气候变化领域集成服务门户(CCPortal): Rapid nitrous oxide cycling in the suboxic ocean

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DOI	10.1126/science.aaa8380
	Rapid nitrous oxide cycling in the suboxic ocean
	Babbin A.R.; Bianchi D.; Jayakumar A.; Ward B.B.
发表日期	2015
ISSN	0036-8075
起始页码	1127
结束页码	1129
卷号	348 期号:6239
英文摘要	Nitrous oxide (N2O) is a powerful greenhouse gas and a major cause of stratospheric ozone depletion, yet its sources and sinks remain poorly quantified in the oceans. We used isotope tracers to directly measure N2O reduction rates in the eastern tropical North Pacific. Because of incomplete denitrification, N2O cycling rates are an order of magnitude higher than predicted by current models in suboxic regions, and the spatial distribution suggests strong dependence on both organic carbon and dissolved oxygen concentrations. Furthermore, N2O turnover is 20 times higher than the net atmospheric efflux. The rapid rate of this cycling coupled to an expected expansion of suboxic ocean waters implies future increases in N2O emissions.
英文关键词	ammonia; dissolved oxygen; nitrous oxide; nitrous oxide reductase; organic carbon; oxygen; nitrous oxide; sea water; denitrification; dissolved oxygen; greenhouse gas; isotopic composition; nitrous oxide; nutrient cycling; organic carbon; spatial distribution; suboxic conditions; tracer; algal bloom; Article; biogeochemistry; climate change; denitrification; deoxygenation; El Nino; nitrification; nitrogen cycling; oxygen concentration; oxygen poisoning; ozone depletion; priority journal; sea; thermocline; turnover time; animal; chemistry; greenhouse effect; nitrogen cycle; oxidation reduction reaction; sea; Pacific Ocean; Pacific Ocean (North); Animals; Greenhouse Effect; Nitrogen Cycle; Nitrous Oxide; Oceans and Seas; Oxidation-Reduction; Oxygen; Seawater
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/242917
作者单位	Department of Geosciences, Princeton University, Princeton, NJ 08544, United States; Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States; School of Oceanography, University of Washington, Seattle, WA 98105, United States
推荐引用方式 GB/T 7714	Babbin A.R.,Bianchi D.,Jayakumar A.,et al. Rapid nitrous oxide cycling in the suboxic ocean[J],2015,348(6239).
APA	Babbin A.R.,Bianchi D.,Jayakumar A.,&Ward B.B..(2015).Rapid nitrous oxide cycling in the suboxic ocean.Science,348(6239).
MLA	Babbin A.R.,et al."Rapid nitrous oxide cycling in the suboxic ocean".Science 348.6239(2015).