by Dr. Ed Berry
Tom Quirk shows natural variability of the climate is the prime cause of increasing CO2, not the emissions of CO2 from the use of fossil fuels.
The IPCC core hypothesis is that human CO2 causes all the increase in atmospheric CO2 above 280 ppm.
However, data from:
- the fractionation of CO2 by way of Carbon-12 and Carbon-13 isotopes,
- seasonal variations CO2 concentration in the Northern Hemisphere and
- the time delay between Northern and Southern Hemisphere variations in CO2,
suggest that El Nino and the Southern Oscillation events produce major changes in the carbon isotope ratio in the atmosphere.
Some 75% of human carbon dioxide emissions are in the northern hemisphere. Data using carbon 14 showed there is a 2 to 3 year time delay for carbon dioxide to move from one hemisphere to the other. Therefore, we should be able to measure the difference in the emission rates between the northern and southern hemispheres.
However, data of seasonal variations of CO2 show there is no time delay between the northern and southern hemispheres.
This implies that human-produced CO2 is almost totally absorbed locally in the year it is emitted. This also implies that major changes in atmospheric carbon dioxide are caused by nature and not by humans.
This implies natural variability of the climate is the prime cause of increasing CO2, not the emissions of CO2 from the use of fossil fuels.