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Latest pic of IPCC (various versions) vs. real world observations

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  • Latest pic of IPCC (various versions) vs. real world observations



    This is worse than it looks - keep in mind that the later the IPCC version, the longer the period of time where the models in question are 'tuned' to mimic past real world observations.

    Thus the IPCC 2007 output differs from the IPCC 1990 output in that the intervening 17 years of data is used to additionally tune.

    Despite that, the real world continues to diverge further away from the more recent projections.

    Note also that the real world data used is GISS - which shows temperatures significantly warmer than the satellite data sets.
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