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Josh Turner (NASHVILLE)

(https://)Climate Change (IPCC)3, there is a “scientific consensus” [22], that the relevant mechanismis the atmospheric greenhouse effect, a mechanism heavily relying on the assumption thatradiative heat transfer clearly dominates over the other forms of heat transfer such as thermalconductivity, convection, condensation et cetera [23–30].In all past IPCC reports and other such scientific summaries the following point evocatedin Ref. [24], p. 5, is central to the discussion:“One of the most important factors is the greenhouse effect; a simplified ex-planation of which is as follows. Short-wave solar radiation can pass through theclear atmosphere relatively unimpeded. But long-wave terrestrial radiation emit-ted by the warm surface of the Earth is partially absorbed and then re-emittedby a number of trace gases in the cooler atmosphere above. Since, on average,the outgoing long-wave radiation balances the incoming solar radiation, both theatmosphere and the surface will be warmer than they would be without the green-house gases . . . The greenhouse effect is real; it is a well understood effect, basedon established scientific principles.”To make things more precise, supposedly, the notion of radiative forcing was introduced bythe IPCC and related to the assumption of radiative equilibrium. In Ref. [27], pp. 7-6, onefinds the statement:“A change in average net radiation at the top of the troposphere (known as thetropopause), because of a change in either solar or infrared radiation, is defined forthe purpose of this report as a radiative forcing. A radiative forcing perturbs thebalance between incoming and outgoing radiation. Over time climate responds tothe perturbation to re-establish the radiative balance. A positive radiative forcingtends on average to warm the surface; a negative radiative forcing on average tendsto cool the surface. As defined here, the incoming solar radiation is not considereda radiative forcing, but a change in the amount of incoming solar radiation wouldbe a radiative forcing . . . For example, an increase in atmospheric CO2concentra-tion leads to a reduction in outgoing infrared radiation and a positive radiativeforcing.”However, in general “scientific consensus” is not related whatsoever to scientific truth ascountless examples in history have shown. “Consensus” is a political term, not a scientific3The IPCC was created in 1988 by the World Meteorological Organization (WHO) and the United

Explique pourquoi ,LA resolution de S.EQUATION se fait avec Les nombres complexes. Programme de 2em ET 1er scientific. Bons souvenirs ,(pour moi)??