Sulfate enrichment in estuaries of the northwestern Gulf of Mexico: The potential effect of sulfide oxidation on carbonate chemistry under a changing climate

Yin, Hang; Hu, Xinping; Dias, Larissa M.

doi:10.1002/lol2.10335

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Sulfate enrichment in estuaries of the northwestern Gulf of Mexico: The potential effect of sulfide oxidation on carbonate chemistry under a changing climate

2023
By Yin, Hang ; Hu, Xinping ; Dias, Larissa M.
Source: Limnology and Oceanography Letters, 8(5), 742-750

[PDF-1.41 MB]

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Details:

Journal Title:

Limnology and Oceanography Letters
Personal Author:

Yin, Hang ; Hu, Xinping ; Dias, Larissa M.

Yin, Hang ; Hu, Xinping ; Dias, Larissa M. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; Sea Grant

OAR (Oceanic and Atmospheric Research) ; Sea Grant Less -
Sea Grant Program:

TAMU (Texas Sea Grant)
Description:

Water quality parameters from 2000 to 2020 were used to identify the spatial and temporal sulfate variations in estuaries of the northwestern Gulf of Mexico. Sulfate enrichment relative to conservative mixing was found to be associated with a low river discharge period from 2012 to 2014 in all estuaries. Based on reaction stoichiometry, sedimentary sulfide oxidation holds significant potential for reducing the alkalinity in estuarine waters. However, during this extreme drought, alkalinity enrichment was also occasionally observed in some of the southern estuaries along with sulfate enrichment, and when alkalinity depletion occurred, the magnitude of depletion was usually much less than what would be expected based on sulfide oxidation alone. This discrepancy can be partially explained by carbonate dissolution and other proton removal pathways (e.g., Fe‐oxide dissolution), and by the uncertainties in the model used to estimate alkalinity enrichment/depletion. Under a changing climate, the close coupling between river discharge variation and estuarine sulfate dynamics will significantly impact estuarine carbonate chemistry.
Source:

Limnology and Oceanography Letters, 8(5), 742-750
DOI:

https://doi.org/10.1002/lol2.10335
ISSN:

2378-2242;2378-2242;
Format:

PDF
Publisher:

Wiley
Document Type:

Journal Article
Funding:

Grant no. NA14OAR4170102 ; Grant no. NA18OAR4170088

Grant no. NA14OAR4170102 ; Grant no. NA18OAR4170088 Less -
License:

https://creativecommons.org/licenses/by/4.0/
Rights Information:

CC BY
Compliance:

Library
Main Document Checksum:

[+]

urn:sha-512:dd527b114e7c5163a585032072d6492b22fb1eab4a185211ec7565ff7103d8091e77cb54e5afee57c0db776ba265e09d61270dbe083407c2061a16f22880f5e0
Download URL:

https://repository.library.noaa.gov/view/noaa/64646/noaa_64646_DS1.pdf
File Type:

Machine readable version (XML)

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