It pains me that some of my tax dollars get spent on this BS.
Really IPCC? What made it so hot last time 2000 years ago? Funny how you never ask that simple question, isn't it? Interestingly, the '2000 year' figure leaves out the Roman Warming, a period of 500 years that were 3C-4C warmer than it is right now.
“Figgurs can lie, and liars can figgur.” As my Momma used to say.
The corrupt application of science to this number diddling is typical of folk involved. It is applied widely to anything they want. Emphasis “WANT”.
It is the same type of practice applied when thugs like BLM say that coppers hunt down blacks in the street.
With the widespread adoption of thermistors, electronic measurement of temperature and recording thermometers, the game changed. A hundred years ago a thermometer was read manually once or twice a day, and some were capable of recording the day’s high and low. Averages were computed by simple arithmetic from the daily readings. With continuous recording, the means of calculating changed. not necessarily for nefarious reasons, but that doesn’t really matter. With a continuous recording, the average is computed by integrating the area under the temperature trace (calculating the area under the plotted temperatures) and dividing by the length of the average time period (day, week, etc.). It made it easier.
But weather stations tended to sprout up at places like airports or in cities, or growth of cities took place around older weather stations, putting many of them inside “heat islands”. Some have even been documented to be on hot rooftops, or located near the exhausts of A/C and refrigeration systems. And every hot wisp of air that passes by is included in the automatic calculation.
Or these bloated bureaucrat bastards are simply lying.