Yang Feng, SCSIO South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China; SCSIO,CAS, Guangzhou, China, Dimitris Menemenlis, NASA Jet Propulsion Laboratory, Pasadena, CA, United States, Huijie Xue, University of Maine, United States, Zhiqiang LIU, Southern University of Science and Technology, Department of Ocean Science and Engineering, Shenzhen, China and Peng Xiu, SCSIO South China Sea Institute of Oceanology, Chinese Acaademy of Sciences, Guangzhou, China