US JGOFS-SMP
Where:
Canth =
Anthropogenic carbon concentration
Cm = Measured
total carbon concentration
DCbio = Change in TCO2 as a result of
biological activity
Early
Approaches for Isolating the Anthropogenic Component
of Measured TCO2
Brewer, P.G., Direct
observation of the oceanic CO2 increase, Geophys. Res. Lett., 5, 997-1000, 1978.
Canth = Cm - DCbio - Cphys
Chen, C.-T. A. and F. J. Millero, Gradual increase of oceanic CO2, Nature, 277, 205-206, 1979.
= RC:O2 AOU + 0.5 (NTAm – NTA0+ RN:O2 AOU)
Cphys = Preformed
TCO2 concentration of waters