@article{29605,
  author = {Seongeun Jeong and Xinguang Cui and Donald R Blake and Benjamin R Miller and Stephen A Montzka and Arlyn E Andrews and Abhinav Guha and Philip T Martien and Ray P Bambha and Brian W LaFranchi and Hope A Michelsen and Craig B Clements and Pierre Glaize and Marc L Fischer},
  title = {Estimating methane emissions from biological and fossil-fuel sources in the San Francisco Bay Area},
  abstract = {<p>We present the first sector-specific analysis of methane (CH<sub>4</sub>) emissions from the San Francisco Bay Area (SFBA) using CH<sub>4</sub> and volatile organic compound (VOC) measurements from six sites during September – December 2015. We apply a hierarchical Bayesian inversion to separate the biological from fossil-fuel (natural gas and petroleum) sources using the measurements of CH<sub>4</sub> and selected VOCs, a source-specific 1 km CH<sub>4</sub> emission model, and an atmospheric transport model. We estimate that SFBA CH<sub>4</sub> emissions are 166–289 Gg CH<sub>4</sub>/yr (at 95% confidence), 1.3–2.3 times higher than a recent inventory with much of the underestimation from landfill. Including the VOCs, 82 
 27% of total posterior median CH4 emissions are biological and 17 
 3% fossil fuel, where landfill and natural gas dominate the biological and fossil-fuel CH<sub>4</sub> of prior emissions, respectively.</p>},
  year = {2017},
  journal = {Geophysical Research Letters},
  edition = {2},
  pages = {486 - 495},
  month = {01/2017},
  doi = {10.1002/2016GL071794},
}