And even in that article it states:

"If you use only the sites that currently have good siting versus those that have not-so-good siting, when you look at the adjusted data basically you get the same trend," said Jay Lawrimore, chief of the climate monitoring branch at NCDC.

Lawrimore admitted that Watts' volunteers had discovered real problems with sensor siting, but he said that even when those sites' heat readings were adjusted down, they still showed a steady overall rise in temperatures.

"The ultimate conclusion, the bottom line is that there really isn't evidence that the trends have a bias based on the current siting," he said.

And surface station data is only a small subset of information confirming the warming of the climate, Lawrimore said.