relation: https://pure.iiasa.ac.at/id/eprint/14230/ title: Bottom-up simulations of methane and ethane emissions from global oil and gas systems 1980 to 2012 creator: Höglund-Isaksson, L. description: Existing bottom-up emission inventories of methane from global oil and gas systems do not well 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. publisher: Institute of Physics Publishing (IOP) date: 2017-12-20 type: Article type: PeerReviewed format: text language: en identifier: https://pure.iiasa.ac.at/id/eprint/14230/3/H%25C3%25B6glund-Isaksson_2017_Environ._Res._Lett._12_024007.pdf format: other language: en rights: cc_by identifier: https://pure.iiasa.ac.at/id/eprint/14230/9/erlaa583e_suppdataset.xlsx format: text language: en rights: cc_by identifier: https://pure.iiasa.ac.at/id/eprint/14230/10/erlaa583e_suppdata.pdf identifier: Höglund-Isaksson, L. ORCID: https://orcid.org/0000-0001-7514-3135 (2017). Bottom-up simulations of methane and ethane emissions from global oil and gas systems 1980 to 2012. Environmental Research Letters 12 (2) e024007. 10.1088/1748-9326/aa583e . relation: 10.1088/1748-9326/aa583e identifier: 10.1088/1748-9326/aa583e doi: 10.1088/1748-9326/aa583e