@BigLeRoy the earth was not created in 1881.
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Historical temperature reconstructions show hemispheric differences — Australian Antarctic DivisionThe Medieval Warm Period (950-1250AD) is apparent in the Northern Hemisphere reconstruction, while in the Southern Hemisphere there was an extended warm phase between 1200 and 1350. Both hemispheres then experienced a long-term cooling trend, with the peak of the Little Ice Age from 1594-1677. Since the 1970s both hemispheres have experienced synchronised warming extremes. Figure c shows simultaneous extreme periods in both hemispheres. Some of the model simulation results deviate from the reconstructions at times when external forcings (volcanic eruptions, solar radiation, greenhouse gases) were more extreme (d), as a result of the models’ over-emphasis on these forcings. The axis ‘fraction of ensemble members’ refers to the number of proxy records that show the warming or cooling trend. (First published in Nature Climate Change doi: 10.1038/NCLIMATE2174).
And the car acceleration point is probably even more irrelevant.
Last edited by RNG; 10th January 2017 at 11:09 AM.
From the link: The Intergovernmental Panel on Climate Change Third Assessment Report considered the timing and areas affected by the Little Ice Age suggested largely-independent regional climate changes rather than a globally-synchronous increased glaciation. At most, there was modest cooling of the Northern Hemisphere during the period.
Also from the link: Although the original designation of a Little Ice Age referred to reduced temperature of Europe and North America, there is some evidence of extended periods of cooling outside this region, but it is not clear whether they are related or independent events. Mann states:
While there is evidence that many other regions outside Europe exhibited periods of cooler conditions, expanded glaciation, and significantly altered climate conditions, the timing and nature of these variations are highly variable from region to region, and the notion of the Little Ice Age as a globally synchronous cold period has all but been dismissed.
P.S. I wish I had the exact dates for those cover stories in Time and Newsweek. I don't have that info on hand. Would have to go look them up....