Yu-heng Tseng, National Taiwan University, Taipei, Taiwan, Han-Ching Chen, University of Hawaii at Manoa, Atmospheric Sciences, Honolulu, HI, United States, Zeng-Zhen Hu, Climate Prediction Center, NCEP/NOAA, College Park, MD, United States and RuiQiang Ding, Chinese Academy of Sciences, Institute of Atmospheric Physics, Beijing, China