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.
Original Source [2]
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/bottom-simulations-methane-and-ethane-emissions-global-oil-and-gas-systems-1980-2012
[2] http://iopscience.iop.org/article/10.1088/1748-9326/aa583e/meta
[3] http://admin.indiaenvironmentportal.org.in/category/author/lena-h%C3%B6glund-isaksson
[4] http://admin.indiaenvironmentportal.org.in/category/journal/environmental-research-letters
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/methane
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/fossil-fuels
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/canada
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/natural-gas
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/russia
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/china
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/global
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-change