Natural climate changes

Discussion in 'Earth Science' started by Andre, Mar 20, 2008.

  1. Andre Registered Senior Member

    Messages:
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    We think we know what happened during the ice ages. But do we? Two new studies to illustrate what incredible things natural climate changes can do:

    Kienast, F., P. Tarasov, L. Schirrmeister, G. Grosse, A.A. Andreev; 2008; Continental climate in the East Siberian Arctic during the last interglacial: Implications from palaeobotanical records. Global and Planetary Change 60 (2008) p.p. 535–562

    Note that the last Interglacial, the Sangamonian or Eemian was about 120,000 years ago. But rather unusual conditions for a present day, high arctic tundra.

    And as contrast:

    Dittmers, K., F. Niessen, R. Stein, 2008; Late Weichselian fluvial evolution on the southern Kara Sea Shelf, North Siberia, Global and Planetary Change 60 (2008) p.p. 327–350.

    In other words, during the coldest part of the last glacial period, the last glacial maximum, there was not a trace of an ice sheet, right in the middle of the area you would expect one.

    So with all these conflicting discoveries ongoing, how can we be so sure about the driving forces of climate changes? We don't know nothing yet.
     

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