Is Modern CO2 just different?

[Old Rocks]

SSo DDumb, once again you are pulling numbers out of your ass.


At the end of the Ice Age, it took 7,000 years for carbon dioxide levels to rise by 80 parts per million, Tans said. Because of the burning of fossil fuels, carbon dioxide levels have gone up by the same amount in just 55 years.

The speed of the change is the big worry, said Pennsylvania State University climate scientist Michael Mann. If carbon dioxide levels go up 100 parts per million over thousands or millions of years, plants and animals can adapt. But that can't be done at the speed it is now happening.

The last time the worldwide carbon level was probably this high was about 2 million years ago, Tans said. That was during the Pleistocene Era.

"It was much warmer than it is today," Tans said. "There were forests in Greenland. Sea level was higher, between 10 and 20 meters (33 to 66 feet)."

Other scientists say it may have been 10 million years since Earth last encountered this level of carbon dioxide. The first modern humans only appeared in Africa about 200,000 years ago.



Read more at: Greenhouse gas level highest in two million years NOAA reports Update 2

 

[Old Rocks]

Atmospheric carbon dioxide concentrations over the past 60 million years Abstract Nature

Atmospheric carbon dioxide concentrations over the past 60 million years
Paul N. Pearson1 & Martin R. Palmer2

1. Department of Earth Sciences, University of Bristol, Queens Road, Bristol BS8 1RJ, UK
2. T. H. Huxley School, Imperial College, RSM Building, Prince Consort Road, London SW7 2BP, UK

Correspondence to: Paul N. Pearson1 Correspondence and requests for materials should be addressed to P.N.P. (e-mail: Email: [email protected]).



Topof page
Abstract
Knowledge of the evolution of atmospheric carbon dioxide concentrations throughout the Earth's history is important for a reconstruction of the links between climate and radiative forcing of the Earth's surface temperatures. Although atmospheric carbon dioxide concentrations in the early Cenozoic era (about 60 Myr ago) are widely believed to have been higher than at present, there is disagreement regarding the exact carbon dioxide levels, the timing of the decline and the mechanisms that are most important for the control of CO2concentrations over geological timescales. Here we use the boron-isotope ratios of ancient planktonic foraminifer shells to estimate the pH of surface-layer sea water throughout the past 60 million years, which can be used to reconstruct atmospheric CO2 concentrations. We estimate CO2 concentrations of more than 2,000 p.p.m. for the late Palaeocene and earliest Eocene periods (from about 60 to 52 Myr ago), and find an erratic decline between 55 and 40 Myr ago that may have been caused by reduced CO2 outgassing from ocean ridges, volcanoes and metamorphic belts and increased carbon burial. Since the early Miocene (about 24 Myr ago), atmospheric CO2 concentrations appear to have remained below 500 p.p.m. and were more stable than before, although transient intervals of CO2 reduction may have occurred during periods of rapid cooling approximately 15 and 3 Myr ago.

Why don't you at least try to do minimal research before you flap your silly yap, SSo DDumb?

 

[SSDD]

SSo DDumb, once again you are pulling numbers out of your ass.


At the end of the Ice Age, it took 7,000 years for carbon dioxide levels to rise by 80 parts per million, Tans said. Because of the burning of fossil fuels, carbon dioxide levels have gone up by the same amount in just 55 years.

You say that as if you believe that it matters. You say that as if you had some actual empirical evidence that increased CO2 in the atmosphere caused warming. You say that as if you were completely unaware that the earth has repeatedly gone into ice ages with CO2 levels above 1000ppm. You say it as if you were a gullible idiot who believes the CAGW hoax is real.

 

[Billy_Bob]

SSo DDumb, once again you are pulling numbers out of your ass.


At the end of the Ice Age, it took 7,000 years for carbon dioxide levels to rise by 80 parts per million, Tans said. Because of the burning of fossil fuels, carbon dioxide levels have gone up by the same amount in just 55 years.

The speed of the change is the big worry, said Pennsylvania State University climate scientist Michael Mann. If carbon dioxide levels go up 100 parts per million over thousands or millions of years, plants and animals can adapt. But that can't be done at the speed it is now happening.

The last time the worldwide carbon level was probably this high was about 2 million years ago, Tans said. That was during the Pleistocene Era.

"It was much warmer than it is today," Tans said. "There were forests in Greenland. Sea level was higher, between 10 and 20 meters (33 to 66 feet)."

Other scientists say it may have been 10 million years since Earth last encountered this level of carbon dioxide. The first modern humans only appeared in Africa about 200,000 years ago.



Read more at: Greenhouse gas level highest in two million years NOAA reports Update 2

The only dumb ass is you...

Tell me again moron how we survived 7,000ppm and had ice ages at that level and how the planet warmed and cooled, yet never left its NORMAL RANGE...

 

[elektra]

Todd, why do you advocate shutting down the economy?

Same question for Billy and Frank. Are you secretly communists? Wait, that's not a secret, so let me rephrase that. Why are you two such openly proud communists?

A better question is why do you refer to the Bloated Government Bureaucracy, as the, "Economy".

 

[SSDD]

SSo DDumb, once again you are pulling numbers out of your ass.


At the end of the Ice Age, it took 7,000 years for carbon dioxide levels to rise by 80 parts per million, Tans said. Because of the burning of fossil fuels, carbon dioxide levels have gone up by the same amount in just 55 years.

The speed of the change is the big worry, said Pennsylvania State University climate scientist Michael Mann. If carbon dioxide levels go up 100 parts per million over thousands or millions of years, plants and animals can adapt. But that can't be done at the speed it is now happening.

The last time the worldwide carbon level was probably this high was about 2 million years ago, Tans said. That was during the Pleistocene Era.

"It was much warmer than it is today," Tans said. "There were forests in Greenland. Sea level was higher, between 10 and 20 meters (33 to 66 feet)."

Other scientists say it may have been 10 million years since Earth last encountered this level of carbon dioxide. The first modern humans only appeared in Africa about 200,000 years ago.



Read more at: Greenhouse gas level highest in two million years NOAA reports Update 2

The only dumb ass is you...

View attachment 34911

Tell me again moron how we survived 7,000ppm and had ice ages at that level and how the planet warmed and cooled, yet never left its NORMAL RANGE...

Rocks doesn't seem to be bright enough to look at that graph and realize that the present temperature is so far from the earth's normal temperature as to be disturbing....One would think he would want to get closer to normal rather than languish in the present ice age.