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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

文献类型：期刊论文

作者Zhang, Yong1,4; Xie, Huixiang1; Fichot, Cedric G.2; Chen, Guohua3
刊名JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
出版日期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
文献子类Article
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.
学科主题Oceanography
WOS关键词SOUTHEASTERN UNITED-STATES ; SARGASSO SEA ; UPPER OCEAN ; LIGHT-ABSORPTION ; ATLANTIC-OCEAN ; PHOTOPRODUCTION ; PHOTOREACTIONS ; COEFFICIENTS ; VARIABILITY ; CONSUMPTION
WOS研究方向Oceanography
语种英语
WOS记录号WOS:000261885800001
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)
公开日期2011-07-05
源URL[http://ir.yic.ac.cn/handle/133337/3594]  
专题烟台海岸带研究所_近岸生态与环境实验室
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.

入库方式： OAI收割

来源：烟台海岸带研究所

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