Table 2 Comparison between different prescribed LGM elevation and resulting δ18O changes

From: Reconciling glacial Antarctic water stable isotopes with ice sheet topography and the isotopic paleothermometer

 

LGM elevation changes (m)

ε (Δδ18O) (‰)

Site

ICE-5G

PMIP3

ICE-6G_C

GLAC-1D

ICE-5G

PMIP3

ICE-6G_C

GLAC-1D

EDML

220

350

210

180

0.7

0.1

1.0

2.2

Dome F

250

340

110

70

0.5

0.8

1.4

1.2

Dome B

290

50

90

50

−1.5

1.4

1.1

0.9

Vostok

300

270

120

40

−2.7

0.9

1.0

−0.4

Law Dome

160

280

390

290

0.9

1.2

−0.2

0.4

EDC

250

280

90

120

−1.0

0.5

0.2

0.1

Taylor Dome

280

660

200

110

1.7

−0.8

2.2

1.1

Talos

140

490

130

220

2.3

0.8

2.6

1.3

Siple Dome

1830

1730

410

670

−1.4

−0.6

4.2

2.8

Byrd

1000

1150

520

250

−1.3

−1.7

2.1

4.7

WDC

650

870

530

240

−1.7

−2.0

0.4

3.0

RMSE (‰)

    

1.5

1.1

1.9

2.1

  1. The columns list the selected deep-drilling ice core sites, LGM elevation changes at the drilling sites suggested by four ice sheet reconstructions (ICE-5G, PMIP3, ICE-6G_C and GLAC-1D), and deviation ε (modelled minus measured) of LGM-PD Δδ18O change for the different prescribed ice sheet reconstructions. In the last row, the root mean square error (RMSE) between modelled and measured LGM-PD Δδ18O for all 11 ice core sites is given
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