Cornell University and Stanford Univ are also a purveyors of phony ideologies like the Global Warming hoax and Climate Change religion! The first author of this featured research article is an associate professor of applied economics (not an expert on climate) at Cornell University. The last author is with Stanford University. The first author is clearly a zealot of the Global Warming hoax/Climate Change religion!
Who popularizes such pseudoscience: McKinsey & Company via Bloomberg news
The first thing to notice is that the researchers used the very controversial term "anthropogenic" in their title. Any reasonable researcher would have avoided that! This should have also been a flashing warning sign to any reviewer before accepting this article for publication in a Nature journal!
The second thing to notice is that Cornell University and the first author invoke the seven year famine as outlined in the Bible (see Genesis)!
To declare a 21% TFP loss over 60 years is equivalent to a loss of TFP growth of the last seven years is very dubious!
The effort here is very complex, multidecadal and covering the whole globe at the country level! "The latest climate models" are themselves dubious!
Is it not possible that overpopulation, wars and civil strife, or dictatorships may have contributed to some loss of TFP. The abstract of the study is silent on other, perhaps more relevant explanations!
In conclusion, this research article has more the quality of a political hit piece than serious scientific research! Shame on Nature Climate Change for accepting such a paper!
Just take a look the few countries with negative TFP growth (in yellow color on the world map below). There is e.g. the Democratic Republic of Congo. This is the second largest country in Africa. It was ruled by megalomaniac dictator from 1965-1997, since then this country has been plagued by civil war etc. In Angola we find a similar situation! How stupid were these five authors of this study?
"... The scientists and economists developed an all-encompassing econometric model linking year-to-year changes in weather and productivity measures with output from the latest climate models over six decades to quantify the effect of recent human-caused climate change on what economists call “total factor productivity,” a measure capturing overall productivity of the agricultural sector. ...mans have already altered the climate system, Ortiz-Bobea said, as climate science indicates the globe is about 1 degree Celsius warmer than without atmospheric greenhouse gases. ..."
"... Our baseline model indicates that ACC has reduced global agricultural TFP [total factor productivity] by about 21% since 1961, a slowdown that is equivalent to losing the last 7 years of productivity growth. The effect is substantially more severe (a reduction of ~26–34%) in warmer regions such as Africa and Latin America and the Caribbean. ..."
Climate change has cost 7 years of ag productivity growth | Cornell Chronicle
Here is the link to the underlying research paper:
Anthropogenic climate change has slowed global agricultural productivity growth (open access)
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