When ice or snow melts, exposing darker surfaces like open ocean water (albedo ~0.03), what powerful cycle is triggered?

Answer

A positive feedback loop that accelerates warming

The shift from highly reflective ice to dark, absorptive water leads to increased energy absorption, which causes more melting, exposing more dark surface, thus accelerating warming in a positive feedback cycle.

When ice or snow melts, exposing darker surfaces like open ocean water (albedo ~0.03), what powerful cycle is triggered?
Earthsurfacereflectivity