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
High metabolism and periodic hypoxia associated with drifting macrophyte detritus in the shallow subtidal Baltic Sea
Karl M. Attard, Anna Lyssenko, and Iván F. Rodil
Biogeosciences, 20, 1713–1724,,, 2023
Short summary
Production and accumulation of reef framework by calcifying corals and macroalgae on a remote Indian Ocean cay
M. James McLaughlin, Cindy Bessey, Gary A. Kendrick, John Keesing, and Ylva S. Olsen
Biogeosciences, 20, 1011–1026,,, 2023
Short summary
Zooplankton community succession and trophic links during a mesocosm experiment in the coastal upwelling off Callao Bay (Peru)
Patricia Ayón Dejo, Elda Luz Pinedo Arteaga, Anna Schukat, Jan Taucher, Rainer Kiko, Helena Hauss, Sabrina Dorschner, Wilhelm Hagen, Mariona Segura-Noguera, and Silke Lischka
Biogeosciences, 20, 945–969,,, 2023
Short summary
Temporal and spatial evolution of bottom-water hypoxia in the St Lawrence estuarine system
Mathilde Jutras, Alfonso Mucci, Gwenaëlle Chaillou, William A. Nesbitt, and Douglas W. R. Wallace
Biogeosciences, 20, 839–849,,, 2023
Short summary
Significant nutrient consumption in the dark subsurface layer during a diatom bloom: a case study on Funka Bay, Hokkaido, Japan
Sachi Umezawa, Manami Tozawa, Yuichi Nosaka, Daiki Nomura, Hiroji Onishi, Hiroto Abe, Tetsuya Takatsu, and Atsushi Ooki
Biogeosciences, 20, 421–438,,, 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