Detecting and forecasting tipping points from sample variance alone

Area of Science:

• Complex Systems Science
• Statistical Physics
• Dynamical Systems Theory

Background:

• Anticipating tipping points in complex systems is crucial but challenging.
• Traditional early warning signals (EWSs) have limitations in reliability and timing prediction.
• Existing methods struggle to accurately forecast bifurcation timing.

Purpose of the Study:

• Introduce TIPMOC (TIpping via Power-law fits and MOdel Comparison), a novel parametric framework.
• To statistically detect approaching bifurcations and estimate their future location using sample variance.
• To enhance the interpretability and practical utility of classical EWSs for forecasting regime shifts.

Main Methods:

• TIPMOC monitors system variance as a control parameter changes.
• It statistically adjudicates between linear and power-law divergence.
• The framework forecasts tipping points when power-law divergence is favored.

Main Results:

• TIPMOC demonstrates robustness and accuracy in detecting bifurcations.
• The method shows low false positive rates, even with noise and uneven sampling.
• While detection is accurate, timing prediction accuracy is limited.

Conclusions:

• TIPMOC enhances classical EWSs for forecasting regime shifts.
• It serves as a transparent add-on or stand-alone statistical tool.
• The framework improves the practical utility of early warning signals for complex systems.