Pleistocene Climate: Deterministic or Stochastic?

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Science  13 Apr 1979:
Vol. 204, Issue 4389, pp. 171-173
DOI: 10.1126/science.204.4389.171


Application of a simple linear model to the earth's ice volume record of the past 730,000 years indicates that although forcing by variations in the earth's orbital parameters of tilt and precession is real, it is small (less than 25 percent of the variance in the record). No relationship with the eccentricity is observed. This indicates that the Pleistocene glacial variations are largely stochastic in nature.