It is important to understand that global warming has been measured in tenths of degrees, .77 degrees Celsius in the past 100 years. There has been a great deal of controversy about the accuracy of the temperature data, mainly the bias of temperature data due to urban heat island effect. This controversy has lead many to focus on rural temperature stations. Rural stations are intended to represent the cool breezy countryside, small towns, farms, trees and grass.
In recent weeks, researchers have been visiting these temperature stations. What they noticed was that there are serious problems with the quality of these temperature stations. They noticed that many of these temperature stations were located next to concrete buildings, near hot exhausts of air conditioning units, attached to metal towers and poles, surrounded by driveways and above gravel.