author={Richard B. Alley and Peter U. Clark},
  journal={Annual Review of Earth and Planetary Sciences},
  • R. AlleyP. Clark
  • Published 1 May 1999
  • Environmental Science
  • Annual Review of Earth and Planetary Sciences
Orbitally induced increase in northern summer insolation after growth of a large ice sheet triggered deglaciation and associated global warming. Ice-albedo, sealevel, and greenhouse-gas feedbacks, together with tropical warming from weakening winds in response to polar amplification of warming, caused regionalto-global (near-) synchronization of deglaciation. Effects were larger at orbital rather than millennial frequencies because ice sheets and carbon dioxide vary slowly. Ice-sheet‐linked… 

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