Table 1 Simulated ice volumes (meters sea level equivalent, mSLE) averaged over the West Antarctic Ice Sheet (WAIS), over the Pacific sector of the East Antarctic Ice Sheet (EAIS_PACIFIC) and over the Atlantic sector of the EAIS (EAIS_ATLANTIC) for each of the subglacial topographies for the control simulations under glacial conditions.

From: Past continental shelf evolution increased Antarctic ice sheet sensitivity to climatic conditions

Ice volumes (m SLE)

EOT

SHALLOW_MIO

DEEP_MIO

RBEDMAP2

MIOCENE glaciation

WAIS

14.46

14.27

13.15

12.29

EAIS_PACIFIC

40.97

41.61

38.33

33.99

EAIS_ATLANTIC

25.30

25.51

23.48

24.37

TOTAL

80.6

81.03

74.78

70.75

LGM (ESL = −70 m)

WAIS

13.01

13.19

10.15

7.00

EAIS_PACIFIC

38.66

38.39

33.78

31.21

EAIS_ATLANTIC

22.26

22.16

20.61

18.58

TOTAL

73.93

73.95

64.55

58.79

LGM (ESL = −120 m)

WAIS

13.68

14.05

11.90

11.90

EAIS_PACIFIC

38.84

39.48

34.96

33.48

EAIS_ATLANTIC

22.75

22.64

20.98

21.30

TOTAL

75.29

76.17

67.84

66.7

  1. Ice volumes correspond to the mean of the four simulations testing different oceanic forcing for each subglacial topography . The EAIS_PACIFIC includes the Amery Ice Shelf drainage basin, whereas the EAIS_ATLANTIC includes half of the Weddell Sea basin. Sectors are based on Antarctic drainage basins from Zwally et al.55. Bold values correspond to the averaged volumes computed over the most realistic Miocene and Pleistocene subglacial topography and bathymetry, i.e., DEEP_MIO (according to Fig. 2) and RBEDMAP2, respectively.
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