CNN CNN Newsroom Live October 1, 2015 06:24:00
Are well below normal. in fact, some areas are record-breaking. the ocean acts as a huge conveyer belt. salty warm water from the south travels north. as it does so, it cools, and it becomes so dense it sinks and mixes with the cooler water deeper in the ocean. this circulation is constant. it helps maintain balance in the ocean, but if too much fresh water is added, the water is too buoyant to sink. that can either slow the circulation or grind it to a halt. that's exactly what's happening in the northern atlantic. the greenland ice sheet is melting and dumping massive amounts of fresh water ...
Source: archive.org