16. This diagram sows the highly variable nature of
over 16,000 years, with detail for the last 2000 years. Depending on
the period of the earth’s history that is chosen, the climate will
either be warming or cooling. Choosing whether earth is warming or
cooling is simply a matter of picking end points.
Davis, John C., and Geoffrey Bohling, 2001, The Search for Patterns in
Ice-Core Temperature Curves: in Gerhard, Lee C., William E. Harrison,
and Bernold M. Hanson, eds.,2001, Geological Perspectives of Global
Climate Change: American Association of Petroleum Geologists Studies in
Geology #47, Tulsa, OK, p. 213-230.