@article{iiasa14230,
          volume = {12},
          number = {2},
           month = {December},
           title = {Bottom-up simulations of methane and ethane emissions from global oil and gas systems 1980 to 2012},
       publisher = {Institute of Physics Publishing (IOP)},
            year = {2017},
         journal = {Environmental Research Letters},
             doi = {10.1088/1748-9326/aa583e},
           pages = {e024007},
             url = {https://pure.iiasa.ac.at/id/eprint/14230/},
            issn = {1748-9326},
        abstract = {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.},
          author = {H{\"o}glund-Isaksson, L.}
}