Therefore, the harmless temperature increment from doubled CO 2 concentration is a probable maximum rise in mean global temperature from anthropogenic CO 2 greenhouse effect. A graph about radiative forcing of the 1994 IPCC report is shown in Fig.4. As the left residual is not cancelled, here obviously water vapor overlap has hardly been considered, contrary to the statement in the note on p.174 and the approach of H. Fischer . R.D. Chess et al. The IPCC residuals were calculated with radiative transfer equations, using the standard narrow band code of P. Shine 1991 - both not been published by IPCC and obviously available within the 'community' only.
Residuals show a broad gap inbetween when only absorption is considered.
The linestrengths in Fig.4b are not explained and easily misinterpreted. The green residual curve for additional absorption for CO 2 doubling within the very thin 2.5 m layer looks similar to what IPCC had calculated for the forcing at tropopause level. The warming effect from radiative CO 2 forcing occurs mostly near ground. Ch.6 p.6, line 52-54 still says that surface and troposphere are closely coupled , the thermal structure being determined by a nominal lapse rate , all thus behaving as a single thermodynamical system . Because of the increasing lapse rate satellites measure a mix of cooling and warming and thus can principally not replicate the ground temperature trend.