Text 16289, 49 rader
Skriven 2007-02-19 11:39:58 av Joe Hunt (1:379/45)
Ärende: Re: where the hell is my global warming?
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From: Joe Hunt <jhunt@dslextreme.com>

What do you think of this person's views?

The article is a profile of and interview with this person.

http://www.sas.upenn.edu/earth/giegenga.html

http://www.phillymag.com/articles/science_al_gore_is_a_greenhouse_gasbag


"To determine temperatures and carbon dioxide levels in the distant past,
scientists rely on what they call the 'proxy record.' There weren’t
thermometers. So researchers drill deep down into the Antarctic ice sheet and
the ocean floor and pull up core samples, whose varying chemical elements let
them gauge both the CO2 levels and the temperatures of the distant past.

Gieg clicks a button, and three charts come together. The peaks and valleys of
the Milankovi'c cycles for planetary temperature align well with the
ocean-floor estimates, and those match closely the records of carbon dioxide
concentrations and temperature indications from ice cores. So, the professor
maintains, these core samples from the polar ice and ocean floor help show that
the Earth’s temperature and the levels of carbon dioxide in the atmosphere have
been in lockstep for tens of thousands of years.

Of course, that was long before anybody was burning fossil fuels. So Giegengack
tells his students they might want to consider that
'natural' climatic temperature cycles control carbon dioxide levels,
not the other way around. That’s the crux of his argument with Gore’s view of
global warming - he says carbon dioxide doesn’t control global temperature, and
certainly not in a direct, linear way. "


On Sun, 18 Feb 2007 22:45:10 -0500, "Robert Comer"
<bobcomer@mindspring.com> wrote:

>> If it is part of a natural warming/cooling cycle, then it's unlikely we
>> can do anything to affect it.
>
>I totally disagree with the premise that we can do nothing no matter the
>cause for one, and we *have* contributed quite a lot of CO2 ourselves, so
>saying we have had no effect is not looking at the facts.
>
>>At best we might be able to adapt.
>
>That's a defeatist attitude.

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