Abstract In this paper, we use GRACE CSR Mascom data to analyze the effect on the leakage error correctionof boundary expansion and ocean signal within the boundary by means of fitting method in the Antarctic. Simulated results show that the minimum extending range is 300 km, when only considering the leakage-out error from the Antarctic.The ocean signal in the expansion boundary has a significant influence on the Antarctic mass change, particularly for spatial distribution of the mass change along the coastline region. When considering the leakage-out error and the influence of the adjacent ocean signal, the experiment suggests that the optimized extending range is 100 km. Then, the optimized extending range is applied to the fitting method, and the trend of the Antarctic mass change derived from the GRACE CSR RL05 data is -178.61 Gt/a, which is in good agreement with the Mascom results.
QIU Chunhong,FAN Dongming,GU Yanchao et al. Estimation and Application of Optimized Extending Range to Reduce Leakage Error in the Antarctic by Means of Fitting Method[J]. jgg, 2019, 39(11): 1127-1131.
QIU Chunhong,FAN Dongming,GU Yanchao et al. Estimation and Application of Optimized Extending Range to Reduce Leakage Error in the Antarctic by Means of Fitting Method[J]. jgg, 2019, 39(11): 1127-1131.