Ice Age Ended Abruptly Across Multiple Systems

He examines evidence showing the end of the last ice age wasn't gradual at all. Surface ocean temperatures in the Atlantic jumped several degrees Celsius in what appears to be a geologically instantaneous shift. Deep sea sedimentation rates in the Equatorial Atlantic dropped sharply at the same time. Bottom waters in the Curiaco Trench suddenly stagnated, and the Pluvial Lakes of the Great Basin shrank rapidly from maximum volume to near their current size. What stands out is that these changes happened simultaneously across geographically isolated systems, from ocean basins to landlocked lakes. This kind of synchronous, abrupt warming at the close of the Wisconsin glaciation challenges the conventional view of slow, incremental climate transitions.