Jovial Monk
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For those who don’t want to admit CO2 is a climate driver consider this:
1. A cycle of major ice ages and interglacials started 800,000 years ago. The cycle is driven by the Milankovitch Cycle which includes perturbations to the earths orbit, inclination, precession of the equinoxes etc. This would have been happening since the solar system established but the ice ages didn’t follow until the drop in CO2.
2. CO2 is a trace gas! Well, in terms of composition of the atmosphere that is true, CO2 is 0.0424% of gases in the atmosphere. Let us consider the three main gases, nitrogen, oxygen and argon. These absorb some of the visible light that reaches us from the sun, moderating the warmth on the surface. These three gases, N2, O2, Ar do NOT absorb infrared, IR, particularly the far IR. CO2 DOES absorb IR, spreading the energy from doing so to, mainly, N2 molecules. These move faster—the gas is warmer.
3. As IR is absorbed and turned into heat in the troposphere there is less heat reaching the stratosphere which cools. The GHGs, incl traces of water vapor, emit IR to space, cooling the atmosphere—but as the stratosphere cools less emissions happen and warming continues.
4. Look at the temperature series—they all show the rise in temperature including the series from Berkeley Earth Sciences Team who graphed using the raw, unhomogenised data and got a strikingly similar graph to the other series.
If you don’t want to admit we are warming the planet you have to show what IS warming the planet because warming it is, both terrestrial and satellite series show that.
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