1. Prof., Nat. Res. Ctr. for Marine Envir. Forecasts, SOA, 8, Dahuisi Rd., Beijing 100081, China. E-mail: hdwu@sun.ihep.ac.cn or hdwu@axp800.nmefc.gov.cn
2. Res. Assoc., Nat. Res. Ctr. for Marine Envir. Forecasts, Beijing, China.
3. Res. Asst., Nat. Res. Ctr. for Marine Envir. Forecasts, Beijing, China.
4. Prof., Nat. Res. Ctr. for Marine Envir. Forecasts, Beijing, China.
5. Res. Asst., Dept. of Civ. and Envir. Engrg., Clarkson Univ., Potsdam, NY 13699-5710.