There are serious problems with all the current measurements from surface stations to satellites, but a major one is the contamination of the surface readings by changes in the physical conditions around the weather station. This article looks at one contentious issue and serious concern with the surface record known as the Urban Heat Island Effect (UHIE).
Tagged: global warming
The certainty with which the IPCC and AGW proponents make their claims leads to a demand for action. They have denied doubt: the science is settled, the debate is over so we must act. In fact, there is considerable doubt, so it is far wiser to do nothing.