A previous post on CO2isLife demonstrated that if you isolate the impact of CO2 on atmospheric temperatures by controlling for H2O and the Urban Heat Island Effect, you discover that CO2 has had no measurable impact on atmospheric temperatures over the past 50+ years. (Click the Following Link)
Critics may attack that post because it only addressed the S. Hemisphere, which is fair, misguided and desperate, but fair. Now there is evidence that when the same approach is applied to the N. Hemisphere, this time using Greenland instead of Antarctica, the results are the same. CO2 has no measurable impact on atmospheric temperatures if efforts are made to control for H2O and the heat island effect. In reality, ground temperature measurements aren’t measuring the impact of CO2 on the atmosphere, they are measuring the impact of H2O and the Urban Heat Island effect on atmospheric temperatures, neither of which have to do with CO2.
The following finding is 100% exactly what we predicted here at CO2isLife…and none of us have Ph.Ds in Climate Science. We at CO2isLife have Ph.Ds in Common Sense specializing in the proper application of the Scientific Method. Our Imaginary Ph.Ds seem to trump the experts. Imagine that.
Schmithüsen and colleagues reached the conclusion that CO2-forcing is “rather small” and even “weak“ at the poles. They found the planet’s tiniest warming signal from CO2 occurs for central Antarctica; they characterized the CO2-forcing for the Arctic region as “comparatively weak”. For example, quadrupling CO2 concentrations over the Antarctic Plateau is poised to yield a net radiative forcing value of just 1 W m-2.
The authors even assert that increasing CO2 concentrations causes atmospheric cooling in some areas above the Antarctic continent. They characterize this as a “negative greenhouse effect” due to the “increased long-wave energy loss to space, which cools the Earth-atmosphere system”.
Key points from the paper are highlighted below.
Why would CO2 actually cool the atmosphere? Well, we cover that here at CO2isLife as well. (Click the Following Link)
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