气候变化领域集成服务门户(CCPortal): Flaring efficiencies and NOx emission ratios measured for offshore oil and gas facilities in the North Sea

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DOI	10.5194/acp-23-1491-2023
	Flaring efficiencies and NOx emission ratios measured for offshore oil and gas facilities in the North Sea
	Shaw, Jacob T.; Foulds, Amy; Wilde, Shona; Barker, Patrick; Squires, Freya A.; Lee, James; Purvis, Ruth; Burton, Ralph; Colfescu, Ioana; Mobbs, Stephen; Cliff, Samuel; Bauguitte, Stephane J. -B.; Young, Stuart; Schwietzke, Stefan; Allen, Grant
发表日期	2023
ISSN	1680-7316
EISSN	1680-7324
起始页码	1491
结束页码	1509
卷号	23 期号:2 页码:19
英文摘要	Gas flaring is a substantial global source of carbon emissions to atmosphere and is targeted as a route to mitigating the oil and gas sector carbon footprint due to the waste of resources involved. However, quantifying carbon emissions from flaring is resource-intensive, and no studies have yet assessed flaring emissions for offshore regions. In this work, we present carbon dioxide (CO2), methane (CH4), ethane (C2H6), and NOx (nitrogen oxide) data from 58 emission plumes identified as gas flaring, measured during aircraft campaigns over the North Sea (UK and Norway) in 2018 and 2019. Median combustion efficiency, the efficiency with which carbon in the flared gas is converted to CO2 in the emission plume, was 98.4 % when accounting for C2H6 or 98.7 % when only accounting for CH4. Higher combustion efficiencies were measured in the Norwegian sector of the North Sea compared with the UK sector. Destruction removal efficiencies (DREs), the efficiency with which an individual species is combusted, were 98.5 % for CH4 and 97.9 % for C2H6. Median NOx emission ratios were measured to be 0.003 ppmppm(-1)CO(2) and 0.26 ppmppm(-1)CH(4), and the median C2H6:CH4 ratio was measured to be 0.11 ppmppm(-1). The highest NOx emission ratios were observed from floating production storage and offloading (FPSO) vessels, although this could potentially be due to the presence of alternative NO(x )sources on board, such as diesel generators. The measurements in this work were used to estimate total emissions from the North Sea from gas flaring of 1.4 Tgyr(-1) CO2, 6.3 Ggyr(-1) CH4, 1.7 Ggyr(-1) C2H6 and 3.9 Ggyr(-1) NOx.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000922823300001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273697
作者单位	University of Manchester; University of York - UK; University of York - UK; University of Leeds; Cranfield University; Environmental Defense Fund; National Physical Laboratory - UK; UK Research & Innovation (UKRI); Natural Environment Research Council (NERC); NERC British Antarctic Survey
推荐引用方式 GB/T 7714	Shaw, Jacob T.,Foulds, Amy,Wilde, Shona,et al. Flaring efficiencies and NOx emission ratios measured for offshore oil and gas facilities in the North Sea[J],2023,23(2):19.
APA	Shaw, Jacob T..,Foulds, Amy.,Wilde, Shona.,Barker, Patrick.,Squires, Freya A..,...&Allen, Grant.(2023).Flaring efficiencies and NOx emission ratios measured for offshore oil and gas facilities in the North Sea.ATMOSPHERIC CHEMISTRY AND PHYSICS,23(2),19.
MLA	Shaw, Jacob T.,et al."Flaring efficiencies and NOx emission ratios measured for offshore oil and gas facilities in the North Sea".ATMOSPHERIC CHEMISTRY AND PHYSICS 23.2(2023):19.