Articles | Volume 19, issue 18
Research article
27 Sep 2022
Research article |  | 27 Sep 2022

A Numerical reassessment of the Gulf of Mexico carbon system in connection with the Mississippi River and global ocean

Le Zhang and Z. George Xue

Related authors

The role of sediment-induced light attenuation on primary production during Hurricane Gustav (2008)
Zhengchen Zang, Z. George Xue, Kehui Xu, Samuel J. Bentley, Qin Chen, Eurico J. D'Sa, Le Zhang, and Yanda Ou
Biogeosciences, 17, 5043–5055,,, 2020

Related subject area

Biogeochemistry: Coastal Ocean
Influence of manganese cycling on alkalinity in the redox stratified water column of Chesapeake Bay
Aubin Thibault de Chanvalon, George W. Luther, Emily R. Estes, Jennifer Necker, Bradley M. Tebo, Jianzhong Su, and Wei-Jun Cai
Biogeosciences, 20, 3053–3071,,, 2023
Short summary
Estuarine flocculation dynamics of organic carbon and metals from boreal acid sulfate soils
Joonas J. Virtasalo, Peter Österholm, and Eero Asmala
Biogeosciences, 20, 2883–2901,,, 2023
Short summary
Drivers of particle sinking velocities in the Peruvian upwelling system
Moritz Baumann, Allanah Joy Paul, Jan Taucher, Lennart Thomas Bach, Silvan Goldenberg, Paul Stange, Fabrizio Minutolo, and Ulf Riebesell
Biogeosciences, 20, 2595–2612,,, 2023
Short summary
Impacts and uncertainties of climate-induced changes in watershed inputs on estuarine hypoxia
Kyle E. Hinson, Marjorie A. M. Friedrichs, Raymond G. Najjar, Maria Herrmann, Zihao Bian, Gopal Bhatt, Pierre St-Laurent, Hanqin Tian, and Gary Shenk
Biogeosciences, 20, 1937–1961,,, 2023
Short summary
Considerations for hypothetical carbon dioxide removal via alkalinity addition in the Amazon River watershed
Linquan Mu, Jaime B. Palter, and Hongjie Wang
Biogeosciences, 20, 1963–1977,,, 2023
Short summary

Cited articles

Adkins, J. F., Naviaux, J. D., Subhas, A. V., Dong, S., and Berelson, W. M.: The Dissolution Rate of CaCO3 in the Ocean, Ann. Rev. Mar. Sci., 13, 57–80,, 2021. 
Aké-Castillo, J. A. and Vázquez, G.: Phytoplankton variation and its relation to nutrients and allochthonous organic matter in a coastal lagoon on the Gulf of Mexico, Estuar. Coast. Shelf Sci., 78, 705–714,, 2008. 
Anav, A., Friedlingstein, P., Kidston, M., Bopp, L., Ciais, P., Cox, P., Jones, C., Jung, M., Myneni, R., and Zhu, Z.: Evaluating the land and ocean components of the global carbon cycle in the CMIP5 earth system models, J. Clim., 26, 6801–6843,, 2013. 
Arora, V. K. and Boer, G. J.: Effects of simulated climate change on the hydrology of major river basins, J. Geophys. Res.-Atmos., 106, 3335–3348,, 2001. 
Babaousmail, H., Hou, R., Ayugi, B., Ojara, M., Ngoma, H., Karim, R., Rajasekar, A., and Ongoma, V.: Evaluation of the Performance of CMIP6 Models in Reproducing Rainfall Patterns over North Africa, Atmosphere, 12, 475,, 2021. 
Short summary
We adopt a high-resolution carbon model for the Gulf of Mexico (GoM) and calculate the decadal trends of important carbon system variables in the GoM from 2001 to 2019. The GoM surface CO2 values experienced a steady increase over the past 2 decades, and the ocean surface pH is declining. Although carbonate saturation rates remain supersaturated with aragonite, they show a slightly decreasing trend. The northern GoM is a stronger carbon sink than we thought.
Final-revised paper