NGS-2008-09-00905 Supplementary Table S1 Table S1. Comparison of MARGO and PMIP2 mean annual SST anomalies (modern - LGM) for key regions (°C) Region MARGO FGOALS-1.0g1 CCSM1 HadCM3M21 IPSL-CM4-V1-MR1 Western North Atlantic2 - 1.8 ± 2.9 - 5.0 ± 3.4 - 5.3 ± 3.7 - 4.5 ± 3.5 - 2.9 ± 2.3 Eastern North Atlantic3 - 5.6 ± 2.7 - 4.3 ± 1.0 - 5.7 ± 2.1 - 3.7 ± 1.1 - 4.7 ± 1.0 Resulting N. Atl. W-E gradient 3.8 ± 3.9 - 0.7 ± 3.6 0.3 ± 4.3 - 0.8 ± 3.6 1.8 ± 2.5 Western tropical South Atlantic4 - 1.5 ± 0.2 - 2.6 ± 0.9 - 1.9 ± 0.2 - 1.6 ± 0.2 - 1.6 ± 0.2 Eastern tropical South Atlantic5 - 2.9 ± 1.3 - 3.3 ± 0.3 - 2.0 ± 0.1 - 1.0 ± 0.4 - 1.5 ± 0.3 Resulting trop. S. Atl. W-E gradient 1.3 ± 1.3 0.8 ± 1.0 0.1 ± 0.2 - 0.6 ± 0.5 - 0.1 ± 0.4 Western tropical South Pacific6 - 0.8 ± 1.1 - 1.9 ± 0.4 - 1.8 ± 0.2 - 2.0 ± 0.5 - 1.9 ± 0.4 Eastern tropical South Pacific7 - 3.0 ± 1.5 - 2.4 ± 0.3 - 2.0 ± 0.3 - 2.6 ± 0.1 - 2.6 ± 0.2 Resulting trop. S. Pac. W-E gradient 2.2 ± 1.9 0.5 ± 0.5 0.2 ± 0.4 0.7 ± 0.5 0.7 ± 0.5 "1PMIP2 models output from Figure S3 (http://pmip2.lsce.ipsl.fr/) have been remaped on a 5°x5° grid; arithmetic means and standard deviations are computed on the same blocks as for MARGO data." "2defined as 30 to 60°N, 70 to 30°W; arithmetic mean and standard deviation of the MARGO 5°x5° blocks containing data (13 blocks)." "3defined as 30 to 60°N, 30°W to 20°E; arithmetic mean and standard deviation of the MARGO 5°x5° blocks containing data (23 blocks)." "4defined as 0 to 30°S, 70 to 30°W; arithmetic mean and standard deviation of the MARGO 5°x5° blocks containing data (5 blocks)." "5defined as 0 to 30°S, 0 to 20°E; arithmetic mean and standard deviation of the MARGO 5°x5° blocks containing data (8 blocks)." "6defined as 0 to 30°S, 145°E to 100°W; arithmetic mean and standard deviation of the MARGO 5°x5° blocks containing data (24 blocks)." "7defined as 0 to 30°S, 100 to 70°W; arithmetic mean and standard deviation of the MARGO 5°x5° blocks containing data (4 blocks). "