[ExI] Greening the Sahara
dan_ust at yahoo.com
Sat Jul 18 19:07:45 UTC 2009
--- On Fri, 7/17/09, Brent Neal <brentn at freeshell.org> wrote:
> On 17 Jul, 2009, at 17:41, Dan wrote:
> > I'll have to look this up. Thanks for recommendation!
> > Prima facie, though, I'm thinking this would be slow
> and take a long, long time. Warming up the desert would
> quickly draw in moist air, increasing rainfall. (I reckon
> the problem then would be keeping this rainfall high and
> then making sure the water doesn't just runoff and away from
> the desert area.)
> The Jordan project showed significant results in 2 years.
> The beauty of it is that success causes an acceleration in
> rate. As you get more canopy cover to slow evaporation and
> more organic matter to hold water down, you get the band of
> cooling necessary to take that warm moist air and get it to
> dump its water where you want it.
> You're exactly right about the runoff being a problem. The
> way the permies handle that is to build large swales on
> contour to hold the water in and force it to soak into the
Thanks again, Brent. I'll have to look into this and learn more about it. This seems to me actually a good way of going about it.
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