Does global warming increase the surface temperature of all parts of the Earth by equal amounts?
No, it only means that the AVERAGE temperature on earth raises and that not just on a single day, but for a long enough interval of time – the global average temperature for one year is good enough for the basic stuff, but the real important work starts with the ten year average. You can even have regions that cool down. And hammster belongs to those many people, who don’t know Mikes trick, but think it means changing the temperature data by adding something to the temperature values. Like Fox news writers – who are not journalists and especially not able to read in the Internet about what “Mike’s trick” is – adding the really measured and accurate temperature plot to temperatures reconstructed from tree ring data. It is not fraud – it just makes no sense to use inaccurate reconstructions (see the error bar range for such reconstructions), if you have direct accurate measurements. It is like using your fuel indicator in your car for measuring the traveled distance, if you can use the t
