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by gus_massa
3087 days ago
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> you need to be able to explain how a massive change in CO2 and other greenhouse gasses in the atmosphere will not result in warming. It's not so easy to be sure about the warning produced by the CO2 because a very big part is the "Climate Sensibility". And there is no straightforward way to calculate the climate sensibility, you must use climate models. From https://en.wikipedia.org/wiki/Climate_sensitivity#Radiative_... > CO2 climate sensitivity has a component directly due to radiative forcing by CO2, and a further contribution arising from climate feedbacks, both positive and negative. "Without any feedbacks, a doubling of CO2 (which amounts to a forcing of 3.7 W/m2) would result in 1 °C global warming, which is easy to calculate and is undisputed. The remaining uncertainty is due entirely to feedbacks in the system, namely, the water vapor feedback, the ice-albedo feedback, the cloud feedback, and the lapse rate feedback";[14] addition of these feedbacks leads to a value of the sensitivity to CO2 doubling of approximately 3 °C ± 1.5 °C, which corresponds to a value of λ of 0.8 K/(W/m2). |
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We're going to get warmer, to find out how much warmer, you need more complex models.