气候变化领域集成服务门户(CCPortal): Methane emissions from oil and gas platforms in the North Sea

CCPortal

DOI	10.5194/acp-19-9787-2019
	Methane emissions from oil and gas platforms in the North Sea
	Riddick S.N.; Mauzeral D.L.; Celia M.; Harris N.R.P.; Allen G.; Pitt J.; Staunton-Sykes J.; Forster G.L.; Kang M.; Lowry D.; Nisbet E.G.; Manning A.J.
发表日期	2019
ISSN	16807316
起始页码	9787
结束页码	9796
卷号	19 期号:15
英文摘要	Since 1850 the concentration of atmospheric methane (CH4), a potent greenhouse gas, has more than doubled. Recent studies suggest that emission inventories may be missing sources and underestimating emissions. To investigate whether offshore oil and gas platforms leak CH4 during normal operation, we measured CH4 mole fractions around eight oil and gas production platforms in the North Sea which were neither flaring gas nor offloading oil. We use the measurements from summer 2017, along with meteorological data, in a Gaussian plume model to estimate CH4 emissions from each platform. We find CH4 mole fractions of between 11 and 370 ppb above background concentrations downwind of the platforms measured, corresponding to a median CH4 emission of 6.8 gCH4 s-1 for each platform, with a range of 2.9 to 22.3 gCH4 s-1. When matched to production records, during our measurements individual platforms lost between 0.04% and 1.4% of gas produced with a median loss of 0.23 %. When the measured platforms are considered collectively (i.e. the sum of platforms' emission fluxes weighted by the sum of the platforms' production), we estimate the CH4 loss to be 0.19% of gas production. These estimates are substantially higher than the emissions most recently reported to the National Atmospheric Emission Inventory (NAEI) for total CH4 loss from United Kingdom platforms in the North Sea. The NAEI reports CH4 losses from the offshore oil and gas platforms we measured to be 0.13% of gas production, with most of their emissions coming from gas flaring and offshore oil loading, neither of which was taking place at the time of our measurements. All oil and gas platforms we observed were found to leak CH4 during normal operation, and much of this leakage has not been included in UK emission inventories. Further research is required to accurately determine total CH4 leakage from all offshore oil and gas operations and to properly include the leakage in national and international emission inventories. © Author(s) 2019.
语种	英语
scopus关键词	atmospheric modeling; atmospheric plume; emission inventory; gas platform; gas production; greenhouse gas; methane; oil platform; oil production; Atlantic Ocean; North Sea; United Kingdom
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/144237
作者单位	Department of Civil and Environmental Engineering, Princeton University, Princeton, 08544, United States; Woodrow Wilson School of Public and International Affairs, Princeton University, Princeton, 08544, United States; Centre for Environmental and Agricultural Informatics, Cranfield University, Cranfield, MK430AL, United Kingdom; Centre for Atmospheric Science, University of Manchester, Manchester, M139PL, United Kingdom; Centre for Atmospheric Science, University of Cambridge, Cambridge, CB21EW, United Kingdom; National Centre for Atmospheric Science, University of East Anglia, Norwich, NR47TJ, United Kingdom; Department of Civil Engineering and Applied Mechanics, McGill University, Montreal, H3A0C3, Canada; Department of Earth Sciences, Royal Holloway, University of London, Egham, TW200EX, United Kingdom; Met Office, Exeter, EX13PB, United Kingdom
推荐引用方式 GB/T 7714	Riddick S.N.,Mauzeral D.L.,Celia M.,et al. Methane emissions from oil and gas platforms in the North Sea[J],2019,19(15).
APA	Riddick S.N..,Mauzeral D.L..,Celia M..,Harris N.R.P..,Allen G..,...&Manning A.J..(2019).Methane emissions from oil and gas platforms in the North Sea.Atmospheric Chemistry and Physics,19(15).
MLA	Riddick S.N.,et al."Methane emissions from oil and gas platforms in the North Sea".Atmospheric Chemistry and Physics 19.15(2019).