re: #624 Shr_Nfr

A large number of ground stations are heavily corrupted by being sited in heat islands. My favorite is in Italy. Right behind a jet airstrip where there is jet engine exhaust washing over it and where it has a paved parking lot on the other side. Watt’s up with that has been doing a survey of the surface stations, He has found some very, very poor station siting. Once upon a time, it was reasonable to put them there. It no longer is. NOAA just announced that according to their surface data, May was the 4th hottest in 130 years. Remote sensing from the MSU gives it as the 15th coolest n 31 years. Somebody is wrong. Knowing the station sitings as I do, I am betting on the stations. In fact, I no longer consider them reliable data sources.

I’ve seen that argument, and there is some credence to how it skewed the data and gave the alarmists ammo, but the satellite data supports the average overnight being warmer too.