Inorganic carbon speciation and fluxes in the Congo River
Author Posting. © American Geophysical Union, 2013. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 40 (2013): 511–516, doi:10.1002/grl.50160. Seasonal variations in...
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/5930 2023-05-15T15:52:50+02:00 Inorganic carbon speciation and fluxes in the Congo River Wang, Zhaohui Aleck Bienvenu, Dinga Jean Mann, Paul J. Hoering, Katherine A. Poulsen, John R. Spencer, Robert G. M. Holmes, Robert M. 2013-02-14 application/pdf https://hdl.handle.net/1912/5930 en_US eng John Wiley & Sons https://doi.org/10.1002/grl.50160 Geophysical Research Letters 40 (2013): 511–516 https://hdl.handle.net/1912/5930 doi:10.1002/grl.50160 Geophysical Research Letters 40 (2013): 511–516 doi:10.1002/grl.50160 Inorganic carbon Carbon dioxide Carbon fluxes pH Alkalinity Congo River Article 2013 ftwhoas https://doi.org/10.1002/grl.50160 2022-05-28T22:58:52Z Author Posting. © American Geophysical Union, 2013. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 40 (2013): 511–516, doi:10.1002/grl.50160. Seasonal variations in inorganic carbon chemistry and associated fluxes from the Congo River were investigated at Brazzaville-Kinshasa. Small seasonal variation in dissolved inorganic carbon (DIC) was found in contrast with discharge-correlated changes in pH, total alkalinity (TA), carbonate species, and dissolved organic carbon (DOC). DIC was almost always greater than TA due to the importance of CO2*, the sum of dissolved CO2 and carbonic acid, as a result of low pH. Organic acids in DOC contributed 11–61% of TA and had a strong titration effect on water pH and carbonate speciation. The CO2* and bicarbonate fluxes accounted for ~57% and 43% of the DIC flux, respectively. Congo River surface water released CO2 at a rate of ~109 mol m−2 yr−1. The basin-wide DIC yield was ~8.84 × 104 mol km−2 yr−1. The discharge normalized DIC flux to the ocean amounted to 3.11 × 1011 mol yr−1. The DOC titration effect on the inorganic carbon system may also be important on a global scale for regulating carbon fluxes in rivers. This project was supported by a grant from the National Science Foundation for the Global Rivers Project (NSF 0851101). 2013-08-14 Article in Journal/Newspaper Carbonic acid Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Geophysical Research Letters 40 3 511 516 |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
English |
topic |
Inorganic carbon Carbon dioxide Carbon fluxes pH Alkalinity Congo River |
spellingShingle |
Inorganic carbon Carbon dioxide Carbon fluxes pH Alkalinity Congo River Wang, Zhaohui Aleck Bienvenu, Dinga Jean Mann, Paul J. Hoering, Katherine A. Poulsen, John R. Spencer, Robert G. M. Holmes, Robert M. Inorganic carbon speciation and fluxes in the Congo River |
topic_facet |
Inorganic carbon Carbon dioxide Carbon fluxes pH Alkalinity Congo River |
description |
Author Posting. © American Geophysical Union, 2013. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 40 (2013): 511–516, doi:10.1002/grl.50160. Seasonal variations in inorganic carbon chemistry and associated fluxes from the Congo River were investigated at Brazzaville-Kinshasa. Small seasonal variation in dissolved inorganic carbon (DIC) was found in contrast with discharge-correlated changes in pH, total alkalinity (TA), carbonate species, and dissolved organic carbon (DOC). DIC was almost always greater than TA due to the importance of CO2*, the sum of dissolved CO2 and carbonic acid, as a result of low pH. Organic acids in DOC contributed 11–61% of TA and had a strong titration effect on water pH and carbonate speciation. The CO2* and bicarbonate fluxes accounted for ~57% and 43% of the DIC flux, respectively. Congo River surface water released CO2 at a rate of ~109 mol m−2 yr−1. The basin-wide DIC yield was ~8.84 × 104 mol km−2 yr−1. The discharge normalized DIC flux to the ocean amounted to 3.11 × 1011 mol yr−1. The DOC titration effect on the inorganic carbon system may also be important on a global scale for regulating carbon fluxes in rivers. This project was supported by a grant from the National Science Foundation for the Global Rivers Project (NSF 0851101). 2013-08-14 |
format |
Article in Journal/Newspaper |
author |
Wang, Zhaohui Aleck Bienvenu, Dinga Jean Mann, Paul J. Hoering, Katherine A. Poulsen, John R. Spencer, Robert G. M. Holmes, Robert M. |
author_facet |
Wang, Zhaohui Aleck Bienvenu, Dinga Jean Mann, Paul J. Hoering, Katherine A. Poulsen, John R. Spencer, Robert G. M. Holmes, Robert M. |
author_sort |
Wang, Zhaohui Aleck |
title |
Inorganic carbon speciation and fluxes in the Congo River |
title_short |
Inorganic carbon speciation and fluxes in the Congo River |
title_full |
Inorganic carbon speciation and fluxes in the Congo River |
title_fullStr |
Inorganic carbon speciation and fluxes in the Congo River |
title_full_unstemmed |
Inorganic carbon speciation and fluxes in the Congo River |
title_sort |
inorganic carbon speciation and fluxes in the congo river |
publisher |
John Wiley & Sons |
publishDate |
2013 |
url |
https://hdl.handle.net/1912/5930 |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_source |
Geophysical Research Letters 40 (2013): 511–516 doi:10.1002/grl.50160 |
op_relation |
https://doi.org/10.1002/grl.50160 Geophysical Research Letters 40 (2013): 511–516 https://hdl.handle.net/1912/5930 doi:10.1002/grl.50160 |
op_doi |
https://doi.org/10.1002/grl.50160 |
container_title |
Geophysical Research Letters |
container_volume |
40 |
container_issue |
3 |
container_start_page |
511 |
op_container_end_page |
516 |
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1766387941555306496 |