Politifact fact-checked the claim that temperature measurements are fabricated: http://www.politifact.com/punditfact/statements/2015/feb/13/dana-perino/fox-news-host-climate-scientists-fabricated-temper/
remember politifact and pundifact are sponsored by the Ford Foundation and the Democracy project which are left leaning organizations to say the least. So you can take their conclusions with a large grain of salt.
I worked in airports for many years. I saw them move the sensor housings from the grassy fields to the tarmacs. My peers saw the same thing in other airports.
PolitiFact bias: Does the GOP tell nine times more lies than left? Really?
I have seen the TB Times outright lie to get the right ‘rating’.