At 11:37 AM 4/26/2006, Rich Blinne wrote:
>On 4/26/06, Janice Matchett
><<mailto:janmatch@earthlink.net>janmatch@earthlink.net> wrote:
>At 09:10 AM 4/26/2006, Rich Blinne wrote:
>
>>"...My previous post gave the data behind the
>>assertion that we are at unprecedented levels of CO2 right now. ..."
>
>@ You have been duped. Your "data" is
>flawed. See the 4 items below. ~ Janice
>
>
>None of those 4 items mention CO2 levels in ice
>cores. If you claim my data is flawed at least
>give something that contradicts it.
@ As if you can't find it yourself?????? Why
do I suspect that you aren't really interested in
learning the truth for fear that it will
undermine what you want to believe? ~ Janice
Google Results 1 - 10 of about 89,600 for CO2
<http://www.google.com//url?sa=X&oi=dict&q=http://www.answers.com/levels%26r%3D67>levels
in
<http://www.google.com//url?sa=X&oi=dict&q=http://www.answers.com/ice%26r%3D67>ice
<http://www.google.com//url?sa=X&oi=dict&q=http://www.answers.com/cores%26r%3D67>cores
<http://www.google.com//url?sa=X&oi=dict&q=http://www.answers.com/junk%26r%3D67>junk
<http://www.google.com//url?sa=X&oi=dict&q=http://www.answers.com/science%26r%3D67>science
http://www.google.com/search?hl=en&q=CO2+levels+in+ice+cores+junk+science&btnG=Google+Search
Hot Air Hysteria Thursday, March 16, 2006 By
Steven Milloy http://www.foxnews.com/story/0,2933,188176,00.html
[snip]
"....Dr. Jaworowski says that the ice core-based CO2 estimates are unreliable.
First, ice core-based CO2 estimates vary even
more than the 19th century direct measurements,
generally ranging from 160 ppm to about 700 ppm
with some readings as high as 2,450 ppm. But
because the higher estimates are politically
incorrect – that is, they don’t support the
notion of manmade global warming – Dr. Jaworowski
says they haven’t been mentioned in the published
scientific literature since the mid-1980s when
global warming fever began to spread.
The official “rationale” for ignoring the higher
ice core readings is that they supposedly have
been “contaminated” by the contemporary
atmosphere – but it’s an excuse that actually
undermines the validity of all ice cored-based
measurements. Ice core data do get contaminated,
according to Dr. Jaworowski, but in the opposite direction.
In order for ice core data to be considered
reliable, the ice matrix must be a closed system
– that is, once air is trapped in ice it should
remain unchanged. But Dr. Jaworowski says that
glaciers aren’t closed systems. Liquid water is
present even in the coldest Antarctic ice (-73 degrees Centigrade).
“More than 20 physico-chemical processes, mostly
related to the presence of liquid water,
contribute to the alteration of the original
chemical composition of the air inclusion in
polar ice,” Dr. Jaworowski told Senators.
The act of drilling for ice core samples further
alters the composition of the trapped air. As
deep ice is compressed, trapped air bubbles turn
into tiny crystals. Drilling decompresses ice
cores – causing cracks in the ice and
decomposition of the crystals into gases which
differentially escape at varying pressures and
depths – leading to a net depletion of CO2 in the
air trapped in the ice cores, according to Dr. Jaworowski.
“This is why the records of carbon dioxide… in
deep polar ice show values lower than in the
contemporary atmosphere, even for epochs when the
global surface temperature was higher than now,” Dr. Jaworowski testified.
If pre-industrial CO2 levels are in fact closer
to the directly measured 19th century average of
335 ppm versus the questionably estimated 280
ppm, then human activity would be correlated with
a much smaller increase in atmospheric CO2 levels
– which only adds to the confusion over global warming.
Mean global temperature appears to have warmed by
about one degree Fahrenheit during the 20th
Century. About half that warming occurred prior
to 1940, while most of the century’s manmade
greenhouse gas emissions occurred after 1940. The
global cooling that occurred from 1940 to 1970 –
which led some worriers to sound alarms during
the mid-1970s about a looming ice age – actually
occurred simultaneously with increasing manmade greenhouse gas emissions.
There really are only two certainties in the
debate over climate change. First, we really
don’t have a sufficient understanding of climatic
processes to predict with reasonable certainty
the impact of greenhouse gas emissions on climate.
But we do know that mandatory caps on greenhouse
gas emissions – like those required in Europe by
the Kyoto Protocol and currently advocated in the
U.S. by Sens. Pete Domenici, R-N.M., and Jeff
Bingman, D-N.M., – will harm the economy by
making energy more expensive and less available.
European nations are already choosing to forego
global warming alarmism and compliance with Kyoto
in favor of economic survival and growth. Let’s
hope that message gets through the global warming
ice core in which Sens. Domenici and Bingaman seem to be trapped.
Steven Milloy publishes
<http://www.junkscience.com/>JunkScience
.<http://www.junkscience.com/>com and
<http://www.csrwatch.com/>CSRWatch
.<http://www.csrwatch.com/>com. He is a
<http://www.junkscience.com/Junkman.html>junk
<http://www.junkscience.com/Junkman.html>science
expert, an
<http://www.freeenterpriseactionfund.com/>advocate
of free enterprise and an adjunct scholar at the
<http://www.cei.org/>Competitive Enterprise Institute.
Received on Wed Apr 26 12:56:50 2006
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