Atmospheric carbon dioxide (CO2) has had no significant effect on average global temperature. This deduction employs existing data and the computational mandate that temperature change is in response to the time-integral of the net forcing; not proportionately to the instantaneous value of the net forcing itself. This finding also stongly suggests that Anthropogenic Global Warming (AGW) is flawed and climate sensitivity (the increase in average global temperature (AGT) due to doubling of CO2 is not significantly different from zero.
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