Siying Liu¹, Ping Chang², Xiuquan Wan³, Frederic S Castruccio⁴, Stephen G Yeager⁵ and Gokhan Danabasoglu⁴, (1)Ocean University of China, Oceanography, Qingdao, China, (2)Texas A & M Univ, College Station, TX, United States, (3)Ocean University of China, Qingdao, China, (4)National Center for Atmospheric Research, Boulder, CO, United States, (5)NCAR, Oceanography, Boulder, CO, United States