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

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋生态与环境科学重点实验室

	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
刊名	CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
	2013-09-01
卷号	31 期号:5 页码:1088-1097
关键词	carbon dioxide exchange flux continental shelf East China Sea Three Gorges Dam
ISSN号	0254-4059
通讯作者	Song, JM
中文摘要	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.
英文摘要	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.
学科主题	Marine & Freshwater Biology ; Oceanography
WOS标题词	Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
类目[WOS]	Limnology ; Oceanography
研究领域[WOS]	Marine & Freshwater Biology ; Oceanography
关键词[WOS]	YANGTZE-RIVER ; EXCHANGE ; SEAWATER ; CARBON
收录类别	SCI
原文出处	10.1007/s00343-013-2225-9
语种	英语
WOS记录号	WOS:000324111300017
公开日期	2014-07-17
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/16485]
专题	海洋研究所_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
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.