Re: More for the climate change deniers

Steve Johnson wrote:
"earth abides" <lordkoos@xxxxxxxxx> wrote in message
news:e098e426-922f-408b-813f-1f5ff8636ecf@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
CO2 now highest in 15 million years
by Keith Pickering

Fri Oct 09, 2009 at 01:41:11 PM PDT

A new and accurate technique has found that current CO2 levels are
higher now than at any time in the past 15 million years.

"The last time carbon dioxide levels were apparently as high as
they are today - and were sustained at those levels - global
temperatures were 5 to 10 degrees Fahrenheit higher than they are
today, the sea level was approximately 75 to 120 feet higher than
today, there was no permanent sea ice cap in the Arctic and very
little ice on Antarctica and Greenland," said the paper's lead author,
Aradhna Tripati, a UCLA assistant professor in the department of Earth
and space sciences and the department of atmospheric and oceanic
sciences.


Think about that for a moment: even if we eliminate 100% of all carbon
emissions today, worldwide ... the existing CO2 in the air will still
take us all to a planet where no human being has ever lived.

Determining long-ago levels of CO2 in the air is tricky business. The
most straightforward way to do it is with ice cores. As snow falls, it
traps little pockets of air that get squeezed down into tiny bubbles
within what eventually becomes ice. If that ice is very old -- like in
Greenland or Antarctica -- you can open up those bubbles and measure
the gases within them directly, from the time when the snow originally
fell.

The problem is that even the deepest ice cores in Antarctica only go
back 800,000 years. Beyond that, you need to use a proxy of some kind.
And up till now, those proxy indicators have been pretty fuzzy.

Author Tripati and her colleagues used the ratio between boron and
calcium in fossil shells of formanifera (a type of diatom, or
microscopic marine life) as their new proxy. They were able to
validate this proxy using the existing well known ice cores during the
past 800,000 years, and showed that their technique had an error of
only 14 ppm, vastly superior to any previous proxy method.

Then they were able to reconstruct the CO2 levels much farther back
using the same proxy. This confirms what most have long suspected: the
current CO2 levels are higher than at any time in many millions of
years -- long before the evolution of human beings, or of most of the
species we rely upon for food.

The good news is, it takes a while for the oceans to warm up. The bad
news is, we're not doing anything -- or not nearly enough -- to
prevent it.



.....................................

So why don't you do YOUR part to reduce co2 emissions. Hold your
breath!!
Seriously....if you were talking about Carbon MONOXIDE or Sulfur
DIOXIDE, I would wholeheartedly agree with you. CO2 is NOT the
culprit here,

Wrong.

in fact if you bother to check the actual facts, you'll
find that the 1 degree temperature increase everyone is up in arms
about has not only corrected itself in the last 10 years,

Wrong.

we've
actually reduced the global average temp an additional degree.

Wrong.

Ocean
temperatures are at a 20 year low

Wrong.

and the ice caps are back.

...to shrinking.



CO2 is a GOOD thing!

...for storing heat.


.

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