Fig. S6. Maps of partial variance explained by the SAMΣ and lagged- Niño3.4Σterms . R2 are shown for the combination of the SAMΣ and Niño3.4Σ terms (top row) and each independently (middle and lower rows). Partial variances explained are often smaller for the gridded dataset than for entire basins or AIS, WAIS, APIS, or EAIS due to averaging of time series noise and often stronger signal over larger areas, although cancelling of signal does also occur at the ice sheet scale.