气候变化领域集成服务门户(CCPortal): Interannual-to-Decadal Variations of Particulate Organic Carbon and the Contribution of Phytoplankton in the Tropical Pacific During 1981

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DOI	10.1029/2020JC016515
	Interannual-to-Decadal Variations of Particulate Organic Carbon and the Contribution of Phytoplankton in the Tropical Pacific During 1981–2016: A Model Study
	Yu J.; Wang X.; Murtugudde R.; Tian F.; Zhang R.-H.
发表日期	2021
ISSN	21699275
卷号	126 期号:1
英文摘要	The tropical Pacific plays an important role in the global carbon cycle. However, little is known on the large-scale variability of particulate organic carbon (POC) and the contribution of phytoplankton carbon (PhyC) in this region. Here, we used a basin-scale model to study the spatio-temporal variability of POC and PhyC contribution over 1981–2016 in the tropical Pacific. The model reproduces the spatial and temporal variability of the observed POC in this region. Both satellite and modeled POC show a clear west-to-east increase (from 40 to 60 mg m−3) in the equatorial Pacific. The contribution of PhyC to POC is greater in the iron-limited eastern region (∼30%) than in the nitrogen-limited western region (∼20%). There are strong interannual variabilities in both POC and the contribution of PhyC to POC, which are largely associated with the El Niño–Southern Oscillation (ENSO) events. POC stock and downward flux show significant increases (10%–20%) in the frontal region (near the dateline) but smaller changes in the eastern equatorial Pacific post-1998, due to the Pacific Decadal Oscillation (PDO) regime shift. There were significant increases (∼5–10% to the west and ∼5% to the east) in the transfer efficiency of POC across the basin during 1999–2014 due to the PDO regime shift. This study highlights the impacts of iron and nitrogen co-limitations on phytoplankton dynamics and physical forcing on the carbon cycle of the tropical Pacific, with implications for the global carbon cycle. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	climate impact; decadal variability; interannal variability; particulate organic carbon; phytoplankton contribution; tropical Pacific
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186520
作者单位	College of Global Change and Earth System Science, Beijing Normal University, Beijing, China; Earth System Science Interdisciplinary Center, University of Maryland, College ParkMD, United States; Key Laboratory of Ocean Circulation and Waves, Institute of Oceanology, and Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, Shandong, China; Laboratory for Ocean and Climate Dynamics, Pilot National Laboratory for Marine Science and Technology, Qingdao, China; Center for Excellence in Quaternary Science and Global Change, Chinese Academy of Sciences, Qingdao, China; University of Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Yu J.,Wang X.,Murtugudde R.,等. Interannual-to-Decadal Variations of Particulate Organic Carbon and the Contribution of Phytoplankton in the Tropical Pacific During 1981–2016: A Model Study[J],2021,126(1).
APA	Yu J.,Wang X.,Murtugudde R.,Tian F.,&Zhang R.-H..(2021).Interannual-to-Decadal Variations of Particulate Organic Carbon and the Contribution of Phytoplankton in the Tropical Pacific During 1981–2016: A Model Study.Journal of Geophysical Research: Oceans,126(1).
MLA	Yu J.,et al."Interannual-to-Decadal Variations of Particulate Organic Carbon and the Contribution of Phytoplankton in the Tropical Pacific During 1981–2016: A Model Study".Journal of Geophysical Research: Oceans 126.1(2021).