TABLE 5b

COSMOGENICALLY PRODUCED CARBON ( 14 C)

AS SUGGESTED BY BROECKER (1963) AND UNSCEAR (1977 )

Production Rate (atoms·cm -2 ·s -1 )

Troposphere

Total Atmosphere

Global Inventory



1.1

2.28

5.21 × 10 4 kg





1.4 Bq/year

8500 PBq

Distribution (%)

Stratosphere

Troposphere

Biosphere/land surface

Mixed ocean layer

Deep ocean layer

Ocean sediments



0.48

1.2

1.6

1.4

87.3

8.0


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