Publicado em 23/01/2012, às12:54
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Their statistical ayniasls can't say whether the current trend is expected to increase or decrease.And no, the result is not a definite clean signal the result has a slope of ~1.4 C/century. Thus, one might conclude (perhaps prematurely, but perhaps justifiably too) that the three signals covered remove all the high-frequency natural variables of major significance, one cannot say anything about long-term natural variations that are longer than about 1/2 of the ~30 year sample analyzed in that paper. Thus, the odds of that can't really be computed with that sort of data set.So while I agree with your conclusion that man has a significant impact on the current warming trend, I disagree with your conclusion that the Foster paper completely eliminates natural variability as a cause.As for your request for a list of other components of natural variability, that's a red herring argument. One doesn't have to generate a list in order to show that the possibility hasn't been eliminated.-Scott