The chatter that humans can control the temperature comes from an EU campaign,
http://ec.europa.eu/environment/climat/campaign/
Posted on 10/14/2010 3:19:26 PM PDT by decimon
NEW YORK -- Water vapor and clouds are the major contributors to Earth's greenhouse effect, but a new atmosphere-ocean climate modeling study shows that the planet's temperature ultimately depends on the atmospheric level of carbon dioxide.
The study, conducted by Andrew Lacis and colleagues at NASA's Goddard Institute for Space Studies (GISS) in New York, examined the nature of Earth's greenhouse effect and clarified the role that greenhouse gases and clouds play in absorbing outgoing infrared radiation. Notably, the team identified non-condensing greenhouse gases -- such as carbon dioxide, methane, nitrous oxide, ozone, and chlorofluorocarbons -- as providing the core support for the terrestrial greenhouse effect.
Without non-condensing greenhouse gases, water vapor and clouds would be unable to provide the feedback mechanisms that amplify the greenhouse effect. The study's results will be published Friday, Oct. 15 in Science.
A companion study led by GISS co-author Gavin Schmidt that has been accepted for publication in the Journal of Geophysical Research shows that carbon dioxide accounts for about 20 percent of the greenhouse effect, water vapor and clouds together account for 75 percent, and minor gases and aerosols make up the remaining five percent. However, it is the 25 percent non-condensing greenhouse gas component, which includes carbon dioxide, that is the key factor in sustaining Earth's greenhouse effect. By this accounting, carbon dioxide is responsible for 80 percent of the radiative forcing that sustains the Earth's greenhouse effect.
The climate forcing experiment described in Science was simple in design and concept -- all of the non-condensing greenhouse gases and aerosols were zeroed out, and the global climate model was run forward in time to see what would happen to the greenhouse effect.
Without the sustaining support by the non-condensing greenhouse gases, Earth's greenhouse effect collapsed as water vapor quickly precipitated from the atmosphere, plunging the model Earth into an icebound state -- a clear demonstration that water vapor, although contributing 50 percent of the total greenhouse warming, acts as a feedback process, and as such, cannot by itself uphold the Earth's greenhouse effect.
"Our climate modeling simulation should be viewed as an experiment in atmospheric physics, illustrating a cause and effect problem which allowed us to gain a better understanding of the working mechanics of Earth's greenhouse effect, and enabled us to demonstrate the direct relationship that exists between rising atmospheric carbon dioxide and rising global temperature," Lacis said.
The study ties in to the geologic record in which carbon dioxide levels have oscillated between approximately 180 parts per million during ice ages, and about 280 parts per million during warmer interglacial periods. To provide perspective to the nearly 1 C (1.8 F) increase in global temperature over the past century, it is estimated that the global mean temperature difference between the extremes of the ice age and interglacial periods is only about 5 C (9 F).
"When carbon dioxide increases, more water vapor returns to the atmosphere. This is what helped to melt the glaciers that once covered New York City," said co-author David Rind, of NASA's Goddard Institute for Space Studies. "Today we are in uncharted territory as carbon dioxide approaches 390 parts per million in what has been referred to as the 'superinterglacial.'"
"The bottom line is that atmospheric carbon dioxide acts as a thermostat in regulating the temperature of Earth," Lacis said. "The Intergovernmental Panel on Climate Change has fully documented the fact that industrial activity is responsible for the rapidly increasing levels of atmospheric carbon dioxide and other greenhouse gases. It is not surprising then that global warming can be linked directly to the observed increase in atmospheric carbon dioxide and to human industrial activity in general."
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Written by: Kathryn Hansen NASA's Earth Science News Team
http://www.nasa.gov/topics/earth/features/co2-temperature.html
Unchartered ping.
Don’t know if Kathryn Hansen is related to James Hansen. Tried web searches without result.
Yeah! I’m gonna believe this. God screwed up when he put plants and trees that produce C02 in our world.
“a new atmosphere-ocean climate modeling study”
Garbage in, garbage out.
>Garbage in, garbage out.
Exactly. All those computer models make the fundamental assumption that CO2 causes the fluctuation of levels of water vapor which is the really effective greenhouse gas. It’s pretty much a guaranteed case of getting the results you have created the model to generate. In fact no other outcome can be derived from the models owing to the assumptions built in. One can easily note that every single one of the modeling studies predicts increases in temperature, only varying in degree. None of them ever predict dips in temperature (which is what is really seen).
Garbage in - garbage out. Findings of a defective computer climate model, from what I’ve seen none have projected a track record that resembles the recent “global warming” history - they’ve so far failed at modeling the earth’s climate, by far.
ABSTRACT:
"Carbon dioxide in the atmosphere [historically] is the product of oceanic respiration due to the well-known but under-appreciated solubility pump. Carbon dioxide rises out of warm ocean waters where it is added to the atmosphere. There it is mixed with residual and accidental CO2, and circulated, to be absorbed into the sink of the cold ocean waters. Next the thermohaline circulation carries the CO2-rich sea water deep into the ocean. A millennium later it appears at the surface in warm waters, saturated by lower pressure and higher temperature, to be exhausted back into the atmosphere. Throughout the past 420 millennia, comprising four interglacial periods, the Vostok record of atmospheric carbon dioxide concentration is imprinted with, and fully characterized by, the physics of the solubility of CO2 in water, along with the lag in the deep ocean circulation.
Notwithstanding that carbon dioxide is a greenhouse gas, atmospheric carbon dioxide has neither caused nor amplified global temperature increases. Increased carbon dioxide has been an effect of global warming, not a cause [historically -etl]. Technically, carbon dioxide is a lagging proxy for ocean temperatures. When global temperature, and along with it, ocean temperature rises, the physics of solubility causes atmospheric CO2 to increase.
If increases in carbon dioxide, or any other greenhouse gas, could have in turn raised global temperatures, the positive feedback would have been catastrophic. While the conditions for such a catastrophe were present in the Vostok record from natural causes, the runaway event did not occur. Carbon dioxide does not accumulate in the atmosphere."
http://www.rocketscientistsjournal.com/2006/10/co2_acquittal.html
This is from the (former) space agency that now exists with the number one mission of making muslims feel good about their contributions to math and science.
Isn't Hansen and the rest of NASA now pretty much tied up with Islamic outreach? They really do the Muslim thing much better than climate science.
More lies from the leftists that lie for satan.
LLS
CO2 level changes FOLLOW temperature changes, not the other way around. That was one of the big farces of AlGore’s movie.
” ... God screwed up when he put plants and trees that produce C02 in our world. ... “
I thought it was the other way around, plants and trees consume C02, and emit oxygen, while animals consume oxygen and emit C02. Just asking.
The chatter that humans can control the temperature comes from an EU campaign,
http://ec.europa.eu/environment/climat/campaign/
“The notion of low pre-industrial CO2 atmospheric level, based on such poor knowledge, became a widely accepted Holy Grail of climate warming models. The modelers ignored the evidence from direct measurements of CO2 in atmospheric air indicating that in 19th century its average concentration was 335 ppmv.”
Anthropogenic Co2 is .1% of greenhouse gas, this “research” is totally preposterous. GG keeps us from freezing to death.
Just as soon as the model explains how human activity increased the surface temperature on Mars, I’ll be ready to believe it, or begins to account for the sunspot cycle...
Even modeling software must be tested and proven. Until it is, no software can be trusted -- especially modeling software. Until they can show that their model can reproduce current conditions from a starting point in the past, their results cannot be taken seriously.
Nonsense. If this were true, we would have had a temperature runaway (freezing or boiling), hundreds of millions of years ago, and the Earth would not be livable now.
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