Yiqun Lu^1,2, Lynne D Talley³, Ivana Cerovecki⁴, Shang-Ping Xie², Matthew R Mazloff⁵, Sarah T Gille⁶, Qinyu Liu¹ and Yu Zhang¹, (1)Ocean University of China, Qingdao, China, (2)Scripps Institution of Oceanography, La Jolla, CA, United States, (3)University of California San Diego, La Jolla, CA, United States, (4)Scripps Institute of Oceanography, La Jolla, CA, United States, (5)SIO, La Jolla, CA, United States, (6)UCSD, La Jolla, CA, United States