Are changes in the emission spectrum of the earth correlated with increasing greenhouse gas concentrations?

Question

Is this a direct measurement of the greenhouse effect and the magnitude of global warming?

Answer 1

There was a study on this at around 2001 and some considered it the "smoking gun" of a CO2 induced climate change. The problem was that the changes due to CO2 were so small that they were well within the margin of instrument error--most of the change in outgoing radiation was due to water vapor, methane, and CFCs. I haven't seen a more up to date analysis. I'll have to dig up the paper and get back to you.

Edit:

Yes, the Harries study, that is the paper I was talking about:

http://www.ncbi.nlm.nih.gov/pubmed/11268...

The things I mentioned are the reasons why it didn't get more coverage than it did. Not exactly the "smoking gun" of AGW.

Answer 2

A SURVEY WAS TAKEN BY 31,000 SCIENTISTS AND THEY ALL SAY GLOBAL WARMING WAS'NT CAUSED BY MAN.

Answer 3

This is new to me.  But the changes in our atmosphere in the past 200 years would change the spectrum.  But there is no way to compare it because it was not recorded pre-industrialization.