The biggest changes in temperature (“divergence” in dark red brown Fig 6) occurred where the most people lived (blue dots). In the 60 years to 2010 China was reported to have warmed by 0.79 ± 0.10 °C. However Scafetta et al calculate at most, China could have experienced a real warming of only 0.46 ± 0.13 °C.
Somehow the combined might and supercomputers at NOAA, NASA, Hadley and the Bureau of Met experts all missed this.
It’s another third of a degree gone from the Glorious CO2 Narrative. Just like that.
Is there a more perfect nation to study the Urban Heat Island effect than China?
The worlds most populous nation has made a blistering transformation in two decades. As recently as 1995 the population was 75% rural. Now it’s approaching 60% urban. Shenzhen, which is near Hong Kong, grew from 3000 people in 1950 to more than 10 million in 2010. Around Beijing, thousands of towns have been built in a networked carpet, each a mere 2km apart (zoom in on Google satellite view). The stations in these areas are effectively not rural anymore.
Prof Nicola Scafetta and Shenghui Ouyang wondered how this massive growth affected the temperatures. They discovered the regions that warmed the fastest were also the largest population centers. Proving the warming might be “man-made” but nearly half the warming is due to heated concrete and all the assorted infrastructure and industry around thermometers. That part is not CO2.
There would be more CO2 produced from those population centres too, but we all know that given five minutes CO2 will split for Tahiti or Siberia, or anywhere. In any case, Scaffeta et al compared what the top greenhouse models driven by CO2 predicted. And lo, the models were totally wrong. The CMIP5 set projected that CO2 would warm all of China roughly equally.
The research duo looked at the minima, the maxima, the seasonal and monthly patterns, and in pretty much every case, the warmth follows the same pattern we’d expect if it was caused by human industry. The minimums rose more than the maximums. The biggest warming effect comes in the coolest part of the day and in the coolest half of the year — and it’s a toss up whether China has even warmed at all since 1940. The nights are hotter, but the days are colder than they used to be — inasmuch as anyone has any idea at all what the temperature would really have been.
The Climate models (CMIP5) have barely any ability to predict future maxima and minima…
Compare the models to the measurements:
And notice how hot China was in the daytime in 1940? I don’t see how that can last.Presumably China in the 1940’s will start cooling soon like most other places in the world have.
The population doubled, doubled, and doubled again
Beijing that increased from 1.7 million in 1950 to 18.4 million in 2015. It grew by about 11 times in 65 years.