School of Marine Science and Environment Engineering;
Dalian Ocean University;
Dalian 116023;
China;
Operational Oceanographic Institution;
Dalian Ocean University;
Dalian 116023;
China;
Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou);
Guangzhou 511458;
China;
Institute of Marine Science;
Hebei Normal University of Science and Technology;
Qinhuangdao 066600;
China;
Tianjin Marine Environmental Monitoring Central Station;
Ministry of Natural Resources;
Tianjin 300457;
China;
GOCE; gravity field model; mean dynamic topography; geostrophic current;