1. Guangdong Key Laboratory of Coastal Ocean Variability and Disaster Prediction, Guangdong Ocean University, Zhanjiang, China
2. Department of Atmospheric and Oceanic Science, University of Maryland, College Park, MD, USA
3. State Key Laboratory of Marine Environmental Science, College of Ocean & Earth Sciences, Xiamen University, Xiamen, China
4. National Satellite Ocean Application Service, State Oceanic Administration, Beijing, China