John B. Miller (

NOAA/Earth System Research Laboratory/Global Monitoring Division, and
Cooperative Institute for Research in Environmental Science (CIRES), University of Colorado
Boulder, CO 80305

Education and Training

1992 B.A., magna cum laude Chemistry and History, Carleton College
1999 PhDChemistry, University of Colorado, Boulder

Research and Professional Experience

2013 - Senior Research Scientist, CIRES, University of Colorado, Boulder
2008 - 2013 Research Scientist III, CIRES, University of Colorado, Boulder
2002 - 2008 Research Scientist II, CIRES, University of Colorado, Boulder
2000 - 2002 National Research Council Post-doctoral Fellow NOAA/CMDL, Boulder, Colorado
1999 - 2000 Research Scientist, Institute of Arctic and Alpine Research, University of Colorado, Boulder
1994 - 1999 Graduate Research and Teaching Assistant, Department of Chemistry and Biochemistry, University of Colorado, Boulder

Peer-reviewed Publications

Citation Statistics: (from Google Scholar as of June 13, 2014) H-index: 30

  1. Bowling, D. R., Ballantyne, A. P., Miller, J. B., Burns, S. P., Conway, T. J., Menzer, O., Stephens, B. B., and Vaughn, B. H.: Ecological processes dominate the 13C land disequilibrium in a Rocky Mountain subalpine forest, Global Biogeochem. Cycles, 28, 2013GB004686, 10.1002/2013GB004686, 2014.
  2. Ciais, P. et al., Current systematic carbon cycle observations, and needs for implementing a policy-relevant carbon observing system, Biogeosciences, In Press, 2014
  3. van der Velde, I. R., Miller, J. B., Schaefer, K., van der Werf, G., Krol, M., and Peters, W.: Terrestrial cycling of 13CO2 by photosynthesis, respiration and biomass burning in SiBCASA, Biogeosciences, In Press, 2014.
  4. Wang, X., Piao, S., Ciais, P., Friedlingstein, P., Myneni, R. B., Cox, P., Heimann, M., Miller, J., Peng, S., Wang, T., Yang, H., and Chen, A.: A two-fold increase of carbon cycle sensitivity to tropical temperature variations, Nature, 506, 212-215, 10.1038/nature12915, 2014.
  5. Gatti, L. V.*, Gloor, M.*, Miller, J. B.*, Doughty, C. E., Malhi, Y., Domingues, L. G., Basso, L. S., Martinewski, A., Correia, C. S. C., Borges, V. F., Freitas, S., Braz, R., Anderson, L. O., Rocha, H., Grace, J., Phillips, O. L., and Lloyd, J. (2014) Drought sensitivity of Amazonian carbon balance revealed by atmospheric measurements, Nature, 506, 76-80, 10.1038/nature12957, 2014. (*authors contributed equally to the manuscript).
  6. LaFranchi, BW, G Petron, JB Miller, SJ Lehman, AE Andrews, EJ Dlugokencky, B Hall, BR Miller, SA Montzka, W Neff, PC Novelli, C Sweeney, JC Turnbull, DE Wolfe, PP Tans, KR Gurney and TP Guilderson (2013), Constraints on emissions of carbon monoxide, methane, and a suite of hydrocarbons in the Colorado Front Range using observations of (CO2)-C-14. Atmos. Chem. Phys.13 (21) 11101-11120, issn: 1680-7316, ids: 253PP, doi: 10.5194/acp-13-11101-2013
  7. Lehman, SJ, JB Miller, C Wolak, J Southon, PP Tans, SA Montzka, C Sweeney, A Andrews, B LaFranchi, TP Guilderson and JC Turnbull (2013), ALLOCATION OF TERRESTRIAL CARBON SOURCES USING (CO2)-C-14: METHODS, MEASUREMENT, AND MODELING. Radiocarbon55 (3-Feb) 1484-1495
  8. Miller, J, S Lehman, C Wolak, J Turnbull, G Dunn, H Graven, R Keeling, HAJ Meijer, AT Aerts-Bijma, SWL Palstra, AM Smith, C Allison, J Southon, XM Xu, T Nakazawa, S Aoki, T Nakamura, T Guilderson, B LaFranchi, H Mukai, Y Terao, M Uchida and M Kondo (2013), INITIAL RESULTS OF AN INTERCOMPARISON OF AMS-BASED ATMOSPHERIC (CO2)-C-14 MEASUREMENTS. Radiocarbon55(3-Feb) 1475-1483,
  9. Miller, SM, SC Wofsy, AM Michalak, EA Kort, AE Andrews, SC Biraud, EJ Dlugokencky, J Eluszkiewicz, ML Fischer, G Janssens-Maenhout, BR Miller, JB Miller, SA Montzka, T Nehrkorn and C Sweeney (2013),Anthropogenic emissions of methane in the United States. Proc. Natl. Acad. Sci. U. S. A.110 (50) 20018-20022, issn: 0027-8424, ids: 266YY, doi: 10.1073/pnas.1314392110,
  10. Moreira, DS, SR Freitas, JP Bonatti, LM Mercado, NME Rosario, KM Longo, JB Miller, M Gloor and LV Gatti (2013), Coupling between the JULES land-surface scheme and the CCATT-BRAMS atmospheric chemistry model (JULES-CCATT-BRAMS1.0): applications to numerical weather forecasting and the CO2 budget in South America. Geosci. Model Dev.6 (4) 1243-1259, issn: 1991-959X, ids: 212KE, doi: 10.5194/gmd-6-1243-2013
  11. Saito, R, PK Patra, C Sweeney, T Machida, M Krol, S Houweling, P Bousquet, A Agusti-Panareda, D Belikov, D Bergmann, HS Bian, P Cameron-Smith, MP Chipperfield, A Fortems-Cheiney, A Fraser, LV Gatti, E Gloor, P Hess, SR Kawa, RM Law, R Locatelli, Z Loh, S Maksyutov, L Meng, JB Miller, PI Palmer, RG Prinn, M Rigby and C Wilson (2013), TransCom model simulations of methane: Comparison of vertical profiles with aircraft measurements. J. Geophys. Res.-Atmos.118 (9) 3891-3904, doi: 10.1002/jgrd.50380,
  12. Turnbull, J, H Graven, J Miller and S Lehman (2013), ATMOSPHERIC RADIOCARBON WORKSHOP REPORT. Radiocarbon55 (3-Feb) 1470-1474
  13. van der Velde, IR, JB Miller, K Schaefer, KA Masarie, S Denning, JWC White, PP Tans, MC Krol and W Peters (2013), Biosphere model simulations of interannual variability in terrestrial C-13/C-12 exchange. Glob. Biogeochem. Cycle27 (3) 637-649, issn: 0886-6236, ids: 232JA, doi: 10.1002/gbc.20048
  14. Miller, J. B., et al. (2012), Linking emissions of fossil fuel CO2 and other anthropogenic trace gases using atmospheric (CO2)-C-14, J. Geophys. Res., 117.
  15. Ballantyne, A. P., C. B. Alden, J. B. Miller, P. P. Tans, and J. W. C. White (2012), Increase in observed net carbon dioxide uptake by land and oceans during the past 50 years, Nature, 488(7409), 70-+.
  16. Levin, I., C. Veidt, B. H. Vaughn, G. Brailsford, T. Bromley, R. Heinz, D. Lowe, J. B. Miller, C. Poss, and J. W. C. White (2012), No inter-hemispheric delta(CH4)-C-13 trend observed, Nature, 486(7404), E3-E4.
  17. Gloor, M., et al. (2012), The carbon balance of South America: a review of the status, decadal trends and main determinants, Biogeosciences, 9(12), 5407-5430.
  18. Andres, R. J., et al. (2012), A synthesis of carbon dioxide emissions from fossil-fuel combustion, Biogeosciences, 9(5), 1845-1871.
  19. Petron, G., et al. (2012), Hydrocarbon emissions characterization in the Colorado Front Range: A pilot study, J. Geophys. Res., 117.
  20. Masarie, K. A., G. Petron, A. Andrews, L. Bruhwiler, T. J. Conway, A. R. Jacobson, J. B. Miller, P. P. Tans, D. E. Worthy, and W. Peters (2011), Impact of CO2 measurement bias on CarbonTracker surface flux estimates, J. Geophys. Res., 116.
  21. Turnbull, J. C., P. P. Tans, S. J. Lehman, D. Baker, T. J. Conway, Y. S. Chung, J. Gregg, J. B. Miller, J. R. Southon, and L. X. Zhou (2011), Atmospheric observations of carbon monoxide and fossil fuel CO(2) emissions from East Asia, J. Geophys. Res., 116.
  22. Turnbull, J. C., et al. (2011), Assessment of fossil fuel carbon dioxide and other anthropogenic trace gas emissions from airborne measurements over Sacramento, California in spring 2009, Atmospheric Chemistry and Physics, 11(2), 705-721.
  23. Ballantyne, A. P., J. B. Miller, I. T. Baker, P. P. Tans, and J. W. C. White (2011), Novel applications of carbon isotopes in atmospheric CO2: what can atmospheric measurements teach us about processes in the biosphere?, Biogeosciences, 8(10), 3093-3106.
  24. Alden, C. B., J. B. Miller*, and J. W. C. White (2010), Can bottom-up ocean CO2 fluxes be reconciled with atmospheric 13C observations?, Tellus, Ser. B, 62(5), 369-388. (*corresponding author).
  25. Ballantyne, A. P., J. B. Miller, and P. P. Tans (2010), Apparent seasonal cycle in isotopic discrimination of carbon in the atmosphere and biosphere due to vapor pressure deficit, Global Biogeochem. Cycles, 24.
  26. Gatti, L. V., J. B. Miller, M. T. S. D'Amelio, A. Martinewski, L. S. Basso, M. E. Gloor, S. Wofsy, and P. Tans (2010), Vertical profiles of CO2 above eastern Amazonia suggest a net carbon flux to the atmosphere and balanced biosphere between 2000 and 2009, Tellus, Ser. B, 62(5), 581-594.
  27. Kort, E. A., et al. (2010), Atmospheric constraints on 2004 emissions of methane and nitrous oxide in North America from atmospheric measurements and a receptor-oriented modeling framework, Journal of Integrative Environmental Sciences, 7, 125-133.
  28. Pendall, E., L. Schwendenmann, T. Rahn, J. B. Miller, P. P. Tans, and J. W. C. (2010) White Land use and season affect fluxes of CO2, CH4, CO, N2O, H-2 and isotopic source signatures in Panama: evidence from nocturnal boundary layer profiles, Global Change Biology, 16(10), 2721-2736.
  29. Peters, W., et al. (2010), Seven years of recent European net terrestrial carbon dioxide exchange constrained by atmospheric observations, Global Change Biology, 16(4), 1317-1337.
  30. Dlugokencky, E. J., Bruhwiler, L., White, J. W. C., Emmons, L. K., Novelli, P. C., Montzka, S. A., Masarie, K. A., Lang, P. M., Crotwell, A. M., Miller, J. B. and Gatti, L. V. 2009. Observational Constraints on Recent Increases in the Atmospheric Ch4 Burden. Geophys. Res. Lett. 36.
  31. Bergamaschi, P., et al. 2009. Inverse Modeling of Global and Regional Ch4 Emissions Using Sciamachy Satellite Retrievals. J. Geophys. Res. 114.
  32. D'amelio, M. T. S., Gatti, L. V., Miller, J. B. and Tans, P. 2009. Regional N2O Fluxes in Amazonia Derived from Aircraft Vertical Profiles. Atmos. Chem. Phys. 9, 8785-8797.
  33. Turnbull, J., Rayner, P., Miller, J., Naegler, T., Ciais, P. and Cozic, A. 2009. On the Use of 14co2 as a Tracer for Fossil Fuel Co2: Quantifying Uncertainties Using an Atmospheric Transport Model. J. Geophys. Res. 114.
  34. Bowling, D. R., Miller, J. B., Rhodes, M. E., Burns, S. P., Monson, R. K. and Baer, D. 2009. Soil, Plant, and Transport Influences on Methane in a Subalpine Forest under High Ultraviolet Irradiance. Biogeosciences 6, 1311-1324.
  35. Wingate, L., Ogee, J., Cuntz, M., Genty, B., Reiter, I., Seibt, U., Yakir, D., Maseyk, K., Pendall, E. G., Barbour, M. M., Mortazavi, B., Burlett, R. G., Peylin, P., Miller, J., Mencuccini, M., Shim, J. H., Hunt, J. and Grace, J. 2009. The Impact of Soil Microorganisms on the Global Budget of ∂18O in Atmospheric CO2. PNAS 106, 22411-22415.
  36. Schaeffer, S. M., J. B. Miller, B. H. Vaughn, J. W. C. White, and D. R. Bowling (2008), Long-term field performance of a tunable diode laser absorption spectrometer for analysis of carbon isotopes of CO2 in forest air, Atmos. Chem. Phys., 8(17), 5263-5277.
  37. Kort, E. A., J. Eluszkiewicz, B. B. Stephens, J. B. Miller, C. Gerbig, T. Nehrkorn, B. C. Daube, J. Kaplan, S. Houweling, and S. C. Wofsy (2008), Emissions of CH4 and N2O over the United States and Canada based on a receptor-oriented modeling framework and COBRA-NA atmospheric observations, Geophys. Res. Lett., 35(L18808), doi:10.1029/2008GL034031.
  38. Meirink, J. F., P. Bergamaschi, C. Frankenberg, M. T. S. D'Amelio, E. Dlugokencky, L. Gatti, S. Houweling, J. B. Miller, T. Rockmann, M. G. Villani, and M. Krol (2008), Four-dimensional Variational Data Assimilation for Inverse Modelling of Atmospheric Methane Emissions: Analysis of SCIAMACHY Observations Journal Geophsy. Res., 113 (D17301), doi:10.1029/2007JD009740.
  39. Cuna, S., E. Pendall, J. B. Miller, P. P. Tans, E. Dlugokencky, and J. W. C. White (2008), Separating contributions from natural and anthropogenic sources in atmospheric methane from the Black Sea region, Romania, Applied Geochemistry, 23(10), 2871-2879.
  40. Turnbull, J. C., J. B. Miller, S. J. Lehman, D. Hurst, P. P. Tans, J. Southon, S. Montzka, J. Elkins, D. J. Mondeel, P. A. Romashkin, N. Elansky, and A. Skorokhod (2008), Spatial distribution of Δ14CO2 across Eurasia: measurements from the TROICA-8 expedition, Atmos. Chem. Phys. Discuss., 8(4), 15207-15238.
  41. Peters, W., A.R. Jacobson, C. Sweeney, A.E. Andrews, T.J. Conway, K.A. Masarie, J.B. Miller, L. Bruhwiler, G. Petron, A. Hirsch, D.E. Worthy, G.R. van der Werf, J. Randerson, P.O. Wennberg, M. Krol, and P. Tans, An atmospheric perspective on North American carbon dioxide exchange: CarbonTracker, PNAS, 104 (48), 2007.
  42. Turnbull, J. C., S. J. Lehman, J. B. Miller, R. J. Sparks, J. R. Southon, and P. P. Tans (2007), A new high precision 14CO2 time series for North American continental air, J. Geophys. Res., 112, D11310, doi:10.1029/2006JD008184.
  43. Miller, J.B., L.V. Gatti, M.T.S. D'Amelio, A. Crotwell, E. Dlugokencky, P.S. Bakwin, P. Artaxo, and P. Tans, Airborne sampling reveals large methane enhancement over the Amazon basin, Geophys. Res. Lett., 34 (L10809, doi:10.1029/2006GL029213.), 2007.
  44. Ferretti, D.F., J.B. Miller, J.W.C. White, K.R. Lassey, D.C. Lowe, and D.M. Etheridge, Stable isotopes provide revised global limits of aerobic methane emissions from plants, Atmospheric Chemistry and Physics, 7, 237-241, 2007.
  45. White, J., D.F. Ferretti, J.B. Miller, D.M. Etheridge, K.R. Lassey, D.C. Lowe, C.M. MacFarling, M.F. Dreier, C.M. Trudinger, and T.D. van Ommen, The Global Methane Budget over the last 2000 years: 13CH4 reveals hidden information, in Stable Isotopes as Indicators of Ecological Change, edited by T.E. Dawson, and R.T.W. Siegwolf, Academic Press, San Diego, 2007.
  46. Bousquet, P., P. Ciais, J.B. Miller, E.J. Dlugokencky, D.A. Hauglustaine, C. Prigent, G.R. Van der Werf, P. Peylin, E.G. Brunke, C. Carouge, R.L. Langenfelds, J. Lathiere, F. Papa, M. Ramonet, M. Schmidt, L.P. Steele, S.C. Tyler, and J. White, Contribution of anthropogenic and natural sources to atmospheric methane variability, Nature, 443 (7110), 439-443, 2006.
  47. Turnbull, J.C., J.B. Miller, S.J. Lehman, P.P. Tans, R.J. Sparks, and J. Southon, Comparison of 14CO2, CO, and SF6 as tracers for recently added fossil fuel CO2 in the atmosphere and implications for biological CO2 exchange, Geophys. Res. Lett., 33 (1), 2006.
  48. Ferretti, D.F., J.B. Miller, J.W.C. White, D.M. Etheridge, K.R. Lassey, D.C. Lowe, C.M.M. Meure, M.F. Dreier, C.M. Trudinger, T.D. van Ommen, and R.L. Langenfelds, Unexpected changes to the global methane budget over the past 2000 years, Science, 309 (5741), 1714-1717, 2005
  49. Peters, W., Miller, J. B., Whitaker, J., Denning, A. S., Hirsch, A., Krol, M. C., et al., An ensemble data assimilation system to estimate CO2 surface fluxes from atmospheric trace gas observations. J. Geoph. Res., 110(D24304), doi:10.1029/2005JD006157, 2005.
  50. Miller, J. B.: The carbon isotopic composition of atmospheric methane and its constraint on the global methane budget.. Stable Isotopes and Biosphere-Atmosphere Interactions, L. B. Flanagan, J. R. Ehleringer and D. E. Pataki, Elsevier-Academic Press, 2005
  51. Randerson, J.T., G.R. van der Werf, G.J. Collatz, L. Giglio, C.J. Still, P. Kasibhatla, J.B. Miller, J.W.C. White, R.S. DeFries, and E.S. Kasischke, Fire emissions from C-3 and C-4 vegetation and their influence on interannual variability of atmospheric CO2 and δ13C, Global Biogeochem. Cycles, 19 (2), -, 2005.
  52. Suits, N.S., A.S. Denning, J.A. Berry, C.J. Still, J. Kaduk, J.B. Miller, and I.T. Baker, Simulation of carbon isotope discrimination of the terrestrial biosphere, Global Biogeochem. Cycles, 19 (1), 2005.
  53. Vaughn, B.H., J.B. Miller, D.F. Ferretti, and J.W.C. White: Stable isotope measurements of atmospheric co2 and ch4. In: Stable isotope measurements of atmospheric co2 and ch4, Stable isotope measurements of atmospheric co2 and ch4 (P. de Groot, ed), Elsevier Science, 2004
  54. Peters, W., M.C. Krol, E.J. Dlugokencky, F.J. Dentener, P. Bergamaschi, G. Dutton, P. von Velthoven, J.B. Miller, L. Bruhwiler, and P.P. Tans: Toward regional-scale modeling using the two-way nested global model tm5: Characterization of transport using sf6. J. Geophys. Res. - Atmos: Vol. 109, doi:10.1029/2004JD005020, 2004
  55. Fletcher, S.E.M., P.P. Tans, L.M. Bruhwiler, J.B. Miller, and M. Heimann: Ch4 sources estimated from atmospheric observations of ch4 and its c-13/c-12 isotopic ratios: 1. Inverse modeling of source processes. Global Biogeochem. Cyc.: Vol. 18, doi:10.1029/2004GB002223, 2004
  56. Fletcher, S.E.M., P.P. Tans, L.M. Bruhwiler, J.B. Miller, and M. Heimann: Ch4 sources estimated from atmospheric observations of ch4 and its c-13/c-12 isotopic ratios: 2. Inverse modeling of ch4 fluxes from geographical regions. Global Biogeochem. Cyc.: Vol. 18, doi:10.1029/2004GB002224, 2004
  57. Helliker, B.R., J.A. Berry, A.K. Betts, P.S. Bakwin, K.J. Davis, A.S. Denning, J.R. Ehleringer, J.B. Miller, M.P. Butler, and D.M. Ricciuto, Estimates of net CO2 flux by application of equilibrium boundary layer concepts to CO2 and water vapor measurements from a tall tower, J. Geophys. Res., 109 (D20), 2004.
  58. Miller, J.B., and P.P. Tans. Calculating isotopic discrimination from atmospheric measurements at various scales, Tellus, 55B. , 2003
  59. Miller, J. B., Tans, P. P., White, J. W. C., Conway, T. J. and Vaughn, B. W.. The atmospheric signal of terrestrial isotopic discrimination and its implication for carbon fluxes. Tellus, 55B, 2003
  60. Dlugokencky, E.J., S. Houweling, L. Bruhwiler, K.A. Masarie, P.M. Lang, J.B. Miller, and P.P. Tans: Atmospheric methane levels off: Temporary pause or a new steady-state?. Geophys. Res. Lett.: Vol. 30, 10.1029/20 , 2003
  61. Miller, JB KA Mack, R Dissly, JWC White, EJ Dlugokencky, PP Tans, Development of analytical methods and measurements of 13C/12C in atmospheric CH4 from the NOAA Climate Monitoring and Diagnostics Laboratory Global Air Sampling Network, J. Geophys. Res., Vol. 107(D13), doi:10.1029/2001JD000630, 2002
  62. Miller, J.B., D. Yakir, J.W. White, and P.P. Tans, Measurement of 18O in the soil-atmosphere CO2 flux, Global Biogeochem. Cycles, 13 (3), 761-774, 1999.

Other Publications

  1. Miller, J. B. Souces, Sinks and Seasons. Nature 451, 53-54, 2008
  2. Miller, J. B. (ed.) 13th WMO/IAEA Meeting of Experts on Carbon Dioxide Concentration and Related Tracers Measurement Techniques, 217 pp, World Meteorological Organization, Geneva, 2007.
  3. Miller, J. B., “Book Review: ‘The Global Carbon Cycle: Integrating Humans, Climate, and the Natural World’.” Bull. Amer. Meteorol. Soc.: Vol. 87 (4), 2005
  4. Thesis: “Application of gas chromatography–isotope ratio mass spectrometry (GC-IRMS) to global budgets of 13CH4 and C18OO”, University of Colorado, Boulder, Dept. of Chemistry


Students and Post-docs supervised

  1. Jocelyn Turnbull, Dept. of Geological Sciences, Ph.D. 2003-2006 (Thesis committee)
  2. Kenneth MacClune, Dept of Geological Sciences, M.S. 2004-2007 (Thesis committee)
  3. Dr. Ashley Ballantyne, NRC Post-doctoral Fellow at NOAA , 2006-2007 (with Pieter Tans)
  4. Michael Rhodes, Hollings Fellowship summer student at NOAA, 2007; Michael won first prize for best poster among all NOAA Hollings students at the 2007 Hollings symposium
  5. Joseph Timkovsky, Hollings Fellowship summer student at NOAA, 2008.
  6. Monica d’Amelio, Insituto de Pesquisas Nucleares e Energeticas (Brazil), Ph. D. 2006-2010 (Thesis committee)
  7. Caroline Alden, Dept. of Geological Scineces, Ph.D., 2008 - present (Thesis committee).
  8. Ivar van der Velde, Dept. of Atmospheric Sciences, Waginengen University (Netherlands) Ph. D. 2009 – presente (Thesis committee).
  9. Colin Lindsay, Dept. of Geological Sciences, Ph. D. 2010 – present (Thesis committee).

Synergistic and Service Activities

Fellowships and Awards

Invited Lectures

  1. Modeling of CO2, 13C and 14C: going beyond net fluxes.GeoCarbon 2013 Meeting, Geneva, Switzerland, October, 2013
  2. Progress in interpretation and modeling of atmospheric d13CO2. Stable Isotopes in Biosphere Atmosphere Earth-system Research (SIBAE) Meeting, Wroclaw, Poland, May 2013
  3. Progress in interpretation and modeling of atmospheric δ13CO2, Stable Isotopes in Biospheric-Atmospheric-Earth System Research Workshop, Innsbruck, Austria, November 2012
  4. Using atmospheric carbon to monitor forest carbon uptake and deforestation in Amazonia.. AGU Conference of the Americas, Foz do Iguacu, Brazil, August, 2010
  5. Progress in and the future of global modeling of atmospheric δ13C. Stable Isotopes in Biospheric-Atmospheric-Earth System Research, Ascona, Switzerland, March 2010
  6. Group on Earth Observations (GEO) Carbon Community of Practice meeting, “NOAA Earth System Research Laboratory Carbon Measurements and Modeling”, November, 2009
  7. NOAA/ESRL Chemical Sciences Division Seminar, “Bridging Carbon Cycle and Air Quality Studies using atmospheric 14CO2”, October, 2008
  8. AGU 2008 Fall Meeting, “A new role for atmospheric 13CO2 in global models”, San Francisco, December, 2008
  9. AGU 2007 Fall Meeting, “Airborne measurements indicate large methane fluxes from eastern Amazônia”, San Francisco, December 2007
  10. Workshop on “Partitioning of fluxes between the biosphere and atmosphere across spatial scales”, “What is necessary to interpret background δ13CO2 data?,” Interlaken, Switzerland, April 2004
  11. Workshop on “Stable isotopic signals of the terrestrial biosphere: Linking ecosystem C fluxes to isotopic signals of plant components”, “Moving beyond fluxes: What else does atmospheric 13CO2 tell us about the oceans and biosphere?”, Orvieto, Italy, November 2003
  12. University of Colorado, Institute of Arctic and Alpine Research Seminar Series, “What can atmospheric 13CO2 tell us about the oceans and biosphere?”, Boulder, Colorado, October 2003
  13. >California Institute of Technology, Geological and Planetary Sciences Seminar Series,Is the Global Oceanic Carbon Sink Shrinking?”, Pasadena, California, March 2003
  14. NCAR Carbon Data Assimilation Workshop, “Can δ13C Improve our Ability to Determine CO2 Fluxes?”, Boulder, Colorado, July 2002
  15. NOAA/CMDL Seminar, “Using 13CO2 as a tracer for terrestrial carbon fluxes”, Boulder, July 2002
  16. Biosphere-Atmosphere Stable Isotope Network (BASIN) Workshop, “δ13C of Methane and its Constraint on the Global Budget of Methane”, Banff, Canada, May 2002