Chinese Journal of Polar Research

Chinese Journal of Polar Research ›› 2021, Vol. 33 ›› Issue (1): 13-26.DOI: 10. 13679/j.jdyj.20200061

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Development and accuracy of tide models in Antarctica

Sun Weikang1,2, Zhou Xinghua1,2, Zhou Dongxu2, Sun Yanfei1,2   

  1. 1 College of Geodesy and Geomatics，Shandong University of Science and Technology, Qingdao 266590, China;
    2 The First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266100, China
  • Received:2020-09-01 Revised:2020-10-20 Online:2021-03-31 Published:2021-03-26
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Abstract: Polar tides play an important role in the dynamics of sea ice and floating ice shelves. Currently, the accuracy of ocean tide models is much lower for shallow and polar seas than for open deep seas. This paper summarizes the latest research findings from the application of global tide models to the Antarctic region, and the development of tide models for five Antarctic regions, including the Antarctic Peninsula, Ross Sea, Filchner–Ronne Ice Shelf, Weddell Sea, and Amery Ice Shelf. The accuracy of the FES2014, TPXO9, CATS2008, regional tide models and tide models for the Antarctic Peninsula, Ross Sea, Weddell Sea, and Amery Ice Shelf were evaluated. Accuracy of FES2014 and AntPen are higher in the Antarctic Peninsula region. The Root Sum Squares (RSS) are 8.61 and 7.46 cm, respectively. Accuracy of TPXO9 and RIS_Optimal are higher in the Ross Sea area, with RSS of 5.62 and 6.21 cm, respectively. Accuracy of TPXO9 is highest in the Weddell Sea and Amery Ice Shelf areas, with RSS of 18.33 and 12.77 cm, respectively.

Key words: Antarctica, FES2014, TPXO9, CATS2008, accuracy assessment