SSDD
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- Nov 6, 2012
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IanC said:There are 3 main points to AGW.
The first is not really necessary except to alarm people. Has the Earth warmed? Definitely yes since the Little Ice Age. The amount is still contentious. Funny how the records supported a coming ice age in the seventies but since then have been manipulated into supporting GW. Did the scientists 'push' the numbers around to advance the calamity-of-the-day back then? Are they doing the same but in a different direction now? I think there is always pressure to support the current consensus.
More importantly, is the CO2 level rising? Does anyone doubt this? Does anyone doubt that mankind's use of fossil fuels has contributed?
The first two points are overwhelmingly supported in direction, if not necessarily in quantity, by evidence. Which I am not going to present BTW.
No one is arguing those points....but those points, don't even amount to even a small amount of evidence supporting the anthropogenic component of the AGW hypothesis.
IanC said:The third and most important point is 'does CO2 have a warming influence?' Water in its various forms has a vast influence but can we separate out CO2's effect? It's ability to absorb certain bands of IR is beyond doubt as spectography proves. The surface radiates part of its power in those bands as is proven by Planck curves for temperature. Therefore we know CO2 must have an effect because those bands do not radiate out to space at the speed of light. QED. CO2 has an effect on the energy level of the atmosphere and hence the temperature. Land surface temperature is measured at ~ one metre so it is really the atmosphere, and so 30% of the globe is necessarily affected.
And there is where assumption takes over for observed, measured, quantified evidence...you are talking about phenomena which should be observable, measurable, and quantifiable...but not the first bit of data exists.. Absorption and emission do not equal warming...there is absolutely no evidence proving that assumption...there, is in fact, no evidence of the observed, measured, quantified variety proving any of the assumptions upon which the A in AGW is based.
IanC said:I can't see how anyone can dispute this mechanism, and legitimate skeptics don't. My disagreement is with the quantities and conclusions that consensus climate science reports as a certainty.
It is a physical phenomenon that supposedly causes a physical change in the temperature of the atmosphere at ambient temperature, and yet, it can not be measured at ambient temperature...it is an artifact of a mathematical model...unobserved, unmeasured, unquantified...and that is the bottom line.