To better understand the effects of the ocean on global climate and weather, scientists from NOAA’s Pacific Marine Environmental Laboratory, or PMEL, deployed an Ocean Climate Station mooring - an anchored buoy - on the edge of the warm Agulhas Return Current (ARC) southeast of South Africa. Although there is an array of climate buoys positioned in the tropics, this is one of only two deep ocean climate buoys positioned below the Tropic of Capricorn; the other is located south of Australia. The buoy is part of NOAA's climate observation and monitoring efforts.