Bottom-up simulations of methane and ethane emissions from global oil and gas systems 1980 to 2012
Bottom-up simulations of methane and ethane emissions from global oil and gas systems 1980 to 2012
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DOI：
10.1088/1748-9326/aa583e
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发表时间：
2017-02-01
影响因子：
6.7
通讯作者：
Hoglund-Isaksson, Lena
中科院分区：
文献类型：
--
作者：
Hoglund-Isaksson, Lena
现有的由下而上的全球油气系统甲烷排放清单不能令人满意地解释由上而下模式估算的大气甲烷的逐年变化。本研究采用了一种新颖的自下而上的方法，量化了1980年至2012年全球油气生产过程中甲烷和乙烷的排放量。将已公布来源伴生气流量的国别信息与1994年至2010年卫星图像观测到的伴生气燃除的年际变化相结合，得出国别伴生气流量甲烷和乙烷排放量的年度估计数。结果证实了自上而下模型的趋势，并表明石油生产产生的甲烷和乙烷排放量比之前自下而上清单所显示的要高得多。
Existing bottom-up emission inventories of methane from global oil and gas systems do not satisfactorily explain year-on-year variation in atmospheric methane estimated by top-down models. Using a novel bottom-up approach this study quantifies and attributes methane and ethane emissions from global oil and gas production from 1980 to 2012. Country-specific information on associated gas flows from published sources are combined with inter-annual variations in observed flaring of associated gas from satellite images from 1994 to 2010, to arrive at country-specific annual estimates of methane and ethane emissions from flows of associated gas. Results confirm trends from top-down models and indicate considerably higher methane and ethane emissions from oil production than previously shown in bottom-up inventories for this time period.