[Terrapreta] [biochar] RE: re Cameron Smith has some questions

[folke Günther]

*Sorry, but it's even worse: The right figure is* *eight billion tons of
carbon
That is, **Twenty-nine billion tons of carbon dioxide
You can not fight that with charring only, you also have to reduce the
emissions by about 90% (1 Gt C/year). Then, if you are good at it, and
increase the charring to about  two billion tonnes of carbon per year, you
may reach a somewhat safe level, 350 ppm, in about
 70 years
**
S*orry for the screaming
FG
**

 *Humans are adding over **eight billion tons of carbon dioxide to the
> atmosphere every year *from the burning of fossil fuels (natural gas, coal
> and oil*)!  (3.67 tonnes of carbon dioxide is equivalent to 1 tonne of
> solid carbon.)*
>
> *This is why the Global atmosphere is warming, polar ice caps are melting,
> and we are at such a critical point with respect to the biological
> equilibrium that keeps us all alive.*
>

-- 
NB :Send your mails to folkeg at gmail.com, not to holon.se
----------------------------------------
Folke Günther
Kollegievägen 19
224 73 Lund
Sweden
Phone: +46 (0)46 141429
Cell: +46 (0)709 710306
URL: http://www.holon.se/folke
BLOG: http://folkegunther.blogspot.com/
-------------- next part --------------
An HTML attachment was scrubbed...
URL: /attachments/20080628/e9b3b015/attachment.html