Theory 75/Glacial cycle/Termination phase
Termination Is a Melt Threshold
The claim
Deglaciation runs to completion once the ratio of melt to accumulation exceeds one by enough to survive a full year, so the end is abrupt.
01Mechanism
Ablation feeds on itself through albedo and elevation feedbacks.
02Prediction
Termination should be faster than onset.
03Refutation
Symmetric onset and termination would remove the feedback.