Qihua Peng, SCSIO South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China, Shang-Ping Xie, Scripps Institution of Oceanography, La Jolla, CA, United States, Dongxiao Wang, Chinese Acad Sci, Guangzhou, China, Xiao-Tong Zheng, Ocean University of China, College of Oceanic and Atmospheric Sciences, Qingdao, China and Hong Zhang, NASA Jet Propulsion Laboratory, Pasadena, CA, United States