Many workers, (Steve Goddard, Tony Brown are the two that spring most readily to mind) have done great
work in exposing just what a
shoddy job has been made of
producing the historical datasets on which all of climatology relies.
The result, as the BBC says, «a graph remarkably similar to those
produced by the world's three most important and established groups [NOAA, NASA, and the Met Office and Climatic Research Unit],
work had been decried as unreliable and
shoddy in climate skeptic circles.»