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Greenhouse Gas Effect Consistent Over 420 Million Years
Terra Daily ^
| 03/29/2007
| Staff Writers
Posted on 03/29/2007 9:30:26 AM PDT by cogitator
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Berner's been doing paleoclimate for a long time, and is pretty distinguished in the field. It will be interesting to see how the scientific community responds to this study.
1
posted on
03/29/2007 9:30:27 AM PDT
by
cogitator
To: Tolerance Sucks Rocks
2
posted on
03/29/2007 9:30:51 AM PDT
by
cogitator
To: cogitator
Correct me if I am wrong, but isn't he simply confirming the thesis that CO2 leads to warmer temperatures?
If that is the case, then the burning of fossils fuels, which clearly lead to the release of large amounts of CO2 would be raising temperatures and therefore support theories of anthropgenic climate change.
Obviusly it has occurred for natural reasons in the past, but there is nothing in the article judgmental one way or the other about the cause of the increase in CO2. Or am I missing something?
3
posted on
03/29/2007 9:37:48 AM PDT
by
Einigkeit_Recht_Freiheit
(I don't care what side of the debate you are on: Weather is not Climate)
To: cogitator
I saw nothing about causation or whether CO2 leads or lags temperature
4
posted on
03/29/2007 9:38:03 AM PDT
by
Smedley
To: Einigkeit_Recht_Freiheit
Less than one tenth of one percent, or .001, is not a significant amount of CO2 scientifically, and is all that mankind can be accused of creating.
5
posted on
03/29/2007 10:00:02 AM PDT
by
Camel Joe
(liberal=socialist=royalist/imperialist pawn=enemy of Freedom)
To: Einigkeit_Recht_Freiheit
simply confirming the thesis that CO2 leads to warmer temperatures The order appears to be the other way. Increased temperature produced increased partial pressure CO2. Somebody can produce a chart of data from cores.
6
posted on
03/29/2007 10:02:59 AM PDT
by
RightWhale
(Treaty rules;commerce droolz; Repeal the Treaty)
To: cogitator
I seem to remember reading about a report a year or so ago, and maybe you can help me track it down, about the Himalayan limestones evolving enormous amounts of CO2 due to increased rainfall. It's neither here nor there, just something from flash memory.
7
posted on
03/29/2007 11:55:39 AM PDT
by
Lil'freeper
(You do not have the plug-in required to view this tagline.)
To: Smedley
I saw nothing about causation or whether CO2 leads or lags temperatureI'm still working on that in my profile, point #5. On the million year timescales this covers, any lag is unnoticeable.
8
posted on
03/29/2007 1:33:10 PM PDT
by
cogitator
To: Lil'freeper
I seem to remember reading about a report a year or so ago, and maybe you can help me track it down, about the Himalayan limestones evolving enormous amounts of CO2Send me a private mail to remind me tomorrow. These are necessarily short replies right now.
9
posted on
03/29/2007 1:34:26 PM PDT
by
cogitator
To: cogitator
A popular predictor of future climate sensitivity is the change in global temperature produced by each doubling of CO2 in the atmosphere. This study confirms that in the Earth's past 420 million years, each doubling of atmospheric CO2 translates to an average global temperature increase of about 3 Celsius, or 5 Fahrenheit. Unless, of course, the opposite is true - that an average global increase of 3 degress Celcius triggers a doubling of CO2 in the atmosphere.
10
posted on
03/29/2007 1:36:01 PM PDT
by
dirtboy
(Duncan Hunter 08/But Fred would also be great)
To: Einigkeit_Recht_Freiheit
From the article:
A popular predictor of future climate sensitivity is the change in global temperature produced by each doubling of CO2 in the atmosphere.An article like this supports climate sensitivity to anthropogenic CO2 increases, which has been estimated by several other methods (with appropriate error bars). The range is 1.5 to 4.5 C in the IPCC. 3C lands right in the middle.
To: Camel Joe
Less than one tenth of one percent, or .001, is not a significant amount of CO2 scientifically, and is all that mankind can be accused of creating.
To: dirtboy
Unless, of course, the opposite is true - that an average global increase of 3 degrees Celcius triggers a doubling of CO2 in the atmosphere.Still working on explaining this in my profile. You have to have a different radiative forcing factor capable of inducing that large a temperature change independent of atmospheric CO2 concentrations. The main secondary factor (speaking from the paleoclimate community perspective) in glacial-interglacial transitions was albedo. On Berner's timescales, erosion rates and plate tectonics are major players.
To: cogitator
Still working on explaining this in my profile. You have to have a different radiative forcing factor capable of inducing that large a temperature change independent of atmospheric CO2 concentrationsGee, maybe the sun did it?
14
posted on
03/29/2007 1:53:19 PM PDT
by
dirtboy
(Duncan Hunter 08/But Fred would also be great)
To: cogitator
New calculations show that sensitivity of Earth's climate to changes in the greenhouse gas carbon dioxide (CO2) has been consistent for the last 420 million years, according to an article in Nature by geologists at Yale and Wesleyan Universities.I don't see why not. I doubt anybody rewrote the laws of physics during all that time.
To: texianyankee; JayB; ElkGroveDan; markman46; palmer; Bahbah; Paradox; FOG724; Mike Darancette; ...
Comment #17 Removed by Moderator
To: DaveLoneRanger
To: cogitator
If my warped memory serves me correctly, 3 deg C for every doubling of CO2 content implies a logarithmic function. If CO2 is increasing at a constant rate, the temperature will increase more and more slowly as time marches on. Of course, I doubt that the rate of CO2 increase is constant; with our sorry luck, it's probably accelerating.
To: Tolerance Sucks Rocks; cogitator
Of course, if AGW ultimately is a net benefit, perhaps I'll be saying "good luck" instead of "sorry luck."
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