Dr. Calvin:
1. I'd like to follow up on your statement below:
> Better to get nutrients by pumping up and then pumping down the new green
> stuff --before it can decompose-- into deep waters that take a thousand years
> to begin resurfacing and then are spread out over 10k years.
2. Since you wrote on this list about push-pull pumping 13 months
ago, Michael Hayes and others have been talking on this list about harvesting
the produced ocean biomass and using it on land - probably via pyrolysis and
biochar. The costs would be greater than for your approach, but also the
benefits - in useful energy (backup for wind/solar) and soil productivity
improvement. Also I have seen concerns about your down-pushed biomass
decomposing at depth.
3. What are your thoughts on this single pump-up approach - with CDR in
soils, not deep oceans?
Ron
On Feb 8, 2014, at 7:08 AM, William Calvin <[email protected]> wrote:
> Oops, cut and paste left out the rest. Here again:
> A rather lame assessment.
>
> Solar radiation management will have a big problem: an uneven application
> will rearrange the winds and thus precipitation. Guess who they will blame
> for the droughts.
>
> Doubling forests is the right amount of carbon but keeping it from returning
> to the air via fire and rot is impractical; we cannot even do it in rain
> forests.
>
> Iron blooms sink only 25% of the carbon into deep water and less than 1% into
> sediments. Better to get nutrients by pumping up and then pumping down the
> new green stuff --before it can decompose-- into deep waters that take a
> thousand years to begin resurfacing and then are spread out over 10k years.
>
> -WHC
>
>
> On Sat, Feb 8, 2014 at 5:31 AM, Andrew Lockley <[email protected]>
> wrote:
> http://www.lawrentian.com/archives/1002557
>
> Olson gives Spoerl Lecture on geoengineering, climate change solutions
>
> <snipped by RWL>
> --
> William H. Calvin
> [email protected] WilliamCalvin.org
>
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