by Andy May, September 18, 2018  WUWT

In Part A of the Great Debate series (see here) we discussed Dr. David Karoly’s and Dr. William Happer’s arguments regarding how unusual recent global warming is and how we know the recent observed increase in CO₂ is due to human activities. In Part B we examined their thoughts on the amount of warming caused by greenhouse gas emissions and the accuracy of the calculation. In Part C we discussed the dangers of global warming, the calculation of the vital value of ECS (the equilibrium climate sensitivity to a doubling of CO2), and discuss the need to do something about climate change. In this final part of the series I will summarize the debate and provide my thoughts.

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