Articles | Volume 20, issue 3
Research article
22 Mar 2024
Research article |  | 22 Mar 2024

Statistical precursor signals for Dansgaard–Oeschger cooling transitions

Takahito Mitsui and Niklas Boers

Data sets

Data, icesamples and software Centre for Ice and Climate

Model code and software

takahito321/Predictability-of-DO-cooling: Release Takahito Mitsui

Short summary
In general, the variance and short-lag autocorrelations of the fluctuations increase in a system approaching a critical transition. Using these indicators, we identify statistical precursor signals for the Dansgaard–Oeschger cooling events recorded in two climatic proxies of three Greenland ice core records. We then provide a dynamical systems theory that bridges the gap between observing statistical precursor signals and the physical precursor signs empirically known in paleoclimate research.