pCO(2) distribution and CO2 flux on the inner continental shelf of the East China Sea during summer 2011

doi:10.1007/s00343-013-2225-9

	pCO(2) distribution and CO2 flux on the inner continental shelf of the East China Sea during summer 2011
	Qu Baoxiao1,2 ; Song Jinming1 ; Li Xuegang 1; Yuan Huamao 1; Li Ning 1; Ma Qingxia 1,2; Song, JM
	2013-09-01
发表期刊	CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN	0254-4059
卷号	31 期号:5 页码:1088-1097
文章类型	Article
摘要	Measurements of pH, total alkalinity (TA), partial pressure of CO2 (pCO(2)) and air-sea CO2 flux (FCO2) were conducted for the inner continental shelf of the East China Sea (ECS) during August 2011. Variations in pCO(2) distribution and FCO2 magnitude during the construction of the Three Gorges Dam (TGD) (2003-2009), and the potential effects of the TGD on the air-sea CO2 exchange were examined. Results showed that the ECS acts as an overall CO2 sink during summer, with pCO(2) ranging from 107 to 585 mu atm and an average FCO2 of -6.39 mmol/(m(2) center dot d). Low pCO(2) (< 350 mu atm) levels were observed at the central shelf (28A degrees-32A degrees N, 123A degrees-125.5A degrees E) where most CO2-absorption occurred. High pCO(2) (> 420 mu atm) levels were found in the Changjiang estuary and Hangzhou Bay which acted as the main CO2 source. A negative relationship between pCO(2) and salinity (R (2)=0.722 0) in the estuary zone indicated the predominant effect of the Changjiang Diluted Water (CDW) on the seawater CO2 system, whereas a positive relationship (R (2)=0.744 8) in the offshore zone revealed the influence of the Taiwan Current Warm Water (TCWW). Together with the historical data, our results indicated that the CO2 sink has shown a shift southwest while FCO2 exhibited dramatic fluctuation during the construction of the TGD, which is located in the middle reaches of the Changjiang. These variations probably reflect fluctuation in the Changjiang runoff, nutrient import, phytoplankton productivity, and sediment input, which are likely to have been caused by the operations of the TGD. Nevertheless, the potential influence of the TGD on the CO2 flux in the ECS is worthy of further study.; Measurements of pH, total alkalinity (TA), partial pressure of CO2 (pCO(2)) and air-sea CO2 flux (FCO2) were conducted for the inner continental shelf of the East China Sea (ECS) during August 2011. Variations in pCO(2) distribution and FCO2 magnitude during the construction of the Three Gorges Dam (TGD) (2003-2009), and the potential effects of the TGD on the air-sea CO2 exchange were examined. Results showed that the ECS acts as an overall CO2 sink during summer, with pCO(2) ranging from 107 to 585 mu atm and an average FCO2 of -6.39 mmol/(m(2) center dot d). Low pCO(2) (< 350 mu atm) levels were observed at the central shelf (28A degrees-32A degrees N, 123A degrees-125.5A degrees E) where most CO2-absorption occurred. High pCO(2) (> 420 mu atm) levels were found in the Changjiang estuary and Hangzhou Bay which acted as the main CO2 source. A negative relationship between pCO(2) and salinity (R (2)=0.722 0) in the estuary zone indicated the predominant effect of the Changjiang Diluted Water (CDW) on the seawater CO2 system, whereas a positive relationship (R (2)=0.744 8) in the offshore zone revealed the influence of the Taiwan Current Warm Water (TCWW). Together with the historical data, our results indicated that the CO2 sink has shown a shift southwest while FCO2 exhibited dramatic fluctuation during the construction of the TGD, which is located in the middle reaches of the Changjiang. These variations probably reflect fluctuation in the Changjiang runoff, nutrient import, phytoplankton productivity, and sediment input, which are likely to have been caused by the operations of the TGD. Nevertheless, the potential influence of the TGD on the CO2 flux in the ECS is worthy of further study.
关键词	Carbon Dioxide Exchange Flux Continental Shelf East China Sea Three Gorges Dam
学科领域	Marine & Freshwater Biology ; Oceanography
DOI	10.1007/s00343-013-2225-9
URL	查看原文
收录类别	SCI
语种	英语
WOS研究方向	Marine & Freshwater Biology ; Oceanography
WOS类目	Limnology ; Oceanography
WOS记录号	WOS:000324111300017
WOS关键词	YANGTZE-RIVER ; EXCHANGE ; SEAWATER ; CARBON
WOS标题词	Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
引用统计	被引频次：10[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/16485
专题	海洋生态与环境科学重点实验室
通讯作者	Song, JM
作者单位	1.Chinese Acad Sci, Inst Oceanog, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
第一作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Qu Baoxiao,Song Jinming,Li Xuegang,et al. pCO(2) distribution and CO2 flux on the inner continental shelf of the East China Sea during summer 2011[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2013,31(5):1088-1097.
APA	Qu Baoxiao.,Song Jinming.,Li Xuegang.,Yuan Huamao.,Li Ning.,...&Song, JM.(2013).pCO(2) distribution and CO2 flux on the inner continental shelf of the East China Sea during summer 2011.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,31(5),1088-1097.
MLA	Qu Baoxiao,et al."pCO(2) distribution and CO2 flux on the inner continental shelf of the East China Sea during summer 2011".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 31.5(2013):1088-1097.

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