1. State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China.
2. Global Ocean and Climate Research Center, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China.
3. Department of Atmospheric and Oceanic Sciences, University of Colorado, Boulder, Colorado, USA.
4. National Oceanic and Atmospheric Administration/Pacific Marine Environmental Laboratory, Seattle, WA, USA.
5. National Center for Atmospheric Research, Boulder, CO, USA.