Sea surface carbon dioxide at the Georgia time series site (2006-2007): Air-sea flux and controlling processes

doi:10.1016/j.pocean.2015.09.008

	Sea surface carbon dioxide at the Georgia time series site (2006-2007): Air-sea flux and controlling processes
	Xue, Liang 1,2; Cai, Wei-Jun 2; Hu, Xinping 3; Sabine, Christopher 4; Jones, Stacy 4; Sutton, Adrienne J.4,5; Jiang, Li-Qing 6; Reimer, Janet J.2
刊名	PROGRESS IN OCEANOGRAPHY
	2016-01
卷号	140 页码:14-26
ISSN号	0079-6611
DOI	10.1016/j.pocean.2015.09.008
英文摘要	Carbon dioxide partial pressure (pCO(2)) in surface seawater was continuously recorded every three hours from 18 July 2006 through 31 October 2007 using a moored autonomous pCO(2) (MAPCO(2)) system deployed on the Gray's Reef buoy off the coast of Georgia, USA. Surface water pCO(2) (average 373 +/- 52 mu atm) showed a clear seasonal pattern, undersaturated with respect to the atmosphere in cold months and generally oversaturated in warm months. High temporal resolution observations revealed important events not captured in previous ship-based observations, such as sporadically occurring biological CO2 uptake during April-June 2007. In addition to a qualitative analysis of the primary drivers of pCO(2) variability based on property regressions, we quantified contributions of temperature, air-sea exchange, mixing, and biological processes to monthly pCO(2) variations using a 1-D mass budget model. Although temperature played a dominant role in the annual cycle of pCO(2), river inputs especially in the wet season, biological respiration in peak summer, and biological production during April-June 2007 also substantially influenced seawater pCO(2). Furthermore, sea surface pCO(2) was higher in September-October 2007 than in September-October 2006, associated with increased river inputs in fall 2007. On an annual basis this site was a moderate atmospheric CO2 sink, and was autotrophic as revealed by monthly mean net community production (NCP) in the mixed layer. If the sporadic short productive events during April-May 2007 were missed by the sampling schedule, one would conclude erroneously that the site is heterotrophic. While previous ship-based pCO(2) data collected around this buoy site agreed with the buoy CO2 data on seasonal scales, high resolution buoy observations revealed that the cruise-based surveys undersampled temporal variability in coastal waters, which could greatly bias the estimates of air-sea CO2 fluxes or annual NCP, and even produce contradictory results. (C) 2015 Elsevier Ltd. All rights reserved.
资助项目	National Natural Science Foundation of China[41506099]
WOS关键词	STATES CONTINENTAL-SHELF ; INORGANIC CARBON ; UNITED-STATES ; ESTUARINE WATERS ; PARTIAL-PRESSURE ; ATMOSPHERIC CO2 ; COASTAL OCEAN ; GAS-EXCHANGE ; SEAWATER ; PCO(2)
WOS研究方向	Oceanography
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000368221100002
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/25491]
专题	自然资源部第一海洋研究所
通讯作者	Cai, Wei-Jun
作者单位	1.State Ocean Adm, Inst Oceanog 1, Ctr Ocean & Climate Res, Qingdao 266061, Peoples R China 2.Univ Delaware, Sch Marine Sci & Policy, Newark, DE 19716 USA 3.Texas A&M Univ Corpus Christi, Dept Phys & Environm Sci, Corpus Christi, TX 78412 USA 4.NOAA, Pacific Marine Environm Lab, Seattle, WA 98115 USA 5.Univ Washington, Joint Inst Study Atmosphere & Ocean, Seattle, WA 98115 USA 6.Univ Maryland, Cooperat Inst Climate & Satellites Maryland, Earth Syst Sci Interdisciplinary Ctr, College Pk, MD 20740 USA
推荐引用方式 GB/T 7714	Xue, Liang,Cai, Wei-Jun,Hu, Xinping,et al. Sea surface carbon dioxide at the Georgia time series site (2006-2007): Air-sea flux and controlling processes[J]. PROGRESS IN OCEANOGRAPHY,2016,140:14-26.
APA	Xue, Liang.,Cai, Wei-Jun.,Hu, Xinping.,Sabine, Christopher.,Jones, Stacy.,...&Reimer, Janet J..(2016).Sea surface carbon dioxide at the Georgia time series site (2006-2007): Air-sea flux and controlling processes.PROGRESS IN OCEANOGRAPHY,140,14-26.
MLA	Xue, Liang,et al."Sea surface carbon dioxide at the Georgia time series site (2006-2007): Air-sea flux and controlling processes".PROGRESS IN OCEANOGRAPHY 140(2016):14-26.