North Atlantic's 'cold blob' may contain climate nuance

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Researchers say the North Atlantic’s so-called cold blob may require a more nuanced interpretation of its relationship to a major ocean current. The region south and southeast of Greenland has cooled by as much as 1.8°F over the past century while other ocean waters warmed.

Climate observers have long tied the strength of a major ocean current to water temperatures in the so-called "cold blob" in the North Atlantic Ocean. The 965,000-square-mile (2.5 million square kilometers) area south and southeast of Greenland cooled by as much as 1.8 degrees Fahrenheit over the past century as other ocean waters warmed.