Joseph K Ansong¹, Brian K Arbic², Dimitris Menemenlis³, Alan J Wallcraft⁴, Romain Bourdalle-Badie⁵, Jerome Chanut⁶, Frederic Briol⁷, Michael Schindelegger⁸, Richard Ray⁹, Eric P. Chassignet¹⁰, Robert Hallberg¹¹, Loren Carrère¹², Gérald Dibarboure¹³, Nicolas Picot¹³, Maarten C Buijsman¹⁴, James G Richman¹⁵, Jay F Shriver¹⁶, Christopher N Hill¹⁷, Matthew R Mazloff¹⁸, Rui M Ponte¹⁹, Ariane Koch-Larrouy²⁰, Florent Lyard²⁰ and An T Nguyen²¹, (1)University of Ghana, Department of Mathematics, Accra, Ghana, (2)University of Michigan, Earth and Environmental Sciences, Ann Arbor, MI, United States, (3)NASA Jet Propulsion Laboratory, Pasadena, CA, United States, (4)Florida State University, Center for Ocean-Atmospheric Prediction Studies, Tallahassee, FL, United States, (5)Mercator Ocean international, Ramonville Saint-Agne, France, (6)Mercator Ocean International, Ramonville Saint-Agne, France, (7)Collecte Localisation Satellites, Ramonville-Saint-Agne, France, (8)University of Bonn, Institute of Geodesy and Geoinformation, Bonn, Germany, (9)NASA Goddard Space Flight Center, Geodesy & Geophysics Lab, Greenbelt, MD, United States, (10)Center for Ocean-Atmospheric Prediction Studies, Florida State University, Tallahassee, FL, United States, (11)NOAA Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States, (12)CLS, Ramonville Saint-Agne, France, (13)CNES French National Center for Space Studies, Toulouse Cedex 09, France, (14)University of Southern Mississippi, Stennis Space Center, MS, United States, (15)Naval Research Lab Stennis Space Center, Stennis Space Center, MS, United States, (16)Naval Research Laboratory, Stennis Space Center, Stennis Space Center, MS, United States, (17)MIT, MA, (18)SIO, La Jolla, CA, United States, (19)Atmospheric and Environmental Research, Lexington, MA, United States, (20)LEGOS, Toulouse, France, (21)University of Texas at Austin, Institute of Computational Engineering and Sciences, Austin, TX, United States