...a pattern of warming in the ocean’s long-distance currents has now been identified near Australia, Japan, Africa, and North America.

Over all the data sets, which comprise the Gulf Stream, Kurshio Current, East Australian Current, Brazil Current, and Aguhlas Current, the average warming over a century has been around 1.2°C, while the global mean rise in temperatures is 0.62°C for the same period.

The scale of the change, at two to three times global temperature rises, is one thing that surprised McPhaden,...

Ocean currents emerge as climate change hot-spotAs they warm, they ...