Older Arctic Sea Ice Disappearing

The video explains the dynamics of Arctic ice, focusing on the thickness and age of ice. It describes how ice expands and contracts with the seasons, and how older ice moves and eventually melts in the North Atlantic. The Beaufort Sea plays a crucial role in ice aging, but recent years have seen less replenishment and more melting, transforming it from a nursery to a graveyard for older ice. The Arctic is now dominated by younger, thinner ice.

What factors have contributed to the reduction of older ice in the Arctic Ocean?

How has the composition of ice in the Arctic changed in recent years?