气候变化领域集成服务门户(CCPortal): Mesoscale Eddy Variability Enhances Fixed Nitrogen Loss and Suppresses Nitrous Oxide Production in Oxygen Minimum Zones

CCPortal

DOI	10.1029/2023GL106179
	Mesoscale Eddy Variability Enhances Fixed Nitrogen Loss and Suppresses Nitrous Oxide Production in Oxygen Minimum Zones
	McCoy, Daniel; Damien, Pierre; Yang, Simon; Bianchi, Daniele
发表日期	2024
ISSN	0094-8276
EISSN	1944-8007
起始页码	51
结束页码	7
卷号	51 期号:7
英文摘要	Within oxygen minimum zones, anaerobic processes transform bioavailable nitrogen (N) into the gases dinitrogen (N-2) and nitrous oxide (N2O), a potent greenhouse gas. Mesoscale eddies in these regions create heterogeneity in dissolved N tracers and O-2 concentrations, influencing nonlinear N cycle reactions that depend on them. Here, we use an eddy-resolving model of the Eastern Tropical South Pacific to show that eddies enhance N-2 production by between 43% and 64% at the expense of reducing N2O production by between 94% and 104% due to both the steep increase of progressive denitrification steps at vanishing oxygen, and the more effective inhibition of N2O consumption relative to production. Our findings reveal the critical role of eddies in shaping the N cycle of oxygen minimum zones, which is not currently represented by coarse models used for climate studies.
英文关键词	oxygen minimum zones; mesoscale eddies; nitrogen cycling; N2O production; biogeochemical modeling; physical biogeochemical interactions
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:001194387400001
来源期刊	GEOPHYSICAL RESEARCH LETTERS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/292792
作者单位	University of California System; University of California Los Angeles
推荐引用方式 GB/T 7714	McCoy, Daniel,Damien, Pierre,Yang, Simon,et al. Mesoscale Eddy Variability Enhances Fixed Nitrogen Loss and Suppresses Nitrous Oxide Production in Oxygen Minimum Zones[J],2024,51(7).
APA	McCoy, Daniel,Damien, Pierre,Yang, Simon,&Bianchi, Daniele.(2024).Mesoscale Eddy Variability Enhances Fixed Nitrogen Loss and Suppresses Nitrous Oxide Production in Oxygen Minimum Zones.GEOPHYSICAL RESEARCH LETTERS,51(7).
MLA	McCoy, Daniel,et al."Mesoscale Eddy Variability Enhances Fixed Nitrogen Loss and Suppresses Nitrous Oxide Production in Oxygen Minimum Zones".GEOPHYSICAL RESEARCH LETTERS 51.7(2024).