Here’s a fascinating example of oscillating systems.
In this demonstration 15 independent cyclic systems with different periods begin in phase, then watch how the total system departs from being in phase to apparent chaos to split phases and so on.
Now consider this demonstration as a model for all the contributors, big and small, to Earth’s climate–certainly more than the 15 billiard balls depicted here. And put the balls on springs of varying elasticity (permitting varying periods). And then allow the balls to hit each other (adding the third dimension to their oscillation and…..energy transfer).
Try to model and predict that!