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Originally posted by Byrd
Originally posted by TheRedneck
Carbon dioxide molecules are not spread out in a film like paint; rather they are distributed more or less randomly among the troposphere.
Not really. There's some interesting patterns. geology.com...
Bear in mind that I am showing the potential increase in energy retention based only on the increase in carbon dioxide since pre-industrial times.
Anthropogenic factors, though, aren't ONLY carbon dioxide. There's also methane (large factory farms, drilling operations) which has increased dramatically in the last 300 years.
Methane
And there's also deforestation:
www.moorlandschool.co.uk...
(and by the way, changing prairies into farmland. Crops and grass for animals tend to sequester less CO2 than prairie switchgrass.)
www.netl.doe.gov...
heat islands:
www.epa.gov...
en.wikipedia.org...
Desertification of formerly green lands (and subsequent dust storms) :
en.wikipedia.org...
the end results are the same: carbon dioxide cannot be causing the warming trends of the last few decades. To discount that statement would require a discrepancy of 500% in either the energy available or the energy needed, or both combined.
It's a complex picture, and CO2 isn't the only gas. Using only CO2 and ignoring things like methane, deforestation, desertification, heat islands (and other heat sources like factories and oil processing plants) and so forth will not give you the accurate picture you desire:
en.wikipedia.org...
You need to add those into your calculations... and you probably should use calculus since you're looking at multiple values that change over time (you can do it with multiple calculations but that's tiresome and leads to the accusation you've cherry picked data.)
Originally posted by TheRedneck
reply to post by mikelee
Are you saying you discount it because of the conclusion and not because of the calculations?
TheRedneck
No I mean to say that the upper atmosphere changes the wavelength of certain incoming radiations. Either way, it is of no real consequence as you say you are ony making a general statement. Perhaps you should make that clear. By giving calculations that have some accuracies down to the 10x10^-3 you are suggesting accuracy via the very nature of your proposed calcs.
The area of a circle is less than the area of a half of a sphere...
No. there is much more attenuation through the poles than the equator because of the angle of incidence.
But the upper atmosphere such as the stratosphere contains mostly 02 and 03, which absorbs smaller wavelengths very well. You used total solar incoming radiation in your calculations, but only considered partial reasons for absorption.
Drastic changes of atmospheric content wrt not only co2 but also water vapor, density, atmospheric heights and so on can happen very rapidly over very short distances, and it is these boundaries that give us wind and weather and so on.
You hope. But you cannot be certain. And that is not the type of wager that a scientific individual looking to build credibility and support a hypothesis should be taking.
What type of heating method are you considering FOR your anthropogenic co2? The gas itself can be heated by several different mechanisms.
Some parts of the troposphere are behaving differently than others based upon the amount of mixing, radiation, and source region that the air mass is in place over. This is another dangerous generalization that threatens the credibility of your calculations.
But to your target audience it may appear as if you are making a hypothesis based upon scientific data and analyzed with accuracy and presented to them for review and comment.
Originally posted by TheRedneck
reply to post by truthquest
A carbon dioxide molecule is invisible to visible light; we cannot see it. But it is not completely invisible to certain wavelengths of light. There are actually two areas of the spectrum (absorption bands) that CO2 is more translucent to than invisible. both are located in long-wavelength radiation (heat radiation).
The theory is this: sunlight can reach the earth just fine, since it is mostly shorter wavelengths and is not affected by CO2. But when the earth absorbs short wavelength light, it begins to emit longer-wavelength heat. That heat would simply escape out into space if not for the greenhouse gases in our atmosphere intercepting them. If a ray of heat strikes a greenhouse gas, it causes that gas to heat up. Then, when the gas molecule cools back down, it releases that heat again, this time in a random direction. Sometimes the emitted heat will go on into space, but other times it will head back to earth to be absorbed and re-emitted by the ground again.