[Phys-L] Re: global warming

[rbtarara at SPRYNET.COM (Richard Tarara)]

The problem remains, however, that it is very difficult to lay the 1 degree
rise in 100 years directly on human activity since there are plenty of
historical and fossil records to show that the earth has undergone even
larger climate swings over the centuries.  Europe has yet to fully recover
from the mini-ice-age of the 1400s (I believe that's the century).

Of course, there is the possibility that, in fact, the earth is in a
'natural' cooling period and that human activity has contributed MORE than
the 1 degree rise.  ;-(

Rick

****************************
Richard W. Tarara
Professor of Physics
Saint Mary's College
Notre Dame, IN 46556
rtarara@saintmarys.edu

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> [Original Message]
> From: Marc Kossover <zeke_kossover@YAHOO.COM>
> To: <PHYS-L@LISTS.NAU.EDU>
> Date: 12/16/2004 6:23:59 PM
> Subject: Re: global warming
>
> --- "David T. Marx" <dtmarx@ILSTU.EDU> wrote:
>
> > My point on this is that how can we rely on climate
> > models to determine global temperatures 50 to
> > 100 years in the future, when we can't even predict
> > temperatures next week or next month?
>
> In the same way that it is difficult to predict the
> indivdual steps in a drunkard's walk problem but not
> too hard to find the overall bias in a direction.
>
> Marc "Zeke" Kossover
>
>
>
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