This global study at the European Institute for Climate and Energy (EIKE) – How Natural is the Recent Centennial Warming? – is the first that jumps to mind in over two decades by a group sceptical of AGW – that applies statistical analysis to thousands of temperature station data and concludes there is a standout UHI signal.
Andrew Bolt has an article on this – “Climate study: er, what man-made warming?”
I just hope this is the start of a determined research effort that might in the years ahead blunt the harm done to science by over two decades of the UHI infested various CRUTem versions.
Have the EIKE team quantified an increase in century long temperature trend with altitude ? So does this mean that the NASA AMSU lower troposphere satellite data (from approx 14,000ft) compiled by Spencer & Christy at the University of Alabama at Huntsville – needs to be tweaked to a sl cooler trend to approximate the surface ? I wonder what is the expert opinion on this – what do weather balloon data show ?