A case for the urban heat island effect and flawed surface temperature measurements!
There is a strong suspicion here again that we are dealing with pseudo science produced by Columbia University and published in the prestigious PNAS!
This study might very well be another example of climate models being junk!
Keep in mind: Global warming is a hoax and climate change is a religion! It is being used as a pretext by Big Government and the elite to interfere with our lives. It is among the greatest scams and scandals of at least the last 30 years!
Is it not curious that most of these mapped hotspots coincide with centers of urbanization and areas of dense population around the world! A strong indication that actually the urban heat island effect is in effect!
Just look at Europe and Australia and Chile. Take in particular the very thinly populated continent of Australia, where these so called hotspots happen to coincide with Sidney, Melbourne, Canberra, and Adelaide, the major urban centers of Australia. Then we have Chile. Again the map below shows the so called hotspots are located where the major urban centers (Santiago, Valparaiso, Concepcion) are of Chile!
The map below also shows so called hotspots in the very northern and thinly populated regions of Canada. I strongly suspect flawed or even non existent historical surface temperature measurements. Similar the huge island of Greenland.
"New research has identified several regions of the globe where heatwaves are increasing at a rate far higher than state-of-the-art climate models have been projecting. ..."
From the significance and abstract:
"Significance
Heatwaves can lead to considerable impacts on societal and natural systems. Accurate simulation of their response to warming is important for adaptation to potential climate futures. Here, we quantify changes of extreme temperatures worldwide over recent decades. We find an emergence of hotspots where the hottest temperatures are warming significantly faster than more moderate temperatures. In these regions, trends are largely underestimated in climate model simulations. Globally aggregated, we find that models struggle with both ends of the trend distribution, with positive trends being underestimated most, while moderate trends are well reproduced. Our findings highlight the need to better understand and model extreme heat and to rapidly mitigate greenhouse gas emissions to avoid further harm.
Abstract
Multiple recent record-shattering weather events raise questions about the adequacy of climate models to effectively predict and prepare for unprecedented climate impacts on human life, infrastructure, and ecosystems. Here, we show that extreme heat in several regions globally is increasing significantly and faster in magnitude than what state-of-the-art climate models have predicted under present warming even after accounting for their regional summer background warming. Across all global land area, models underestimate positive trends exceeding 0.5 °C per decade in widening of the upper tail of extreme surface temperature distributions by a factor of four compared to reanalysis data and exhibit a lower fraction of significantly increasing trends overall. To a lesser degree, models also underestimate observed strong trends of contraction of the upper tails in some areas, while moderate trends are well reproduced in a global perspective. Our results highlight the need to better understand and model the drivers of extreme heat and to rapidly mitigate greenhouse gas emissions [???] to avoid further harm from unexpected weather events."
Unexplained [???] Heat-Wave ‘Hotspots’ Are Popping Up Across the Globe (original news release)
Fig. 3 Regional trends of extreme temperatures are underestimated in climate model experiments in multiple regions globally.
Regions where observed heat waves exceed trends from climate models.
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