On 27/03/2008, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
>
> I often hear the explanation that weather equals "noise" and climate
> equals "long term trends". Putting that into a simple mathematical
> example, we might have "noise" being a six sided dice multiplied by
> 0.01C and the trend being 0.01C per year. Then we can have a 1 year
> drop of 0.04C and five years of no trend in spite of there really
> being a trend.
>
> So far so simple, except how do we know that "noise" is mostly about
> short time scales and mostly random?
>
> What's the physical explanation behind that?
Aparts from James's answer, you can look up the Hasselmann (sp???)
model, which is that white noise plus ocean heat capacity becomes red
noise.
-W.
--
William M. Connolley | www.wmconnolley.org.uk | 07985 935400
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