[nafex] Re: Global warming? Where's the proof?
ginda at concentric.net
Tue Jan 16 21:09:21 EST 2001
This is off topic, so I'll be brief. But we have far more than 100
years of records. Data ranging from studies of pollen in pond sediments
to old paintings of alpine villages, to carbon isotope ratios in coral
reefs all agree pretty well that we are experiencing a period of global
warming. Recorded CO2 levels have been rising, too. Old air (sealed in
glass bottles in tombs, for example) has been extensively tested, and
the results are unambiguous. CO2 levels are rising to a level not seen
since the dinosaurs' time (which, coincidentally, seems to have been
much warmer than this time.)
I believe it is only in the US that anyone seriously disputes global
warming, and even here, scientists pretty much agree. A big
breakthrough came recently when the biggest, finest-grained climate
models started to accurately reproduce the past. All the models that
reproduce the past make similar predictions for the future. No one
knows exactly how much warming there will be, and of course, no one
knows how much more net CO2 we will release into the atmosphere. But
there is little doubt as to the general direction.
I'm not planting anything that is barely heat-hardy in my clime.
Thomas Olenio wrote:
> I am no scientist, have done no research in this area, but one thing pops
> to mind...
> Hasn't the planet been warming since the last ice age?
> It has been my experience that nature is full of cycles. Some are short
> and easy to monitor, where others take years, decades, and eons.
> A hundred years of weather records is nothing in relationship to the
> weather patterns that have changed over the eons. Who is to say man is
> responsible for the current trends?
> In science, the obvious is not always the underlying cause.
> We know that there have been weather extremes on this planet from the
> geological record prior to man being on the scene. I believe there are
> bigger forces at work.
> Just my opinion.
> Thomas Olenio
> Ontario, Hardiness Zone 6a
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