ESS101C
Prof. Jin-Yi Yu
Climate Change During the Last Deglaciation
(between 17,000 and 6,000 years ago)
qDuring the deglaciation interval between 17,000 and 6,000 years ago, climate changes were driven by rising summer insolation and by increased concentrations of CO2 in the atmosphere.
qBy 10,000 years ago, the angle of tilt of Earth’s axis had reached a maximum at  the same time that Earth’s precessional motion moved it closest to the Sun on June 21. These combined orbital effects produced a summer insolation maximum at all latitudes of the northern hemisphere.
qAs the ice sheets shrank, their ability to influence climate diminished.
(from Earth’s Climate: Past and Future)