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  1. NTU Scholars
  2. 理學院
  3. 海洋研究所
Please use this identifier to cite or link to this item: https://scholars.lib.ntu.edu.tw/handle/123456789/364462
Title: The carbonate system in the East China Sea in winter
Authors: Chou, W.-C.
Gong, G.-C.
Tseng, C.-M.
Sheu, D.D.
Hung, C.-C.
Chang, L.-P.
Wang, L.-W.
CHUN-MAO TSENG 
Keywords: CO2; East China Sea; Eutrophication
Issue Date: 2011
Journal Volume: 123
Journal Issue: 1-4
Start page/Pages: 44-55
Source: Marine Chemistry 
Abstract: 
Measurements of dissolved inorganic carbon (DIC), pH, total alkalinity (TA), and partial pressure of CO2 (pCO2) were conducted at a total of 25 stations along four cross shelf transects in the East China Sea (ECS) in January 2008. Results showed that their distributions in the surface water corresponded well to the general circulation pattern in the ECS. Low DIC and pCO2 and high pH were found in the warm and saline Kuroshio Current water flowing northeastward along the shelf break, whereas high DIC and pCO2 and low pH were mainly observed in the cold and less saline China Coastal Current water flowing southward along the coast of Mainland China. Difference between surface water and atmospheric pCO2 (δpCO2), ranging from ~0 to -111μatm, indicated that the entire ECS shelf acted as a CO2 sink during winter with an average flux of CO2 of -13.7±5.7 (mmolCm-2day-1), and is consistent with previous studies. However, pCO2 was negatively correlated with temperature for surface waters lower than 20°C, in contrast to the positive correlation found in the 1990s. Moreover, the wintertime -pCO2 in the inner shelf near the Changjiang River estuary has appreciably decreased since the early 1990s, suggesting a decline of CO2 sequestration capacity in this region. However, the actual causes for the observed relationship between these decadal changes and the increased eutrophication over recent decades are worth further study. © 2010 Elsevier B.V.
URI: http://www.scopus.com/inward/record.url?eid=2-s2.0-78650305884&partnerID=MN8TOARS
http://scholars.lib.ntu.edu.tw/handle/123456789/364462
DOI: 10.1016/j.marchem.2010.09.004
SDG/Keyword: alkalinity; carbon dioxide; carbon sequestration; carbonate system; coastal current; dissolved inorganic carbon; eutrophication; general circulation model; partial pressure; pH; shelf break; surface water; winter; China; East China Sea; Kuroshio Current; Pacific Ocean; Yangtze Estuary
[SDGs]SDG14
Appears in Collections:海洋研究所

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臺大位居世界頂尖大學之列,為永久珍藏及向國際展現本校豐碩的研究成果及學術能量,圖書館整合機構典藏(NTUR)與學術庫(AH)不同功能平台,成為臺大學術典藏NTU scholars。期能整合研究能量、促進交流合作、保存學術產出、推廣研究成果。

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