| Dark production of carbon monoxide (CO) from dissolved organic matter in the St. Lawrence estuarine system: Implication for the global coastal and blue water CO budgets | |
Zhang, Yong1,4 ; Xie, Huixiang1; Fichot, Cedric G.2; Chen, Guohua3
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| 发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
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| 2008-12-19 | |
| 卷号 | 113期号:C12页码:0148-0227 |
| 关键词 | Southeastern United-states Sargasso Sea Upper Ocean Light-absorption Atlantic-ocean Photoproduction Photoreactions Coefficients Variability Consumption |
| 产权排序 | Univ Quebec, Inst Sci Mer Rimouski, Rimouski, PQ G5L 3A1, Canada; Univ Georgia, Dept Marine Sci; Ocean Univ Qingdao, Coll Chem & Chem Engn; Chinese Acad Sci, Yantai Inst Coastal Zone Res Sustainable Dev |
| 通讯作者 | Zhang, Y |
| 作者部门 | 近岸生态与环境试验室 |
| 英文摘要 | We investigated the thermal (dark) production of carbon monoxide (CO) from dissolved organic matter (DOM) in the water column of the St. Lawrence estuarine system in spring 2007. The production rate, Q(co), decreased seaward horizontally and downward vertically. Q(co) exhibited a positive, linear correlation with the abundance of chromophoric dissolved organic matter (CDOM). Terrestrial DOM was more efficient at producing CO than marine DOM. The temperature dependence of Q(co) can be characterized by the Arrhenius equation with the activation energies of freshwater samples being higher than those of salty samples. Q(co) remained relatively constant between pH 4-6, increased slowly between pH 6-8 and then rapidly with further rising pH. Ionic strength and iron chemistry had little influence on Q(co). An empirical equation, describing Q(co) as a function of CDOM abundance, temperature, pH, and salinity, was established to evaluate CO dark production in the global coastal waters (depth < 200 m). The total coastal CO dark production from DOM was estimated to be from 0.46 to 1.50 Tg CO-C a(-1) (Tg carbon from CO a(-1)). We speculated the global oceanic (coastal plus open ocean) CO dark production to be in the range from 4.87 to 15.8 Tg CO-C a(-1) by extrapolating the coastal water-based results to blue waters (depth > 200 m). Both the coastal and global dark source strengths are significant compared to the corresponding photochemical CO source strengths (coastal: similar to 2.9 Tg CO-C a(-1); global: similar to 50 Tg CO-C a(-1)). Steady state deepwater CO concentrations inferred from Q(co) and microbial CO uptake rates are < 0.1 nmol L-1. |
| 文章类型 | Article |
| 资助机构 | Natural Sciences and Engineering Research Council of Canada (NSERC) ; Canada Foundation for Innovation (CFI) ; Institut des Sciences de la Mer de Rimouski (ISMER) |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | SOUTHEASTERN UNITED-STATES ; SARGASSO SEA ; UPPER OCEAN ; LIGHT-ABSORPTION ; ATLANTIC-OCEAN ; PHOTOPRODUCTION ; PHOTOREACTIONS ; COEFFICIENTS ; VARIABILITY ; CONSUMPTION |
| 研究领域[WOS] | Oceanography |
| WOS记录号 | WOS:000261885800001 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/3593 |
| 专题 | 中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室 |
| 作者单位 | 1.Univ Quebec, Inst Sci Mer Rimouski, Rimouski, PQ G5L 3A1, Canada 2.Univ Georgia, Dept Marine Sci, Athens, GA 30602 USA 3.Ocean Univ China, Coll Chem & Chem Engn, Qingdao 266100, Peoples R China 4.Chinese Acad Sci, Yantai Inst Coastal Zone Res Sustainable Dev, Yantai, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Yong,Xie, Huixiang,Fichot, Cedric G.,et al. Dark production of carbon monoxide (CO) from dissolved organic matter in the St. Lawrence estuarine system: Implication for the global coastal and blue water CO budgets[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2008,113(C12):0148-0227. |
| APA | Zhang, Yong,Xie, Huixiang,Fichot, Cedric G.,&Chen, Guohua.(2008).Dark production of carbon monoxide (CO) from dissolved organic matter in the St. Lawrence estuarine system: Implication for the global coastal and blue water CO budgets.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,113(C12),0148-0227. |
| MLA | Zhang, Yong,et al."Dark production of carbon monoxide (CO) from dissolved organic matter in the St. Lawrence estuarine system: Implication for the global coastal and blue water CO budgets".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 113.C12(2008):0148-0227. |
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