I try to stay away from policy discussions here (although others sneak it in), but this suggestion by Ross McKitrick is so ingenious that I’ll relax my policy for a while. Ross proposes a carbon tax linked to tropical troposphere temperatures – the fingerprint of the CO2 contribution to warming. If models are wrong and solar or something else is causing climate change, then it would have negligible impact. If models are right, then the tax would go up a lot. It’s an elegant idea. Calling everyone’s bluff.
Of course, it wouldn’t generate any commissions for lobbyists and brokers or expense accounts in night clubs in Moscow and Montreal; so it’s chances of passage are negligible. But isn’t it a better idea than anything on the field so far?