[Terrapreta] Fwd: Fwd: Global Carbon Cycle

[Tom Miles]

When you do your personal calculations you'll find anything from 8-15 tpy
CO2 emissions, at 0.3 tC/tCO2 (~3.33 tCO2/tC) that's 2.4-6 tpy. That was the
purpose of my calculation of the area required for applying carbon.  At 5-10
t/ha (2-4 t/a) that's about 1 acre (4 tC) per person per year.  

http://terrapreta.bioenergylists.org/carbondioxide

 

It makes sense to invest in carbon sequestration through productive
agriculture at the rate of 1 acre (4t) per person/year. At a US population
of 302,011,659 (at 18:52 GMT (EST+5) Jun 05, 2007) that's 302 million acres
per year or about 1.2 billion tons of charcoal per year. At 25% net yield of
charcoal that's 4.8 million tons of biomass or more than 4 times what the
USDOE says we have available for energy.   

 

Tom

 

From: terrapreta-bounces at bioenergylists.org
[mailto:terrapreta-bounces at bioenergylists.org] On Behalf Of Duane Pendergast
Sent: Tuesday, June 05, 2007 11:31 AM
To: 'Sean K. Barry'
Cc: terrapreta at bioenergylists.org
Subject: Re: [Terrapreta] Fwd: Fwd: Global Carbon Cycle

 

That tonne/capita example puts an encouraging perspective on the magnitude
of the problem Sean. I keep track of our personal emissions. Even our two
person household here in carbon sinful Canada is responsible for only about
8 tonnes of carbon emissions per year. I guess we could engage the services
of those nurturing the land through some kind of carbon sink credit.

 

Duane

 

-----Original Message-----
From: terrapreta-bounces at bioenergylists.org
[mailto:terrapreta-bounces at bioenergylists.org] On Behalf Of Sean K. Barry
Sent: June 5, 2007 12:06 PM
To: code suidae; Kevin Chisholm
Cc: terrapreta at bioenergylists.org
Subject: Re: [Terrapreta] Fwd: Fwd: Global Carbon Cycle

 

 

 

The synchronicity of those two numbers just came to me; 6 billion people and
6 billion tons of carbon per year.

That means, if every man, woman, and child, took a whole year to make just
one ton of charcoal and buried it, then the human race would have a carbon
neutral footprint, even while we still burned up all the fossil fuel at the
rate we are burning it now.  Make it two or three tons per person per year
and we could march the carbon balance right back to pre-industrial levels in
probably a few decades, and still burn all of the fossil fuel (at even
faster rates, perhaps).

 

What does anybody think of that?  Butt-load (and then some) of charcoal, I
say.

 

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