The impact of present-day mass changes in the large ice sheets and glaciers on LSL can be modeled using the LSL equation first set up by Farrell and Clark (1976) and later modified and improved by others, for example, Mitrovica et al. This equation accounts for the gravity effect of the shifting masses as well as the coupled gravity-deformation effect on the solid Earth in a self-consistent way. On time scales of centuries, the main response of the solid Earth to the shifting loads is elastic, and therefore, the LSL equation can be solved for the elastic case. Another simplification is to consider a Earth model that is spherically symmetric. The resulting "fingerprints" show significant fall of LSL close to the melting ice masses and larger-than average rise in LSL in the far-field of the melting ice mass. However, recently large differences have been noted in the fingerprints computed by different groups, which may be due to differences in model assumptions.