selected publications

• journal article

  • Atmospheric data support a multi-decadal shift in the global methane budget towards natural tropical emissions.  Atmospheric Chemistry and Physics. 8429-8452. 2023
  • Global Atmospheric δ¹³CH₄ and CH₄ Trends for 2000-2020 from the Atmospheric Transport Model TM5 Using CH₄ from Carbon Tracker Europe-CH₄ Inversions.  Atmosphere. 2023
  • Using ice core measurements from Taylor Glacier, Antarctica, to calibrate in situ cosmogenic C-14 production rates by muons.  The Cryosphere. 843-863. 2023
  • Estimating emissions of methane consistent with atmospneric measurements of methane and delta C-13 of methane.  Atmospheric Chemistry and Physics. 15351-15377. 2022
  • Improved global wetland carbon isotopic signatures support post-2006 microbial methane emission increase.  Communications Earth & Environment. 2022
  • Variational inverse modeling within the Community Inversion Framework v1.1 to assimilate delta C-13(CH4) and CH4: a case study with model LMDz-SACS.  Geoscientific Model Development. 4831-4851. 2022
  • The Role of Emission Sources and Atmospheric Sink in the Seasonal Cycle of CH4 and delta(13)-CH4: Analysis Based on the Atmospheric Chemistry Transport Model TM5.  Atmosphere. 2022
  • Continuous CH4 and delta(CH4)-C-13 measurements in London demonstrate under-reported natural gas leakage.  Atmospheric Chemistry and Physics. 3595-3613. 2022
  • Atmospheric methane and nitrous oxide: challenges alongthe path to Net Zero.  Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences. 2021
  • 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