In physics, this phenomenon is known as “jerk”, representing the rate of change of acceleration. Its presence is a hallmark of systems undergoing rapid nonlinear transitions, where acceleration itself is increasing. In the context of climate, this indicates that the Earth system is approaching nonlinear instability. Such behavior raises a significant probability that the climate could enter singularity-like dynamics within the next decade or two, in which small perturbations trigger extreme, system-wide responses.