Antarctic Bottom Waters Freshening at Unexpected Rate

Shift could disturb ocean circulation and hasten sea level rise, researchers say

In the cold depths along the sea floor, Antarctic Bottom Waters are part of a global circulatory system, supplying oxygen-, carbon- and nutrient-rich waters to the world's oceans.  Over the last decade, scientists have been monitoring changes in these waters.  But a new study suggests these changes are themselves shifting in unexpected ways, with potentially significant consequences for the ocean and climate.

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