Arctic's Positive Feedback Loop

This to me is the simplest way to illustrate what is happening in the Arctic. The polar ice cap reflects the sun's energy back into space. But there is now less older ice and more open water in the melt season (darker, absorbs energy as heat). More new ice forms in freezing season. It replaces older ice but is less thick. Breaks up easier in summer, more light penetration, more heat....feeds on itself....