Tracking North Atlantic Currents

From left: WHOI engineer Andrew Davies, bosun Pete Liarkos, and WHOI engineers John Kemp and Brian Hogue recover a mooring aboard the research vessel Neil Armstrong southeast of Greenland. The mooring is one of 54 being used to measure the strength of the Atlantic Meridional Overturning Circulation (AMOC), a key ocean current system that affects climate in the North Atlantic region. The research is part of OSNAP, an international program that will provide unprecedented, year-round observations of the AMOC in the high-latitude North Atlantic, where warm waters arriving via the Gulf Stream release heat to the atmosphere in winter. (Photo courtesy of Isabela Le Bras, Scripps Institution of Oceanography)