Carbon dioxide in the atmosphere is continuously measured by several observatories such as that at Mauna Loa, Hawaii. So far, the reduction of emissions due to the pandemic-induced economic slowdown has not resulted in a lower carbon dioxide content of the atmosphere.
As explained by Dr. Roy Spencer: “Atmospheric levels of carbon dioxide (CO2) continue to increase with no sign of the global economic slowdown in response to the spread of COVID-19. This is because the estimated reductions in CO2 emissions (around -11% globally during 2020) is too small a reduction to be noticed against a background of large natural variability. The reduction in economic activity would have to be 4 times larger than 11% to halt the rise in atmospheric CO2.” (Source) This means that carbon dioxide an insignificant driver of global warming.
See also: A Review of the state of Climate Science
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