气候变化领域集成服务门户(CCPortal): Potential Underestimate in Reported Bottom-up Methane Emissions from Oil and Gas Operations in the Delaware Basin

CCPortal

DOI	10.3390/atmos15020202
	Potential Underestimate in Reported Bottom-up Methane Emissions from Oil and Gas Operations in the Delaware Basin
	Riddick, Stuart N.; Mbua, Mercy; Santos, Arthur; Hartzell, Wendy; Zimmerle, Daniel J.
发表日期	2024
EISSN	2073-4433
起始页码	15
结束页码	2
卷号	15 期号:2
英文摘要	Methane is a greenhouse gas and identified as a key driver of near-term climate change. Bottom-up approaches estimate annual methane loss from US natural gas production and transport at 6 Tg, but recent studies suggest this may be an underestimate. To investigate this possibility, an equipment-based emissions inventory, using EPA emission factors, was developed to calculate methane emissions from oil and gas operations in the Delaware basin, USA. Emission factors and activity data were then updated using contemporary and region-specific measurement data. The original inventory estimated emissions at 315 Gg CH4 y-1 (gas production-normalized rate of 0.6% loss), while the updated inventory estimated emissions of 1500 Gg CH4 y-1 (2.8% loss). The largest changes resulted from large fugitive emissions from oil production (+430 Gg CH4 y-1), updating maintenance activity emissions (+214 Gg CH4 y-1), considering flaring inefficiency (+174 Gg CH4 y-1), and the inclusion of associated gas venting (+136 Gg CH4 y-1). This study suggests that a systematic underestimate probably exists in current bottom-up inventories and identifies sources currently missing or may be incorrect. We also strongly recommend that emission factors should be validated through direct comparison against measurement campaigns that include long-tail distributions typical of oil and gas activities.
英文关键词	methane; inventory; bottom-up; reconciliation; oil and gas
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:001172108600001
来源期刊	ATMOSPHERE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/297452
作者单位	Colorado State University
推荐引用方式 GB/T 7714	Riddick, Stuart N.,Mbua, Mercy,Santos, Arthur,et al. Potential Underestimate in Reported Bottom-up Methane Emissions from Oil and Gas Operations in the Delaware Basin[J],2024,15(2).
APA	Riddick, Stuart N.,Mbua, Mercy,Santos, Arthur,Hartzell, Wendy,&Zimmerle, Daniel J..(2024).Potential Underestimate in Reported Bottom-up Methane Emissions from Oil and Gas Operations in the Delaware Basin.ATMOSPHERE,15(2).
MLA	Riddick, Stuart N.,et al."Potential Underestimate in Reported Bottom-up Methane Emissions from Oil and Gas Operations in the Delaware Basin".ATMOSPHERE 15.2(2024).