Guest essay by Rud Istvan
In recent weeks, there have been a number of WUWT guest posts on climate sensitivity related matters. Sensitivity is determined by feedbacks to increased CO2. The delta T to doubled CO2 in the absence of feedbacks is 1.1-1.2C. Monckton calculated 1.166C in his new (and unfinished) ‘Feet of Clay’ series of posts; Lindzen used 1.2 for simplicity (below). The slight difference is of no matter for this mostly conceptual post.
There have been a number of ‘skeptical’ comments and even guest response posts (FUBAR) that have gotten a lot of things ‘not quite right’ on this very important general subject including:
1. Feedback cannot be positive since conservation of energy (COE) would be violated.
2. Feedback cannot be positive since the climate would go unstable.
3. Bode feedback model does not apply to climate at all.
4. Positive feedback cannot be >0.1…
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