Question

Looking at the heat circulation in the ocean, what might happen to it if large amounts of cold water are added in the Polar Regions as glaciers melt?

Answer 1

As it cools, it becomes more dense and, because cold water is more dense than warm water, it sinks to the deep ocean where it travels south again. ... The melting ice causes freshwater to be added to the seawater in the Arctic Ocean which flows into the North Atlantic. The added freshwater makes the seawater less dense.