1. Graduate School of Oceanography, University of Rhode Island, Narragansett, Rhode Island 02882 USA
2. Departments of Oceanography and Meteorology, Texas A & M University, College Station, Texas 77845 USA
3. Xi’an Laboratory of Loess and Quaternary Geology, The Chinese Academy of Science, Xi’an, People’s Republic of China
4. Chinese Antarctic Administration, Beijing, People’s Republic of China
5. National Research Center for Marine Environmental Forecasts, Beijing, People’s Republic of China
6. Third Institute of Oceanography, State Oceanic Administration, Xiamen, People’s Republic of China