The airport at Canberra shows 1.3C/century warming since 1955, while the airport at Broome shows no warming during the same period.
The Broome thermometer is a well sited thermometer, far away from any asphalt.
By contrast, the Canberra thermometer is located next to a huge mass of asphalt and concrete. Experts at the BOM say that the warming is due to 0.0001 mole fraction CO2 added to the atmosphere over the past 100 years.
Good find. Wonder if Mark is as aware of his own B$ ?