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Comparison of carbonate parameters and air-sea CO2 flux in the southern Yellow Sea and East China Sea during spring and summer of 2011
Qu, Baoxiao1,2; Song, Jinming1,2; Yuan, Huamao1,2; Li, Xuegang1,2; Li, Ning1,2; Duan, Liqin1,2
2017-06-01
Source PublicationJOURNAL OF OCEANOGRAPHY
Volume73Issue:3Pages:365-382
SubtypeArticle
AbstractIn this work, we examined the carbonate parameters, i.e. total alkalinity (TA), pH, and partial pressure of CO2 (pCO(2)), and the air-sea CO2 flux (FCO2) in the continental shelves of the southern Yellow Sea (SYS) and East China Sea (ECS), based on two field surveys conducted in April and August of 2011. Surface pCO(2) showed significant spatial variations, ranging from 246 to 686 A mu atm in spring (average +/- standard deviation = 379 +/- 95 A mu atm) and from 178 to 680 A mu atm in summer (384 +/- 114 A mu atm). During the spring cruise, the central SYS (pCO(2) < 240 A mu atm) and the Changjiang estuary (pCO(2) < 300 A mu atm) were under-saturated with CO2, while the southern SYS and the southwestern ECS were supersaturated (pCO(2) = 420-680 A mu atm). In summer, however, the CO2-supersaturated waters (pCO(2) = 380-680 A mu atm) occupied a relatively wide area, including the nearshore of the SYS and the Changjiang estuary, whereas pCO(2)-deficient water (pCO(2) = 220-380 A mu atm) was observed only at the offshore ECS. In general, the entire SYS and ECS area behaved as a sustained CO2 sink, with average FCO2 of -3.9 and -2.1 mmol m(-2) d(-1) in spring and summer, respectively. Phytoplankton production was the driving force for CO2 absorption, especially during the spring cruise. In addition, we found that typical water mixing processes and decomposition of terrestrial material were responsible for the release of CO2 in three turbidity maximum regions.
KeywordCarbon Dioxide Air-sea Gas Exchange Continental Shelf Southern Yellow Sea East China Sea Yangtze River
DOI10.1007/s10872-016-0409-6
Indexed BySCI
Language英语
WOS IDWOS:000401432100007
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Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/136851
Collection海洋生态与环境科学重点实验室
Affiliation1.Chinese Acad Sci, Inst Oceanol, Qingdao, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Qingdao, Peoples R China
First Author Affilication中国科学院海洋研究所
Recommended Citation
GB/T 7714
Qu, Baoxiao,Song, Jinming,Yuan, Huamao,et al. Comparison of carbonate parameters and air-sea CO2 flux in the southern Yellow Sea and East China Sea during spring and summer of 2011[J]. JOURNAL OF OCEANOGRAPHY,2017,73(3):365-382.
APA Qu, Baoxiao,Song, Jinming,Yuan, Huamao,Li, Xuegang,Li, Ning,&Duan, Liqin.(2017).Comparison of carbonate parameters and air-sea CO2 flux in the southern Yellow Sea and East China Sea during spring and summer of 2011.JOURNAL OF OCEANOGRAPHY,73(3),365-382.
MLA Qu, Baoxiao,et al."Comparison of carbonate parameters and air-sea CO2 flux in the southern Yellow Sea and East China Sea during spring and summer of 2011".JOURNAL OF OCEANOGRAPHY 73.3(2017):365-382.
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