Abstract：Based on the generalized three-cornered hat method, we evaluate the uncertainties of global basin terrestrial water storage (TWS) changes calculated by five latest released GRACE/GRACE-FO time-varying gravity field models. Then, we investigate the effects of geographic location, climate type, and basin area on the uncertainties of basin TWS. The results show that: 1) The average uncertainties of basin-scale TWS changes for COST-G, CSR, JPL, ITSG, and GFZ models are 0.41 cm, 0.63 cm, 0.66 cm, 0.81 cm, and 0.97 cm, respectively. 2) Uncertainty in basin TWS changes is strongly correlated with geographic location and basin area, while climate type has little impact on the uncertainty. 3) There are large differences in the basin TWS changes from different solutions when observed data is poor.
HUANG Jun,GU Yanchao,HUANG Feilong et al. Uncertainties of Basin Terrestrial Water Storage Changes Inversed by GRCAE/GRACE-FO Using Generalized Three-Cornered Hat Method[J]. jgg, 2023, 43(9): 957-962.
