Incorporating the stable carbon isotope <sup>13</sup>C in the ocean biogeochemical component of the Max Planck Institute Earth System Model

Liu, Bo; Six, Katharina D.; Ilyina, Tatiana

doi:https://doi.org/10.5194/bg-18-4389-2021

Articles | Volume 18, issue 14

https://doi.org/10.5194/bg-18-4389-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-18-4389-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 14

Research article

|

28 Jul 2021

Research article |

| 28 Jul 2021

Incorporating the stable carbon isotope ¹³C in the ocean biogeochemical component of the Max Planck Institute Earth System Model

Bo Liu, Katharina D. Six, and Tatiana Ilyina

Data sets

Quality controlled ocean temperature and salinity profiles and monthly objective analyses with uncertainty estimates (https://www.metoffice.gov.uk/hadobs/en4/) Simon A. Good, Matthew J. Martin, and Nick A. Rayner https://doi.org/10.1002/2013JC009067

World Ocean Atlas 2013, Volume 4: Dissolved Inorganic Nutrients (phosphate, nitrate, silicate) H. E. Garcia, R. A. Locarnini, T. P. Boyer, J. I. Antonov, O. K. Baranova, M. M. Zweng, J. R. Reagan, and D. R. Johnson https://www.nodc.noaa.gov/OC5/woa13/pubwoa13.html

World Ocean Atlas 2013, Volume 3: Dissolved Oxygen, Apparent Oxygen Utilization, and Oxygen Saturation H. E. Garcia, R. A. Locarnini, T. P. Boyer, J. I. Antonov, O. K. Baranova, M. M. Zweng, J. R. Reagan, and D. R. Johnson https://www.nodc.noaa.gov/OC5/woa13/pubwoa13.html

A global ocean carbon climatology: Results from Global Data Analysis Project (GLODAP) (https://www.ncei.noaa.gov/access/ocean-carbon-data-system/oceans/glodap/) R. M. Key, A. Kozyr, C. L. Sabine, K. Lee, R. Wanninkhof, J. L. Bullister, R. A. Feely, F. J. Millero, C. Mordy, and T.-H. Peng https://doi.org/10.1029/2004GB002247

A 30 years observation-based global monthly gridded sea surface pCO2 product from 1982 through 2011 P. Landsch{\"u}tzer, N. Gruber, N., and D. Bakker https://www.ncei.noaa.gov/access/ocean-carbon-data-system/oceans/SPCO2_1982_2011_ETH_SOM_FFN.html

Carbon-based primary productivity modeling with vertically resolved photoacclimation (http://sites.science.oregonstate.edu/ocean.productivity/) T. Westberry, M. J. Behrenfeld, D. A. Siegel, and E. Boss https://doi.org/10.1029/2007GB003078

Biology and air–sea gas exchange controls on the distribution of carbon isotope ratios (δ13C) in the ocean (https://andreasschmittner.github.io/publications.html) A. Schmittner, N. Gruber, A. C. Mix, R. M. Key, A. Tagliabue, and T. K. Westberry https://doi.org/10.5194/bg-10-5793-2013

Climatological distributions of δ13C of dissolved inorganic carbon in the global oceans. Marie Eide, Are Olsen, Ulysses S. Ninnemann, Tor Eldevik, and Truls Johannessen https://doi.org/10.1594/PANGAEA.872004

Short summary

We incorporate a new representation of the stable carbon isotope ¹³C in a global ocean biogeochemistry model. The model well reproduces the present-day ¹³C observations. We find a recent observation-based estimate of the oceanic ¹³C Suess effect (the decrease in ¹³C/¹²C ratio due to uptake of anthropogenic CO₂; ¹³C_SE) possibly underestimates ¹³C_SE by 0.1–0.26 per mil. The new model will aid in better understanding the past ocean state via comparison to ¹³C/¹²C measurements from sediment cores.

Incorporating the stable carbon isotope 13C in the ocean biogeochemical component of the Max Planck Institute Earth System Model

Data sets

Incorporating the stable carbon isotope ¹³C in the ocean biogeochemical component of the Max Planck Institute Earth System Model