[permaculture] Keyline Design - "Challenge of Landscape" book
permaculture at juggernaut.com.au
Mon Oct 17 17:41:04 EDT 2011
On 15/10/11 12:12 AM, Lawrence F. London, Jr. wrote:
> On another topic I am wondering about drought conditions here and in
> Australia, and Texas too. Looks like we may be entering a dry spell
> here in Chapel Hill, little or no frozen precipitation predicted for
> NC this winter whereas much more of that in states nearby, especially
> upper midwest and northeast.
If neighboring states are receiving average precipitation and it's dry
near your place then that's probably just a statistical anomaly. In this
case you can expect to receive average rainfall in the months ahead. But
if winter precipitation makes up a major portion of your annual rainfall
then even average rainfall could leave you in a difficult position
Australia had been in the grip of an El Nin~o event for the last 8 or 9
years. But the drought broke spectacularly last summer with massive and
widespread floods. More cyclones and floods have been forecast for this
summer. El Nin~o and La Nin~a are linked cyclic systems. So if we're in
drought, North and South America experience above average rainfall.
So now we're having floods and above average rainfall, you could expect
to receive below average.
I'm not sure that the effect of El Nin~o extends to the Carolinas... I
would expect your weather to be governed more by Atlantic systems,
although all weather systems are linked.
One of the likely effects of climate change are more unpredictable and
extreme weather events, including periods of below average rainfall. If
you are highly dependent on access to water, it might be worth
investigating the option of sinking some dams or wells/bores.
More information about the permaculture