Originally posted by ba1025
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What I haven't seen is any actual empirical evidence that anthropogenic CO2 is a forcer of global temperature increase. What I have seen is a single graph by Mann et al in the original IPCC report as proof that there has been an escalation in the background rise (yes background rise) of global temperatures.
I can go into the reasons for why Mann et al is now regarded as a big pile of smelly poo and has been dropped from the IPCC reports if you like, but the only other thing I've seen from the IPCC are a whole lot of models based on Mann (i.e. using his data as predictor) that have thus far completely failed to predict the temperature fluctuations around the globe. Plus an awful lot of political statements that bear no relation to any of the few scientific papers they've actually presented.
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