ESS101C
Prof. Jin-Yi Yu
Deglacial and Millenial Scales
qClimate changes of these scales in the past several tens of thousands of years occurred within the time span of recorded human civilization.
qThese change can be resolved by 14C-dated records.
qThe major boundary conditions that have driven climate changes during the last 21,000 years have been the changes in:
q      (1) size of ice sheet
q      (2) seasonal insolation
q      (3) level of greenhouse gases in the atmosphere.
(from Earth’s Climate: Past and Future)