selected publications

• journal article

  • What do we know about the global methane budget? Results from four decades of atmospheric CH4 observations and the way forward.  Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences. 2021
  • Improved Constraints on Global Methane Emissions and Sinks Using delta C-13-CH4.  Global Biogeochemical Cycles: an international journal of global change. 2021
  • Evaluation of a field-deployable Nafion (TM)-based air-drying system for collecting whole air samples and its application to stable isotope measurements of CO2.  Atmospheric Measurement Techniques. 4051-4064. 2020
  • Strong sensitivity of the isotopic composition of methane to the plausible range of tropospheric chlorine.  Atmospheric Chemistry and Physics. 8405-8419. 2020
  • Preindustrial (CH4)-C-14 indicates greater anthropogenic fossil CH4 emissions.  Nature. 409-+. 2020
  • Enhanced North American carbon uptake associated with El Nino.  Science Advances. 2019
  • Very Strong. Atmospheric Methane Growth in the 4 Years 2014-2017: Implications for the paris Agreement.  Global Biogeochemical Cycles: an international journal of global change. 318-342. 2019
  • Limited impact of El Nino-Southern Oscillation on variability and growth rate of atmospheric methane.  Biogeosciences. 6371-6386. 2018
  • Interlaboratory comparison of delta C-13 and delta D measurements of atmospheric CH4 for combined use of data sets from different laboratories.  Atmospheric Measurement Techniques. 1207-1231. 2018
  • Upward revision of global fossil fuel methane emissions based on isotope database (vol 538, pg 88, 2016).  Nature. 452-452. 2017
  • Using delta C-13-CH4 and delta D-CH4 to constrain Arctic methane emissions.  Atmospheric Chemistry and Physics. 14891-14908. 2016
  • Upward revision of global fossil fuel methane emissions based on isotope database.  Nature. 88-91. 2016
  • Rising atmospheric methane: 2007-2014 growth and isotopic shift.  Global Biogeochemical Cycles: an international journal of global change. 1356-1370. 2016
  • A 21st-century shift from fossil-fuel to biogenic methane emissions indicated by (CH4)-C-13.  Science. 80-84. 2016