Robert and list, cc Eric
1. I like your enthusiasm - but suggest that your projected time
trajectory is a tad fast. The year 2030 is only 13 years away. I can support
half of your 20 Gt C/yr eventually in total - maybe by 2040 or 2050. We
should be very happy if we can ever take out as fast as we are now putting in
(which is about 10 Gt C/yr). Obviously an industry as large as today’s coal,
oil, and gas industries combined.
2. I don’t understand the ratio of 2.5 (50 Gt CO2/20 Gt C) in the
second line. Why not the usual ratio of 44/12 = 3.67 ?
3. I suggest that the soil carbon stock can also exceed by itself the
relatively light goal they have established for CDR (I’ve seen 10 Gt C/yr for
just biochar alone, and think that has some possibility.) Much better chance
of success in soil if much of the carbon comes from your algae and other ocean
sources)
Ron
> On Sep 7, 2017, at 3:37 PM, 'Robert Tulip' via geoengineering
> <geoengineering@googlegroups.com> wrote:
>
> The assumption behind the NYT interactive model
> <https://www.nytimes.com/interactive/2017/08/29/opinion/climate-change-carbon-budget.html?action=click&pgtype=Homepage&clickSource=story-heading&module=opinion-c-col-right-region®ion=opinion-c-col-right-region&WT.nav=opinion-c-col-right-region>
> that the upper bound for carbon removal is 12 GT CO2 by 2080 is too slow and
> small. We should think five times as much and five times as fast.
> Immediate aggressive investment to build industrial algae factories at sea
> could remove twenty gigatons of carbon (50 GT CO2) from the air per year by
> 2030, using 2% of the ocean surface, funded by use of the produced algae.
> That would stabilise the climate and enable no change in emission
> trajectories, a policy result that would satisfy both the needs of the
> climate and the traditional economy.
> Robert Tulip
>
>
> From: Eric Durbrow <durb...@gmail.com <mailto:durb...@gmail.com>>
> To: geoengineering <geoengineering@googlegroups.com
> <mailto:geoengineering@googlegroups.com>>
> Sent: Thursday, 7 September 2017, 3:13
> Subject: [geo] Carbon budget/removal in NYTimes interactive
>
>
> FYI There is a slick interactive graphic at the NYTimes that lets people see
> if they can meet the world’s carbon budget restriction but a combination of
> reduced emissions AND achieving Carbon Removal.
>
> At
>
> https://www.nytimes.com/interactive/2017/08/29/opinion/climate-change-carbon-budget.html?action=click&pgtype=Homepage&clickSource=story-heading&module=opinion-c-col-right-region®ion=opinion-c-col-right-region&WT.nav=opinion-c-col-right-region
>
> <https://www.nytimes.com/interactive/2017/08/29/opinion/climate-change-carbon-budget.html?action=click&pgtype=Homepage&clickSource=story-heading&module=opinion-c-col-right-region®ion=opinion-c-col-right-region&WT.nav=opinion-c-col-right-region>
>
> I failed after clicking on Reduce in all geographic areas and Achieve in
> Carbon Removal.
>
>
>
>
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