Table 3.

Areal Fraction of Inferred Basal Thermal State of the GrIS by Method and Synthesis

Method	Basal thermal state (%)a
	Frozen	Thawed	Uncertain
3-D thermomechanical model	63 (56–80)	29 (10–37)	8 (7–10)
Shape factor from radiostratigraphy	40 (19–41)	10 (9–12)	14 (14–32)
Maximum deformation speed	N/A	33 (18–76)	N/A
Surface texture	N/A	69 (N/A–78)	N/A
Synthesisb	24	43	34

^aStandard value followed by range in parentheses. Values rounded to integer percentage.

^bLikely basal thermal state as shown in Figure 11 and following hole-filling operation.