“2,000 years ago, temperatures were much higher than they are now”

Image 68

18 Oct 1986, Page 12 – at Newspapers.com

About stevengoddard

Just having fun
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11 Responses to “2,000 years ago, temperatures were much higher than they are now”

  1. sfx2020 says:

    This one is easy to hand wave away, because “since then it warmed a lot and that is no longer true”. Same for the very old tree records from the US, which show the history of climate for over 2000 years.

  2. Jeff says:

    I really don’t think one can use tree rings as an accurate history of temperatures. That’s silly.

  3. sfx2020 says:

    http://hyzercreek.com/treering.htm

    The other factor for tree growth, is rainfall. But, there is also the matter of CO2.

    http://www.sciencedaily.com/releases/2010/02/100201171641.htm

    • David A says:

      Rainfall, soil conditions, competion, disease,etc. Trees are not thermometers.

      • But regarding the tree I used there, the only thing that mattered was sunlight.

        • darrylb says:

          Michael Mann used bristlecone pines, a highly long lived, and contorted tree, from high and arid regions of the US Southwest.
          He knew it was subject in growth to rainfall conditions.
          Furthermore, The bristlecones were a small and controversial subset of many proxies used.
          Even though no other proxies showed the hockey stick shape; the method used, principal components, allowed the single errant bristlecone record of over a thousand years to be the predominant shape of the hockeystick.
          Beyond that, when the graph did not show a recent warming, they truncated it and spliced in a dubious current temperature record which our host as shown to be completely suspect.

  4. Billy Liar says:

    Well, surprisingly, given the controversial nature of his 1986 study, he’s still got a job:

    http://personal.cricyt.edu.ar/ricardo/

    • darrylb says:

      I have seen four studies showing 1,000 year cycles which would coincide with the roman warm period and the medieval warm period.
      Until recent junk, records had shown them to be warmer than today.

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