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Originally Posted by fragment
We do know that Hansen's 1988 model tends to run a bit hot. Still, characterising scenario A as "emissions as actually occurred" is inaccurate. In that scenario CO2 is within a couple ppm of actual, but other greenhouse gas emissions are way off. See here. |
All of this is par for the course and just as to be expected. Scientists are not omniscient agents. Their models will undoubtedly be wrong in some important details. How could it be otherwise? What matters is the big picture. In the big picture, the world continues to warm broadly consistent with predictions made a quarter century ago.