Global warming debunked: NASA report verifies CO2 actually cools atmosphere

[The Dark Enlightenment]

Originally Posted by Little-Acorn

These latest studies show that, with more CO2 the air winds up cooler overall, not warmer.

No. They don't.

[sanspeur]

Originally Posted by Little-Acorn

BTW, in case anyone is interested in the actual subject of the thread....

CO2 tends to retain the heat it gets when it gets warmed up. That's why they call it a "greenhouse gas".

But CO2 does something else as well. When sunlight hits the atmosphere, the CO2 tends to reflect some of the sunlight off, rather than letting it pass through.

As for "global warming"... keep in mind that most atmospheric energy comes from the sun, not from earth's internal warmth from radioactivity or whatever. But the sun does not heat up the air. The sun heats up the ground, and the warm ground heats the air.

Sounds like a trivial difference... but what happens to this warming when you put a bunch more CO2 in the air than you used to have? While that CO2 can retain more heat if it gets any from the ground... its reflective qualities keep more sunlight from hitting the ground in the first place. So with more CO2, more sunlight is reflected back into space and the ground doesn't warm up as much. So the air is warmed LESS.

So if the air has more CO2, will the air wind up warmer because the CO2 is trapping more heat? Or will the air get cooler because not as much sunlight warms the ground (and thus the air) in the first place?

These latest studies show that, with more CO2 the air winds up cooler overall, not warmer. The CO2 retaining more heat, has less effect than the CO2 reflecting sunlight back into space before it can warm the ground.

So the "Global Warming" fanatics' most fundamental argument, that increasing CO2 from buring oil, forests, etc. makes the atmosphere warmer, turns out to be false on its face.

We now return you to your discussions of satellites, arctic (while avoiding antarctic) ice, who is and is not paid by Exxon-Mobil, and other diversions irrelevant to the topic of the thread.

No, you have it all wrong...This is how CO2 warms the earth....The greenhouse effect occurs because greenhouse gases let sunlight (shortwave radiation) pass through the atmosphere. The earth absorbs sunlight, warms then reradiates heat (infrared or longwave radiation). The outgoing longwave radiation is absorbed by greenhouse gases in the atmosphere. This heats the atmosphere which in turn re-radiates longwave radiation in all directions. Some of it makes its way back to the surface of the earth. So with more carbon dioxide in the atmosphere, we expect to see less longwave radiation escaping to space at the wavelengths that carbon dioxide absorb. We also expect to see more infrared radiation returning back to Earth at these same wavelengths. How do we know more CO2 is causing warming?

The same thing happens when you leave your car in a sunny parking lot with the windows up. The solar energy is passing through the glass and is heating the cars interior. Whats really happening is the short wave infrared waves are going in and are turning into long wave infrared waves, which cannot escape....That is why it is called a green house effect.