Hydrological Excitation of Polar Motion Derived from GRACE Gravity Field Solutions
Figure 2
Hydrological excitation functions computed from geodetic residuals (G-A-O), GRACE solutions, and CPC and GLDAS hydrological models. We observe that GRACE-based excitations are well correlated with geodetic residual. We note the large differences between the hydrological models especially in the case of .
