-The difference between the anthropogenic carbon uptake in the forward model simulations in 1995 and the inverse flux estimates using the same models scaled to 1995 (Pg C yr-1). Positive (negative) values indicate that the forward model simulations find more (less) anthropogenic carbon uptake than the inverse model. Forward simulations for the model version used here are not available for the ECCO and MIT models. Region Name Region Number NCAR PR-LL PR-HH PR-LHS PR-2 PR-2a UL Arctic Ocean 1 -0.01 -0.01 -0.01 -0.01 0.01 0.01 0.03 N. Atl. High-Lat. 2 0.10 0.03 0.02 0.03 0.03 0.03 -0.05 N. Atl. Mid-Lat. 3 -0.04 -0.03 -0.02 -0.04 -0.03 -0.06 0.12 N. Atl. Low-Lat. 4 0.04 0.03 0.03 0.03 0.04 0.04 -0.07 N. Atl. Trop. 5 0.01 0.01 0.01 0.01 0.01 0.01 0.06 S. Atl. Trop. 6 0.06 -0.02 -0.04 -0.02 -0.02 -0.02 -0.05 S. Atl. Low-Lat. 7 0.01 0.00 0.00 0.00 0.00 0.00 0.01 S. Atl. Mid-Lat. 8 -0.03 0.02 0.02 0.01 0.01 0.01 -0.03 S. Atl. High-Lat. 9 -0.06 -0.01 0.00 0.04 0.03 0.05 -0.02 S. Ocean 10 0.03 -0.05 0.02 -0.06 -0.03 -0.08 0.24 N.W. Pac. High-Lat. 11 0.00 0.00 -0.01 0.00 0.00 -0.01 0.01 N.E. Pac. High-Lat. 12 0.01 0.00 0.00 0.00 0.00 0.00 0.00 N.W. Pac. Low-Lat. 13+14 -0.03 0.02 0.04 0.02 0.03 0.02 -0.03 N.E. Pac. Low-Lat. 15 0.03 0.01 0.02 0.01 0.02 0.00 0.03 N.W. Pac. Trop. 16 0.06 0.02 0.02 0.02 0.03 0.05 0.05 N.E. Pac. Trop. 17 -0.06 0.00 -0.04 0.00 -0.02 -0.02 -0.05 S.W. Pac. Trop. 18 0.03 0.01 0.01 0.01 0.01 0.01 0.04 S.E. Pac. Trop. 19 0.05 0.04 0.04 0.04 0.03 0.06 0.04 S.W. Pac. Mid-Lat. 20+22 0.01 0.04 0.03 0.04 0.04 0.04 0.07 S.E. Pac. Mid-Lat. 21+23+24 0.00 0.03 0.02 0.03 0.03 0.02 0.03 S. Sub-Polar Pac. + Ind 25+30 0.05 -0.10 -0.06 -0.13 -0.11 -0.09 -0.20 Trop. Ind. 26+27 0.09 0.03 0.05 0.03 0.04 0.05 0.03 S. Ind. Low-Lat. 28 -0.05 0.01 -0.03 0.01 0.00 -0.02 0.01 S. Ind. High-Lat. 29 -0.02 -0.04 -0.04 -0.02 -0.03 -0.01 -0.16 Global Total Null 0.18 0.05 0.10 0.05 0.07 0.10 0.14