Great point on another regional impact.
UHI is yet another regional impact that is understated and cannot be adjusted for by the data manipulation techniques frequently used by climate scientists.
One global warming report after another talks about discarding LOW temperature anomalies, but never taking out high temperature anomalies. Why?
There is one local government sensor that weatherman ignore because it is never right.
It is located on the south face of a building near an exhaust vent for the heating system. If the wind blows the right way on the coldest winter days it can read as high as 70 degrees F.
The appropriate authorities have been repeatedly contacted, but it has not been relocated. It has become a running joke. For a laugh in mid winter reporters will tell people to go to X because it is a balmy 65 today.