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Table 2 Global-scale net sinks and errors for 2008–2017. The sink values do not include fossil fuel emissions. These errors are derived using root-mean-square errors against the true fluxes over the land, the ocean, and the global total carbon fluxes

From: Toward a long-term atmospheric CO2 inversion for elucidating natural carbon fluxes: technical notes of NISMON-CO2 v2021.1

Flux data Sinks (Pg C yr−1) Root-mean-square errors (× 10−1 g C m−2 day−1)
Land Ocean Total Land Ocean Total
True 2.62 2.04 4.67 n/a n/a n/a
Prior 4.61 1.41 6.02 5.92 0.33 5.93
CTL 3.39 1.29 4.68 3.48 0.29 3.49
NO_ERR 3.38 1.29 4.67 2.73 0.29 2.74
ICO 3.38 1.31 4.69 4.19 0.26 4.19
NO_WTS 3.39 1.26 4.65 4.61 0.32 4.62
ISO_ERR 3.38 1.31 4.69 4.52 0.29 4.53