Judith Curry : Carbon Lockdown

Dr Judith Curry insists, quite correctly, that we should take uncertainties into account when deciding Climate Change policy.

Yet I think our respective positions probably strongly differ on which way we weight the uncertainties.

I strongly favour the Precautionary Principle, implemented Early, making it the “Early Precautionary Principle”.

One of the reasons I come down on this end of the spectrum of possible responses to uncertainties is that there are quite a spectrum of unknowns that form the pillars of those uncertainties.

After all, if we don’t know a term in an equation, how can we possibly calculate anything meaningful with any kind of confidence ?

How can anybody feel safe and secure not knowing for certain what the actual equilibrium Climate Sensitivity amounts to ? The response of the Earth’s Climate system to extra airborne Carbon Dioxide-forced temperature rise is a number that is becoming firmer, but there are error bars. Surely this points to conservatism in emissions ?

Moreover, we could be well advised to cut back on Fossil Fuel burning not just to protect the Climate, but to save the Economy. How can we pursue our normal everyday Carbon-emitting lives not knowing how much Fossil Fuel there is left in the ground that can be inexpensively mined ?

How can we know the order of magnitude of Fossil Fuels left to extract ? And how can we know what kind of impact this will have on the Climate ?

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