StarDestroyer.Net BBS

Ooh, on SB? Can I have a link?

Enjoy.
I particularly like the one where the guy goes "durr, natural CO2 sources are much more than those released by humans". Because, you know, it's not like artificial emissions might be shifting a natural equilibrium or anything.

Ah yes incressing the CO2 in the stratosphere is going to cause ruin.

But at stratosphere layer the greenhouse effect is mostly CO2, rather than water vapor already.

Although you will do well to remember that the stratoshphere has almost no impact on the greenhouse effect as observed in the troposphere. Why you ask? Because the long waves radiated by the earth have mostly been trapped in the troposphere already, very very little can pass to the stratosphere, and once it's their it has little effect on the already rather cool top layer of the troposphere. Hope that -75 doesn't get to warm from a few hundredth of a degree of warming caused by a quading of CO2.

The most important CO2 absorption lines did not lie exactly on top of water vapor lines. Instead of two overlapping bands, there were two sets of narrow lines with spaces for radiation to slip through. So even if water vapor in the lower layers of the atmosphere did entirely block any radiation that could have been absorbed by CO2, that would not keep the gas from making a difference in the rarified and frigid upper layers.

Moving on they are going on about absorption in the stratosphere, mesosphere and thermosphere. Which I freely admit can absorb more energy in the 2.5 5 and 20 nm range. (CO2's key bands).

But those layers have FUCK ALL to go with the temperature down in the troposphere.

So what you have with that link is mostly correct. The atmosphere can absorb more energy in CO2's bands, in total it isn't saturated. Some areas have less water than others and can draw in more energy.

BUT where it can absorb more energy it will have no effect on the average temperature in the troposphere.

Even if we just agree with what the link says, a quadrupling of the CO2 which is what it's working on would be rather hard to achieve and would have very little effect on the warming. Something like 1.3C - 2.7C on clear water free skys.

In the rather wet earth, the effect for a 4 times incress would be something between 0.2C and 1.1C.

(oh and a 4 times incress in CO2 would incress harvest yeilds by something near to 30%)

He's now moved on to claiming the planet is colder now than it was ten years ago. Because, you know, there can never be blips in a general upward data curve, especially with something as complex as the weather.

When I hit him with a ton of before and after pics of glaciers melting he also claims they were melting before that, never mind I'd already mentioned that the rate of melt had accelerated dramatically in the last few tens of years, which was outright stated in the articles I linked to.