Table 1 Definition of key quantities with associated units

From: Carbon isotope budget indicates biological disequilibrium dominated ocean carbon storage at the Last Glacial Maximum

Symbol

Description

Units

R

Measured 13C/12C ratio

Rs

Standard 13C/12C ratio

δ13C

Deviation of measured 13C from standard

m

Total amount of carbon in the ocean

mol

msat

Total saturated carbon

mol

mseq

Total sequestered carbon

mol

Cseq

Ocean average sequestered carbon concentration

mol/m3

\({\bar{\delta }}_{o}\)

Mass-averaged δ13C in the ocean

\({\bar{\delta }}_{a}\)

Atmospheric δ13C

\({\bar{\delta }}_{o,sat}\)

Saturated δ13C

\({\bar{\delta }}_{o,seq}\)

Sequestered δ13C

\({\bar{\epsilon }}_{d}\)

Air-sea carbon isotopes fractionation factor

\({\bar{\epsilon }}_{p}\)

Photosynthetic carbon isotopes fractionation factor

\({\bar{\epsilon }}_{seq}\)

Sequestered isotopic offset factor