The Natural Fix?

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31

Ocean carbon cycle

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150

1 020

750

38 100

700

Deep ocean

Dissolved

organic C

Sediments

Ocean surface

Atmosphere

Rivers

Marine

biota

0.8

3

4

6

6

0.2

40

50

100

90

92

96.1

Source: IPCC, 2001.

Carbon fluxes and stocks

Fluxes: Gigatonnes of C per year

Storage: Gigatonnes of C

1 020

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