Angelique Melet, Mercator Ocean International, Scientific Directorate, Ramonville-Saint-Agne, United States, Rafael Almar, LEGOS, CNES, Toulouse, France, Mark A Hemer, CSIRO Marine and Atmospheric, Hobart, TAS, Australia, Goneri Le Cozannet, BRGM, Orléans, France, Benoit Meyssignac, Observatory Midi-Pyrenees, Toulouse, France and Peter Ruggiero, Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States