Figure 1. Annual-mean CO2 land fluxes and flux anomalies for 2015 from the ct model, both in gC m-2 yr-1.

• Figure 1a: land fluxes from the IS experiment.
• Figure 1b: land flux anomalies from the IS experiment.
• Figure 1c: land fluxes from the LNLG experiment.
• Figure 1d: land flux anomalies from the LNLG experiment.
• Figure 1e: land fluxes from the LNLGIS experiment.
• Figure 1f: land flux anomalies from the LNLGIS experiment.
• Figure 1g: land fluxes from the LNLGOGIS experiment.
• Figure 1h: land flux anomalies from the LNLGOGIS experiment.

Each model has a different definition of land and ocean. Some models in particular use either coarse flux grids or correlation length scales that can put apparent land fluxes in the ocean or vice versa. There's no single way to handle these different definitions without some incongruity; we have chosen here to preserve total land and total ocean flux. As a result, some small artifacts are apparent in these graphics.