David B. Benson wrote:
> On Sep 9, 12:26 pm, Michael Tobis <[email protected]> wrote:
>> I have several doubts.
> I do as well, but mostly about the optimistic
> asssumptions for water requirements.
>> Chief among them is this: it is important to understand that even if a
>> biofuel plan is sustainable, it is not necessarily a sustainable
>> carbon sink.
> When steady state is reached, begin burying compressed biochar
> (essentially high grade coal) deep underground (like coal).
Or use it as biofuel. But 100 years of carbon sink would be a pretty
good solution regardless of its finite nature.
>> Thirdly, I'm not sure that the coupling between land surface and
>> rainfall is one of the more robust model results, so I don't think we
>> ought to bet the farm on it.
It is widely accepted in the paleo community that the biofeedback is an
important factor in the greening of the sahara 6000 years ago.
James
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