School of Marine Science and Technology;
Tianjin University;
Tianjin 300110;
China;
Key Laboratory of Marine Environmental Information Technology;
National Marine Data and Information Service;
Ministry of Natural Resources;
Tianjin 300171;
China;
Second Institute of Oceanography;
Ministry of Natural Resources;
Hangzhou 310012;
China;
variational successive corrections; spatial multi-scale recursive filter; sea ice concentration;