion

E.M.Smith (Chiefio)
"....My Part

My major point has simply been that much of the available data is not used. It is dropped on the floor. You can call it “deleted” or “dropped” or “ignored” or whatever. It is still NOT in the GHCN data set. The pattern of these “droppings” is that high latitude and high altitude stations are dropped, while low altitude and low latitude stations are kept (with an ever increasing percentage at warm heat islands of airports). There is a clear ’survivor bias’ toward warmer stations (and with warming trends, like airports), with warmer winters, more heat islands, and lots of tarmac. ...."