Yang Wang, University of Hamburg, Hamburg, Germany, Enrique N Curchitser, Rutgers University New Brunswick, Department of Environmental Sciences, New Brunswick, NJ, United States, Sonya Legg, Center for Ocean Leadership at UCAR, Boulder, United States, Dujuan Kang, Shanghai Jiao Tong University, School of Oceanography, Shanghai, China and Han Wang, University of Hamburg, Institute of Oceanography, Hamburg, Germany