Table 1.

Estimates of total organic carbon (DOC + POC) fluxes in Ob, Yenisey, Lena, and Kolyma, as well as carbon fluxes from permafrost and peat deposits

RiverTotal organic carbon* (Tg y−1)PP-C (Tg y−1)
Best EstimateMinimumMaximum
Ob4.7 ± 0.71.2 ± 0.20.9 ± 0.11.8 ± 0.3
Yenisey4.9 ± 0.40.7 ± 0.20.5 ± 0.11.1 ± 0.2
Lena6.5 ± 1.00.9 ± 0.20.5 ± 0.11.7 ± 0.3
Kolyma0.9 ± 0.20.2 ± 0.00.1 ± 0.00.3 ± 0.1
All rivers17.0 ± 1.33.0 ± 0.32.0 ± 0.25.0 ± 0.5
  • Values are represented as mean ± SD.

  • * Estimates from refs. 10 and 20.

  • Best Estimate, Minimum, and Maximum represent model scenarios for PP-C fluxes. See SI Appendix, Table S9 for detailed data.