气候变化领域集成服务门户(CCPortal): Reversal of Increasing Tropical Ocean Hypoxia Trends With Sustained Climate Warming

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DOI	10.1002/2017GB005788
	Reversal of Increasing Tropical Ocean Hypoxia Trends With Sustained Climate Warming
	Fu W.; Primeau F.; Keith Moore J.; Lindsay K.; Randerson J.T.
发表日期	2018
ISSN	0886-6236
EISSN	1944-9224
起始页码	551
结束页码	564
卷号	32 期号:4
英文摘要	Dissolved oxygen (O2) is essential for the survival of marine animals. Climate change impacts on future oxygen distributions could modify species biogeography, trophic interactions, biodiversity, and biogeochemistry. The Coupled Model Intercomparison Project Phase 5 models predict a decreasing trend in marine O2 over the 21st century. Here we show that this increasing hypoxia trend reverses in the tropics after 2100 in the Community Earth System Model forced by atmospheric CO2 from the Representative Concentration Pathway 8.5 and Extended Concentration Pathway 8.5. In tropical intermediate waters between 200 and 1,000 m, the model predicts a steady decline of O2 and an expansion of oxygen minimum zones (OMZs) during the 21st century. By 2150, however, the trend reverses with oxygen concentration increasing and OMZ volume shrinking through 2300. A novel five-box model approach in conjunction with output from the full Earth system model is used to separate the contributions of biological and physical processes to the trends in tropical oxygen. The tropical O2 recovery is caused mainly by reductions in tropical biological export, coupled with a modest increase in ventilation after 2200. The time-evolving oxygen distribution impacts marine nitrogen cycling, with potentially important climate feedbacks. ©2018. American Geophysical Union. All Rights Reserved.
英文关键词	climate warming; hypoxia; intermediate water; nutrient trapping; Southern Ocean; ventilation
语种	英语
scopus关键词	climate change; climate effect; climate modeling; CMIP; concentration (composition); dissolved oxygen; hypoxia; intermediate water; nitrogen cycle; nutrient cycling; oxygen minimum layer; ventilation; Southern Ocean; Animalia
来源期刊	Global Biogeochemical Cycles
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/129840
作者单位	Department of Earth System Science, University of California, Irvine, CA, United States; Climate and Global Dynamics Division, National Center for Atmosphere Research, Boulder, CO, United States
推荐引用方式 GB/T 7714	Fu W.,Primeau F.,Keith Moore J.,et al. Reversal of Increasing Tropical Ocean Hypoxia Trends With Sustained Climate Warming[J],2018,32(4).
APA	Fu W.,Primeau F.,Keith Moore J.,Lindsay K.,&Randerson J.T..(2018).Reversal of Increasing Tropical Ocean Hypoxia Trends With Sustained Climate Warming.Global Biogeochemical Cycles,32(4).
MLA	Fu W.,et al."Reversal of Increasing Tropical Ocean Hypoxia Trends With Sustained Climate Warming".Global Biogeochemical Cycles 32.4(2018).