Table 1.

Surface area and C emission (with associated uncertainties, see Methods) for inland waters of Western Siberia.

	Ob’ main channel	Rivers	Streams	Permafrost lakes	Permafrost-free lakes	Ponds
Area, km2	6831	12,919	13,639	96,089	74,940	254,956
C emission, Pg C yr−1	0.004 (±0.001)	0.013 (±0.003)	0.013 (±0.003)	0.024 (±0.006)	0.008 (±0.002)	0.039 (±0.010)