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The direct influence of cosmic rays on cloud albedo is much harder to put in context. If it has operated alongside GHGs, but there were no climate feedbacks, its effect on the term containing ΔG must have exceeded that of the term containing ΔA by the total 2.46 W m−2 attributed to feedbacks.
What is certain is that the uncertainties and lack of homogeneity in long datasets is a real problem for the evaluation of any such effect (i.e. for quantifying its contribution or finding if it exists at all).
Men ontkent het niet, maar met de huidige theorie van forcing, zegt men het effect niet logisch te achten of te kunnen vaststellen. Dat is wat anders dan de invalshoek van Svensmark, die het veel serieuzer neemt.
Het is heel duidelijk dat àls er een effect is, die blijkbaar onmeetbaar klein is. GHG's blijven majeur.
Hoofdstuk negen opent ook met een zonneklare conclusie: "The recent solar minimum shows that the trends to lower TSI and greater cosmic ray fluxes identified by Lockwood & Fröhlich (2007) have continued and these would be, if anything, a cause of lower temperatures on Earth. It is not surprising, therefore, that the GMAST record has been scrutinized for a matching decline."
Die er dus immers niet is.
RR
