Dr. Bryan Neal Duncan

Dr. Bryan Neal Duncan

  • RSCH AST,ATMOSPHERIC CHEMISTRY & DYN
  • Additional Roles: Deputy Project Scientist for Aura
  • 301.614.5994
  • NASA/GSFC
  • Mail Code: 614
  • Greenbelt , MD 20771
  • Employer: NASA
  • Brief Bio

    Dr. Bryan N. Duncan is an atmospheric scientist in the Atmospheric Chemistry and Dynamics Laboratory at NASA Goddard Space Flight Center.  He is a deputy project scientist for the NASA Aura satellite mission.  He has expertise in air quality, tropospheric trace gas composition, and carbon modeling.

    Research Interests

    Bryan's General Research Interests

    • The long-range transport, including cross-tropopause transport, of anthropogenic and biomass burning pollution.
    • Air quality as observed from space-borne instruments.
    • Effects of climate change on future atmospheric composition.
    • Observational and modeled trends in tropospheric composition.
    • Effects of climate change on atmospheric dynamics.
    • Past, present, and future biomass burning trends.
    • Impact of methane emissions on atmospheric composition and climate.
    • Application of satellite data for estimates of tropospheric composition and emissions.
    • Interpretation of satellite data with chemical transport models.
    • Impact of stratospheric intrusions on tropospheric chemistry.
    • Earth System Modeling.

    Positions/Employment

    1/2009 - Present

    Research Physical Scientist

    NASA, Greenbelt, MD
    1/2004 - 12/2008

    Assistant, Associate, to Senior Research Scientist

    University of Maryland Baltimore County, Maryland
    10/2001 - 10/2003

    Research Associate

    Swiss Institute of Technology, Lausanne, Switzerland
    10/1997 - 10/2001

    Postdoctoral Fellow to Research Associate

    Harvard University, Cambridge, MA

    Education

    Georgia Institute of Technology, Atlanta, GA

    Ph.D. Earth and Atmospheric Sciences (1997)
    Thesis The Effects of Urban Ozone Control Strategies on Northern Hemispheric, Midlatitude Tropospheric Ozone
    Advisor William Chameides
    Minor Environmental Public Policy

    M.S. Earth and Atmospheric Sciences (1993)

    B.S. Chemistry (1991)

    Professional Service

    •Co-editor for the scientific journal, Atmospheric Chemistry and Physics (ACP) (2008-present).
    •Co-chair of the international IGAC/SPARC Chemistry Climate Modeling Initiative (CCMI).
    •Convened special sessions and workshops at scientific meetings (e.g., several at AGU).
     

    Publications

    Refereed

    Elshorbany, Y., B. Duncan, S. Strode, J. Wang, and J. Kouatchou. 2016. "The description and validation of the computationally Efficient CH4–CO–OH (ECCOHv1.01) chemistry module for 3-D model applications ." Geoscientific Model Development, 9: 799-822 [doi:10.5194/gmd-9-799-2016]

    Krotkov, N. A., C. A. McLinden, C. Li, et al. L. N. Lamsal, E. A. Celarier, S. V. Marchenko, W. H. Swartz, E. J. Bucsela, J. Joiner, B. N. Duncan, K. F. Boersma, J. P. Veefkind, P. F. Levelt, V. E. Fioletov, R. R. Dickerson, H. He, Z. Lu, and D. G. Streets. 2016. "Aura OMI observations of regional SO2 and NO2 pollution changes from 2005 to 2015." Atmos. Chem. Phys., 16 (7): 4605-4629 [10.5194/acp-16-4605-2016]

    Ott, L. E., B. N. Duncan, A. M. Thompson, et al. G. Diskin, Z. Fasnacht, A. O. Langford, M. Lin, A. M. Molod, J. E. Nielsen, S. E. Pusede, K. Wargan, A. J. Weinheimer, and Y. Yoshida. 2016. "requency and impact of summertime stratospheric intrusions over Maryland during DISCOVER-AQ (2011): New evidence from NASA's GEOS-5 simulations." J. Geophys. Res. Atmos., [10.1002/2015jd024052]

    Nicely, J. M., D. C. Anderson, T. P. Canty, et al. R. J. Salawitch, G. M. Wolfe, E. C. Apel, S. R. Arnold, E. L. Atlas, N. J. Blake, J. F. Bresch, T. L. Campos, R. R. Dickerson, B. Duncan, L. K. Emmons, M. J. Evans, R. P. Fernandez, J. Flemming, S. R. Hall, T. F. Hanisco, S. B. Honomichl, R. S. Hornbrook, V. Huijnen, L. Kaser, D. E. Kinnison, J.-F. Lamarque, J. Mao, S. A. Monks, D. D. Montzka, L. L. Pan, D. D. Riemer, A. Saiz-Lopez, S. D. Steenrod, M. H. Stell, S. Tilmes, S. Turquety, K. Ullmann, and A. J. Weinheimer. 2016. "An observationally constrained evaluation of the oxidative capacity in the tropical western Pacific troposphere." J. Geophys. Res. Atmos., (In Press) [10.1002/2016jd025067]

    Strode, S. A., H. M. Worden, M. Damon, et al. A. R. Douglass, B. N. Duncan, L. K. Emmons, J.-F. Lamarque, M. Manyin, L. D. Oman, J. M. Rodriguez, S. E. Strahan, and S. Tilmes. 2016. "Interpreting space-based trends in carbon monoxide with multiple models." Atmos. Chem. Phys., 16 (11): 7285-7294 [10.5194/acp-16-7285-2016]

    Duncan, B. N., L. N. Lamsal, A. M. Thompson, et al. Y. Yoshida, Z. Lu, D. G. Streets, M. M. Hurwitz, and K. E. Pickering. 2015. " A space-based, high-resolution view of notable changes in urban NO x pollution around the world (2005-2014) ." J. Geophys. Res. Atmos., [10.1002/2015jd024121]

    Ziemke, J. R., A. R. Douglass, L. D. Oman, S. E. Strahan, and B. N. Duncan. 2015. "Tropospheric ozone variability in the tropics from ENSO to MJO and shorter timescales." Atmos. Chem. Phys., 15 (14): 8037-8049 [10.5194/acp-15-8037-2015]

    Monks, S. A., S. R. Arnold, L. K. Emmons, et al. K. S. Law, S. Turquety, B. N. Duncan, J. Flemming, V. Huijnen, S. Tilmes, J. Langner, J. Mao, Y. Long, J. L. Thomas, S. D. Steenrod, J. C. Raut, C. Wilson, M. P. Chipperfield, G. S. Diskin, A. Weinheimer, H. Schlager, and G. Ancellet. 2015. "Multi-model study of chemical and physical controls on transport of anthropogenic and biomass burning pollution to the Arctic." Atmos. Chem. Phys., 15 (6): 3575-3603 [10.5194/acp-15-3575-2015]

    Arnold, S. R., L. K. Emmons, S. A. Monks, et al. K. S. Law, D. A. Ridley, S. Turquety, S. Tilmes, J. L. Thomas, I. Bouarar, J. Flemming, V. Huijnen, J. Mao, B. N. Duncan, S. Steenrod, Y. Yoshida, J. Langner, and Y. Long. 2015. "Biomass burning influence on high-latitude tropospheric ozone and reactive nitrogen in summer 2008: a multi-model analysis based on POLMIP simulations." Atmos. Chem. Phys., 15 (11): 6047-6068 [10.5194/acp-15-6047-2015]

    Lamsal, L. N., B. N. Duncan, Y. Yoshida, et al. N. A. Krotkov, K. E. Pickering, D. G. Streets, and Z. Lu. 2015. "U.S. NO2 trends (2005–2013): EPA Air Quality System (AQS) data versus improved observations from the Ozone Monitoring Instrument (OMI)." Atmos. Env., 110: 130-143 [10.1016/j.atmosenv.2015.03.055]

    Emmons, L. K., S. R. Arnold, S. A. Monks, et al. V. Huijnen, S. Tilmes, K. S. Law, J. L. Thomas, J.-C. Raut, I. Bouarar, S. Turquety, Y. Long, B. N. Duncan, S. D. Steenrod, S. A. Strode, J. Flemming, J. Mao, J. Langner, A. M. Thompson, D. Tarasick, E. C. Apel, D. R. Blake, R. C. Cohen, J. Dibb, G. S. Diskin, A. Fried, S. R. Hall, L. G. Huey, A. J. Weinheimer, A. Wisthaler, T. Mikoviny, J. Nowak, J. Pieschl, J. M. Roberts, T. Ryerson, C. Warneke, and D. Helmig. 2015. "The POLARCAT Model Intercomparison Project (POLMIP): overview and evaluation with observations ." Atmos. Chem. Phys., 15: 6721-6744 [10.5194/acp-15-6721-2015]

    de Foy, B., Z. Lu, D. G. Streets, L. N. Lamsal, and B. N. Duncan. 2015. "Estimates of power plant NOx emissions and lifetimes from OMI NO2 satellite retrievals." Atmospheric Environment, 116: 1-11 [10.1016/j.atmosenv.2015.05.056]

    Lu, Z., D. G. Streets, B. de Foy, et al. L. N. Lamsal, B. N. Duncan, and J. Xing. 2015. "Emissions of nitrogen oxides from US urban areas: estimation from Ozone Monitoring Instrument retrievals for 2005–2014 ." Atmos. Chem. Phys., 15: 10367-10383 [10.5194/acp-15-10367-2015]

    Cook, M. B., K. E. Pickering, J. H. Crawford, et al. B. N. Duncan, C. P. Loughner, G. S. Diskin, A. Fried, and A. J. Weinheimer. 2015. "Spatial and temporal variability of trace gas columns derived from WRF/Chem regional model output: Planning for geostationary observations of atmospheric composition." Atmospheric Environment, 118: 28–44 [10.1016/j.atmosenv.2015.07.024]

    Strode, S. A., B. N. Duncan, E. A. Yegorova, et al. J. Kouatchou, J. R. Ziemke, and A. R. Douglass. 2015. "Implications of carbon monoxide bias for methane lifetime and atmospheric composition in chemistry climate models." Atmospheric Chemistry and Physics, 15: 11789–11805 [10.5194/acp-15-11789-2015]

    Choi, S., J. Joiner, Y. Choi, et al. B. N. Duncan, A. Vasilkov, N. Krotkov, and E. Bucsela. 2014. "First estimates of global free-tropospheric NO2 abundances derived using a cloud-slicing technique applied to satellite observations from the Aura Ozone Monitoring Instrument (OMI)." Atmos. Chem. Phys., 14 (19): 10565-10588 [10.5194/acp-14-10565-2014]

    Ziemke, J. R., M. A. Olsen, J. C. Witte, et al. A. R. Douglass, S. E. Strahan, K. Wargan, X. Liu, M. Schoeberl, K. Yang, T. Kaplan, S. Pawson, B. N. Duncan, P. Newman, P. K. Bhartia, and M. K. Heney. 2014. "Assessment and applications of NASA ozone data products derived from Aura OMI/MLS satellite measurements in context of the GMI chemical transport model." J. Geophys. Res. Atmos., 119 (9): 5671-5699 [10.1002/2013JD020914]

    Duncan, B. N., A. I. Prados, L. Lamsal, et al. Y. Liu, D. Streets, P. Gupta, E. Hilsenrath, R. A. Kahn, J. E. Nielsen, A. Beyersdorf, S. Burton, A. Fiore, J. Fishman, D. Henze, C. Hostetler, N. A. Krotkov, P. Lee, M. Lin, S. Pawson, G. Pfister, K. E. Pickering, R. B. Pierce, Y. Yoshida, and L. Ziemba. 2014. "Satellite data of atmospheric pollution for U.S. air quality applications: Examples of applications, summary of data end-user resources, answers to FAQs, and common mistakes to avoid." Atmospheric Environment, 94: 647-662 [10.1016/j.atmosenv.2014.05.061]

    Streets, D., B. de Foy, B. N. Duncan, et al. L. N. Lamsal, C. Li, and Z. Lu. 2014. "Using Satellite Observations to Measure." Environmental Manager, 64: 16-21.

    Warner, J. X., R. Yang, Z. Wei, et al. F. Carminati, A. Tangborn, Z. Sun, W. Lahoz, J.-L. Attié, L. El Amraoui, and B. N. Duncan. 2014. "Global carbon monoxide products from combined AIRS, TES and MLS measurements on A-train satellites." Atmos. Chem. Phys., 14 (1): 103-114 [10.5194/acp-14-103-2014]

    Zhu, L., D. J. Jacob, L. J. Mickley, et al. E. A. Marais, D. S. Cohan, Y. Yoshida, B. N. Duncan, G. González Abad, and K. V. Chance. 2014. "Anthropogenic emissions of highly reactive volatile organic compounds in eastern Texas inferred from oversampling of satellite (OMI) measurements of HCHO columns." Environmental Research Letters, 9 (11): 114004 [10.1088/1748-9326/9/11/114004]

    de Foy, B., J. L. Wilkins, Z. Lu, D. G. Streets, and B. N. Duncan. 2014. "Model evaluation of methods for estimating surface emissions and chemical lifetimes from satellite data." Atmospheric Environment, 98: 66–77 [10.1016/j.atmosenv.2014.08.051]

    Streets, D. G., T. Canty, G. R. Carmichael, et al. B. de Foy, R. R. Dickerson, B. N. Duncan, D. P. Edwards, J. A. Haynes, D. K. Henze, M. R. Houyoux, D. J. Jacobi, N. A. Krotkov, L. N. Lamsal, Y. Liu, Z. Lu, R. V. Martini, G. G. Pfister, R. W. Pinder, R. J. Salawitch, and K. J. Wechti. 2013. "Emissions estimation from satellite retrievals: A review of current capability." Atmospheric Environment, 77: 1011-1042 [10.1016/j.atmosenv.2013.05.051]

    Duncan, B. N., Y. Yoshida, B. de Foy, et al. L. N. Lamsal, D. G. Streets, Z. Lu, K. E. Pickering, and N. A. Krotkov. 2013. "The observed response of Ozone Monitoring Instrument (OMI) NO2 columns to NOx emission controls on power plants in the United States: 2005–2011." Atmospheric Environment, 81: 102-111 [10.1016/j.atmosenv.2013.08.068]

    Wild, O., A. M. Fiore, D. T. Shindell, et al. R. M. Doherty, W. J. Collins, F. J. Dentener, M. G. Schultz, S. Gong, I. A. MacKenzie, G. Zeng, P. Hess, B. N. Duncan, D. J. Bergmann, S. Szopa, J. E. Jonson, T. J. Keating, and A. Zuber. 2012. "Modelling future changes in surface ozone: a parameterized approach." Atmos. Chem. Phys., 12 (4): 2037-2054 [10.5194/acp-12-2037-2012]

    Fry, M. M., V. Naik, J. J. West, et al. M. D. Schwarzkopf, A. M. Fiore, W. J. Collins, F. J. Dentener, D. T. Shindell, C. Atherton, D. Bergmann, B. N. Duncan, P. Hess, I. A. MacKenzie, E. Marmer, M. G. Schultz, S. Szopa, O. Wild, and G. Zeng. 2012. "The influence of ozone precursor emissions from four world regions on tropospheric composition and radiative climate forcing." J. Geophys. Res., 117 (D7): D07306 [10.1029/2011JD017134]

    Witte, J. C., A. R. Douglass, A. da Silva, et al. O. Torres, R. Levy, and B. N. Duncan. 2011. "NASA A-Train and Terra observations of the 2010 Russian wildfires." Atmos. Chem. Phys., 11 (17): 9287-9301 [10.5194/acp-11-9287-2011]

    Liang, Q., J. M. Rodriguez, A. R. Douglass, et al. J. Crawford, E. Apel, H. Bian, D. Blake, W. Brune, M. Chin, P. R. Colarco, A. Silva, G. Diskin, B. N. Duncan, L. Huey, D. Knapp, D. Montzka, J. Nielsen, J. Olson, S. Pawson, D. Riemer, A. Weinheimer, and A. Wisthaler. 2011. "Reactive nitrogen, ozone and ozone production in the Arctic troposphere and the impact of stratosphere-troposphere exchange." Atmos. Chem. Phys., 11 (24): 13181-13199 [10.5194/acp-11-13181-2011]

    Witte, J. C., B. N. Duncan, A. R. Douglass, et al. T. Kurosu, K. Chance, and C. Retscher. 2011. "The unique OMI HCHO/NO2 feature during the 2008 Beijing Olympics: Implications for ozone production sensitivity." Atmospheric Environment, 45 (18): 3103-3111 [10.1016/j.atmosenv.2011.03.015]

    Duncan, B. N., Y. Yoshida, J. Olson, et al. D. Lee, C. Retscher, R. Martin, L. Lamsal, Y. Hu, K. E. Pickering, D. Allen, and C. Crawford. 2010. "Application of OMI observations to a space-based indicator of NOx and VOC controls on surface ozone formation." Atmos Environ, 44 (18): 2213-2223 [10.1016/j.atmosenv.2010.03.010]

    Allen, D. J., K. E. Pickering, B. N. Duncan, and M. R. Damon. 2010. "Impact of lightning NO emissions on North American photochemistry as determined using the Global Modeling Initiative (GMI) model." J Geophys Res, 115 (D22): D22301 [10.1029/2010JD014062]

    Ott, L., B. N. Duncan, S. Pawson, et al. P. Colarco, M. Chin, C. A. Randles, T. Diehl, and E. Nielsen. 2010. "Influence of the 2006 Indonesian biomass burning aerosols on tropical dynamics studied with the GEOS-5 AGCM." J Geophys Res, 115 (D14): D14121 [10.1029/2009JD013181]

    Yoshida, Y., B. N. Duncan, C. Retscher, et al. K. E. Pickering, E. A. Celarier, J. Joiner, F. Boersma, and P. Veefkind. 2010. "The impact of the 2005 Gulf hurricanes on pollution emissions as inferred from Ozone Monitoring Instrument (OMI) nitrogen dioxide." Atmos Environ, 44 (11): 1443-1448 [10.1016/j.atmosenv.2010.01.037]

    Fiore, A., F. J. Dentener, O. Wild, et al. C. Cuvelier, M. G. Schultz, P. Hess, C. Textor, M. Schulz, R. M. Doherty, L. W. Horowitz, I. A. MacKenzie, M. G. Sanderson, D. T. Shindell, D. S. Stevenson, S. Szopa, R. Van Dingenen, G. Zeng, C. Atherton, D. Bergmann, I. Bey, G. Carmichael, W. J. Collins, B. N. Duncan, G. Faluvegi, G. Folberth, M. Gauss, S. Gong, D. Hauglustaine, T. Holloway, I. S. Isaksen, D. J. Jacob, J. E. Jonson, J. W. Kaminski, T. J. Keating, A. Lupu, E. Marmer, V. Montanaro, R. J. Park, G. Pitari, K. J. Pringle, J. A. Pyle, S. Schroeder, M. G. Vivanco, P. Wind, G. Wojcik, S. Wu, and A. Zuber. 2009. "Multimodel estimates of intercontinental source-receptor relationships for ozone pollution." J. Geophys. Res., 114 (D4): D04301 [10.1029/2008JD010816]

    Anenberg, S. C., J. J. West, A. M. Fiore, et al. D. A. Jaffe, M. J. Prather, D. Bergmann, K. Cuvelier, F. J. Dentener, B. N. Duncan, M. Gauss, P. Hess, J. E. Jonson, A. Lupu, I. A. MacKenzie, E. Marmer, R. J. Park, M. G. Sanderson, M. Schultz, D. T. Shindell, S. Szopa, G. Vivanco, G. Vivanco, and G. Vivanco. 2009. "Intercontinental impacts of ozone pollution on human mortality." Environ Sci Technol, 43 (17): 6482-6487 [10.1021/es900518z]

    Chandra, S., J. Ziemke, B. Duncan, et al. T. Diehl, N. Livesey, and L. Froidevaux. 2009. "Effects of the 2006 El Niño on tropospheric ozone and carbon monoxide: implications for dynamics and biomass burning." Atmos. Chem. Phys., 9 (13): 4239-4249 [10.5194/acp-9-4239-2009]

    Reidmiller, D., A. Fiore, D. Jaffe, et al. D. Bergmann, C. Cuvelier, E. Dentener, B. N. Duncan, M. Gauss, S. Gong, P. Hess, J. Jonson, A. Lupu, E. Marmer, R. Park, M. Schultz, D. T. Shindell, S. Szopa, M. Vivanco, O. Wild, A. Zuber, G. Folberth, and T. Keating. 2009. "The influence of foreign vs. North American emissions on surface ozone in the U.S." Atmos Chem Phys, 9 (14): 5027-5042 [10.5194/acp-9-5027-2009]

    Langmann, B., B. N. Duncan, C. Textor, J. Trentmann, and G. van der Werf. 2009. "Vegetation fire emissions and their impact on air pollution and climate." Atmospheric Environment, 43 (1): 107-116 [10.1016/j.atmosenv.2008.09.047]

    Liang, Q., A. R. Douglass, B. N. Duncan, R. S. Stolarski, and J. C. Witte. 2009. "The governing processes and timescales of stratosphere-to-troposphere transport and its contribution to ozone in the Arctic troposphere." Atmos. Chem. Phys., 9 (9): 3011-3025 [10.5194/acp-9-3011-2009]

    Ziemke, J. R., S. Chandra, B. N. Duncan, et al. M. R. Schoeberl, M. R. Damon, O. Torres, and P. K. Bhartia. 2009. "Recent biomass burning in the tropics and related changes in tropospheric ozone." Geophysical Research Letters, 36 (15): L15819 [10.1029/2009GL039303]

    Liu, H., J. H. Crawford, D. B. Considine, et al. S. E. Platnick, P. M. Norris, B. N. Duncan, R. B. Pierce, G. Chen, and R. M. Yantosca. 2009. "Sensitivity of photolysis frequencies and key tropospheric oxidants in a global model to cloud vertical distributions and optical properties." J. Geophys. Res., 114 (D10): D10305 [10.1029/2008JD011503]

    Duncan, B., Y. Yoshida, M. Damon, A. Douglass, and J. Witte. 2009. "Temperature dependence of factors controlling isoprene emissions." Geophysical Research Letters, 36 (5): L05813 [10.1029/2008GL037090]

    Wu, S., B. Duncan, D. Jacob, A. Fiore, and O. Wild. 2009. "Chemical nonlinearities in relating intercontinental ozone pollution to anthropogenic emissions." Geophysical Research Letters, 36 (5): L05806 [10.1029/2008GL036607]

    Shindell, D. T., M. Chin, F. Dentener, et al. R. M. Doherty, G. S. Faluvegi, A. M. Fiore, P. Hess, D. M. Koch, I. A. MacKenzie, M. G. Sanderson, M. G. Schultz, M. Schulz, D. S. Stevenson, H. Teich, C. Textor, O. Wild, D. J. Bergmann, I. Bey, H. Bian, C. Cuvelier, B. N. Duncan, G. Folberth, L. W. Horowitz, J. Jonson, J. W. Kaminski, E. Marmer, R. Park, K. J. Pringle, S. Schroeder, S. Szopa, T. Takemura, G. Zeng, T. J. Keating, and A. Zuber. 2008. "A multi-model assessment of pollution transport to the Arctic." Atmos. Chem. Phys., 8 (17): 5353-5372 [10.5194/acp-8-5353-2008]

    Duncan, B., and J. Logan. 2008. "Model analysis of the factors regulating the trends and variability of carbon monoxide between 1988 and 1997." Atmos. Chem. Phys., 8 (24): 7389-7403 [10.5194/acp-8-7389-2008]

    Duncan, B., J. West, Y. Yoshida, A. Fiore, and J. Ziemke. 2008. "The influence of European pollution on ozone in the Near East and northern Africa." Atmos. Chem. Phys., 8 (8): 2267-2283 [10.5194/acp-8-2267-2008]

    Sanderson, M., F. Dentener, A. Fiore, et al. C. Cuvelier, T. Keating, A. Zuber, C. Atherton, D. Bergmann, T. L. Diehl, R. Doherty, B. N. Duncan, P. Hess, L. Horowitz, D. S. Jacob, J. Jonson, J. Kaminski, A. Lupu, I. Mackenzie, E. Mancini, E. Marmer, R. Park, G. Pitari, M. Prather, K. Pringle, S. Schroeder, M. Schultz, D. T. Shindell, S. Sszopa, O. Wild, and P. Wind. 2008. "A multi-model study of the hemispheric transport and deposition of oxidised nitrogen." Geophysical Research Letters, 35 (17): L17815 [10.1029/2008GL035389]

    Duncan, B. N., and J. A. Logan. 2008. "Model analysis of the factors regulating the trends of carbon monoxide, 1988-1997." Atmos Chem Phys, 8: 7389-7403.

    Duncan, B., S. Strahan, Y. Yoshida, S. Steenrod, and N. Livesey. 2007. "Model study of the cross-tropopause transport of biomass burning pollution." Atmos Chem Phys, 7: 3713-3736.

    Strahan, S., B. Duncan, and P. Hoor. 2007. "Observationally derived transport diagnostics for the lowermost stratosphere and their application to the GMI chemistry and transport model." Atmos Chem Phys, 7: 2435-2445.

    Duncan, B. N., J. A. Logan, I. A. Megretskaia, et al. R. M. Yantosca, P. C. Novelli, N. B. Jones, and C. P. Rinsland. 2007. "The global budget of CO, 1988-1997: source estimates and validation with a global model." J Geophys Res, 112 (D22301, doi:101029/):

    Allen, D. J., K. E. Pickering, B. N. Duncan, et al. S. E. Strahan, J. M. Rodriguez, and M. R. Damon. 2007. "An Evaluation of the Impact of Lightning NO Emissions in the GMI Model on Upper Tropospheric Chemistry in the Tropics using SHADOZ data." AGU Fall Meeting Abstracts, (A21D-0737): San Francisco, CA: D737.

    Schoeberl, M. R., B. N. Duncan, A. R. Douglass, et al. J. Waters, N. Livesey, W. Read, and M. Filipiak. 2006. "The Carbon Monoxide Tape Recorder ." Journal of Geophysical Research , 33:

    Ziemke, J., S. Chandra, B. Duncan, et al. L. Froidevaux, P. K. Bhartia, P. Levelt, and J. Waters. 2006. "Tropospheric ozone determined from Aura OMI and MLS: Evaluation of measurements and comparison with the Global Modeling Initiative's Chemical Transport Model." J. Geophys. Res., 111 (D19): D19303 [10.1029/2006JD007089]

    Wang, J. S., J. A. Logan, M. B. McElroy, et al. B. N. Duncan, I. A. Megretskaia, and R. M. Yantosca. 2004. "A 3-D model analysis of the slowdown and interannual variability in the methane growth rate from 1988 to 1997." Global Biogeochem. Cycles, 18 (3): GB3011 [10.1029/2003GB002180]

    Chin, M., P. Ginoux, S. Kinne, et al. O. Torres, B. N. Holben, B. N. Duncan, R. V. Martin, J. A. Logan, A. Higurashi, and T. Nakajima. 2002. "Tropospheric aerosol optical thickness from the GOCART model and comparisons with satellite and sunphotometer measurements." J. Atm. Sci., 59: 461-483.

    Brief Bio

    Dr. Bryan N. Duncan is an atmospheric scientist in the Atmospheric Chemistry and Dynamics Laboratory at NASA Goddard Space Flight Center.  He is a deputy project scientist for the NASA Aura satellite mission.  He has expertise in air quality, tropospheric trace gas composition, and carbon modeling.

    Publications

    Refereed

    Elshorbany, Y., B. Duncan, S. Strode, J. Wang, and J. Kouatchou. 2016. "The description and validation of the computationally Efficient CH4–CO–OH (ECCOHv1.01) chemistry module for 3-D model applications ." Geoscientific Model Development 9 799-822 [doi:10.5194/gmd-9-799-2016]

    Krotkov, N. A., C. A. McLinden, C. Li, et al. L. N. Lamsal, E. A. Celarier, S. V. Marchenko, W. H. Swartz, E. J. Bucsela, J. Joiner, B. N. Duncan, K. F. Boersma, J. P. Veefkind, P. F. Levelt, V. E. Fioletov, R. R. Dickerson, H. He, Z. Lu, and D. G. Streets. 2016. "Aura OMI observations of regional SO2 and NO2 pollution changes from 2005 to 2015." Atmos. Chem. Phys. 16 (7): 4605-4629 [10.5194/acp-16-4605-2016]

    Ott, L. E., B. N. Duncan, A. M. Thompson, et al. G. Diskin, Z. Fasnacht, A. O. Langford, M. Lin, A. M. Molod, J. E. Nielsen, S. E. Pusede, K. Wargan, A. J. Weinheimer, and Y. Yoshida. 2016. "requency and impact of summertime stratospheric intrusions over Maryland during DISCOVER-AQ (2011): New evidence from NASA's GEOS-5 simulations." J. Geophys. Res. Atmos. [10.1002/2015jd024052]

    Nicely, J. M., D. C. Anderson, T. P. Canty, et al. R. J. Salawitch, G. M. Wolfe, E. C. Apel, S. R. Arnold, E. L. Atlas, N. J. Blake, J. F. Bresch, T. L. Campos, R. R. Dickerson, B. Duncan, L. K. Emmons, M. J. Evans, R. P. Fernandez, J. Flemming, S. R. Hall, T. F. Hanisco, S. B. Honomichl, R. S. Hornbrook, V. Huijnen, L. Kaser, D. E. Kinnison, J.-F. Lamarque, J. Mao, S. A. Monks, D. D. Montzka, L. L. Pan, D. D. Riemer, A. Saiz-Lopez, S. D. Steenrod, M. H. Stell, S. Tilmes, S. Turquety, K. Ullmann, and A. J. Weinheimer. 2016. "An observationally constrained evaluation of the oxidative capacity in the tropical western Pacific troposphere." J. Geophys. Res. Atmos. (In Press) [10.1002/2016jd025067]

    Strode, S. A., H. M. Worden, M. Damon, et al. A. R. Douglass, B. N. Duncan, L. K. Emmons, J.-F. Lamarque, M. Manyin, L. D. Oman, J. M. Rodriguez, S. E. Strahan, and S. Tilmes. 2016. "Interpreting space-based trends in carbon monoxide with multiple models." Atmos. Chem. Phys. 16 (11): 7285-7294 [10.5194/acp-16-7285-2016]

    Duncan, B. N., L. N. Lamsal, A. M. Thompson, et al. Y. Yoshida, Z. Lu, D. G. Streets, M. M. Hurwitz, and K. E. Pickering. 2015. " A space-based, high-resolution view of notable changes in urban NO x pollution around the world (2005-2014) ." J. Geophys. Res. Atmos. [10.1002/2015jd024121]

    Ziemke, J. R., A. R. Douglass, L. D. Oman, S. E. Strahan, and B. N. Duncan. 2015. "Tropospheric ozone variability in the tropics from ENSO to MJO and shorter timescales." Atmos. Chem. Phys. 15 (14): 8037-8049 [10.5194/acp-15-8037-2015]

    Monks, S. A., S. R. Arnold, L. K. Emmons, et al. K. S. Law, S. Turquety, B. N. Duncan, J. Flemming, V. Huijnen, S. Tilmes, J. Langner, J. Mao, Y. Long, J. L. Thomas, S. D. Steenrod, J. C. Raut, C. Wilson, M. P. Chipperfield, G. S. Diskin, A. Weinheimer, H. Schlager, and G. Ancellet. 2015. "Multi-model study of chemical and physical controls on transport of anthropogenic and biomass burning pollution to the Arctic." Atmos. Chem. Phys. 15 (6): 3575-3603 [10.5194/acp-15-3575-2015]

    Arnold, S. R., L. K. Emmons, S. A. Monks, et al. K. S. Law, D. A. Ridley, S. Turquety, S. Tilmes, J. L. Thomas, I. Bouarar, J. Flemming, V. Huijnen, J. Mao, B. N. Duncan, S. Steenrod, Y. Yoshida, J. Langner, and Y. Long. 2015. "Biomass burning influence on high-latitude tropospheric ozone and reactive nitrogen in summer 2008: a multi-model analysis based on POLMIP simulations." Atmos. Chem. Phys. 15 (11): 6047-6068 [10.5194/acp-15-6047-2015]

    Lamsal, L. N., B. N. Duncan, Y. Yoshida, et al. N. A. Krotkov, K. E. Pickering, D. G. Streets, and Z. Lu. 2015. "U.S. NO2 trends (2005–2013): EPA Air Quality System (AQS) data versus improved observations from the Ozone Monitoring Instrument (OMI)." Atmos. Env. 110 130-143 [10.1016/j.atmosenv.2015.03.055]

    Emmons, L. K., S. R. Arnold, S. A. Monks, et al. V. Huijnen, S. Tilmes, K. S. Law, J. L. Thomas, J.-C. Raut, I. Bouarar, S. Turquety, Y. Long, B. N. Duncan, S. D. Steenrod, S. A. Strode, J. Flemming, J. Mao, J. Langner, A. M. Thompson, D. Tarasick, E. C. Apel, D. R. Blake, R. C. Cohen, J. Dibb, G. S. Diskin, A. Fried, S. R. Hall, L. G. Huey, A. J. Weinheimer, A. Wisthaler, T. Mikoviny, J. Nowak, J. Pieschl, J. M. Roberts, T. Ryerson, C. Warneke, and D. Helmig. 2015. "The POLARCAT Model Intercomparison Project (POLMIP): overview and evaluation with observations ." Atmos. Chem. Phys. 15 6721-6744 [10.5194/acp-15-6721-2015]

    de Foy, B., Z. Lu, D. G. Streets, L. N. Lamsal, and B. N. Duncan. 2015. "Estimates of power plant NOx emissions and lifetimes from OMI NO2 satellite retrievals." Atmospheric Environment 116 1-11 [10.1016/j.atmosenv.2015.05.056]

    Lu, Z., D. G. Streets, B. de Foy, et al. L. N. Lamsal, B. N. Duncan, and J. Xing. 2015. "Emissions of nitrogen oxides from US urban areas: estimation from Ozone Monitoring Instrument retrievals for 2005–2014 ." Atmos. Chem. Phys. 15 10367-10383 [10.5194/acp-15-10367-2015]

    Cook, M. B., K. E. Pickering, J. H. Crawford, et al. B. N. Duncan, C. P. Loughner, G. S. Diskin, A. Fried, and A. J. Weinheimer. 2015. "Spatial and temporal variability of trace gas columns derived from WRF/Chem regional model output: Planning for geostationary observations of atmospheric composition." Atmospheric Environment 118 28–44 [10.1016/j.atmosenv.2015.07.024]

    Strode, S. A., B. N. Duncan, E. A. Yegorova, et al. J. Kouatchou, J. R. Ziemke, and A. R. Douglass. 2015. "Implications of carbon monoxide bias for methane lifetime and atmospheric composition in chemistry climate models." Atmospheric Chemistry and Physics 15 11789–11805 [10.5194/acp-15-11789-2015]

    Choi, S., J. Joiner, Y. Choi, et al. B. N. Duncan, A. Vasilkov, N. Krotkov, and E. Bucsela. 2014. "First estimates of global free-tropospheric NO2 abundances derived using a cloud-slicing technique applied to satellite observations from the Aura Ozone Monitoring Instrument (OMI)." Atmos. Chem. Phys. 14 (19): 10565-10588 [10.5194/acp-14-10565-2014]

    Ziemke, J. R., M. A. Olsen, J. C. Witte, et al. A. R. Douglass, S. E. Strahan, K. Wargan, X. Liu, M. Schoeberl, K. Yang, T. Kaplan, S. Pawson, B. N. Duncan, P. Newman, P. K. Bhartia, and M. K. Heney. 2014. "Assessment and applications of NASA ozone data products derived from Aura OMI/MLS satellite measurements in context of the GMI chemical transport model." J. Geophys. Res. Atmos. 119 (9): 5671-5699 [10.1002/2013JD020914]

    Duncan, B. N., A. I. Prados, L. Lamsal, et al. Y. Liu, D. Streets, P. Gupta, E. Hilsenrath, R. A. Kahn, J. E. Nielsen, A. Beyersdorf, S. Burton, A. Fiore, J. Fishman, D. Henze, C. Hostetler, N. A. Krotkov, P. Lee, M. Lin, S. Pawson, G. Pfister, K. E. Pickering, R. B. Pierce, Y. Yoshida, and L. Ziemba. 2014. "Satellite data of atmospheric pollution for U.S. air quality applications: Examples of applications, summary of data end-user resources, answers to FAQs, and common mistakes to avoid." Atmospheric Environment 94 647-662 [10.1016/j.atmosenv.2014.05.061]

    Streets, D., B. de Foy, B. N. Duncan, et al. L. N. Lamsal, C. Li, and Z. Lu. 2014. "Using Satellite Observations to Measure." Environmental Manager 64 16-21

    Warner, J. X., R. Yang, Z. Wei, et al. F. Carminati, A. Tangborn, Z. Sun, W. Lahoz, J.-L. Attié, L. El Amraoui, and B. N. Duncan. 2014. "Global carbon monoxide products from combined AIRS, TES and MLS measurements on A-train satellites." Atmos. Chem. Phys. 14 (1): 103-114 [10.5194/acp-14-103-2014]

    Zhu, L., D. J. Jacob, L. J. Mickley, et al. E. A. Marais, D. S. Cohan, Y. Yoshida, B. N. Duncan, G. González Abad, and K. V. Chance. 2014. "Anthropogenic emissions of highly reactive volatile organic compounds in eastern Texas inferred from oversampling of satellite (OMI) measurements of HCHO columns." Environmental Research Letters 9 (11): 114004 [10.1088/1748-9326/9/11/114004]

    de Foy, B., J. L. Wilkins, Z. Lu, D. G. Streets, and B. N. Duncan. 2014. "Model evaluation of methods for estimating surface emissions and chemical lifetimes from satellite data." Atmospheric Environment 98 66–77 [10.1016/j.atmosenv.2014.08.051]

    Streets, D. G., T. Canty, G. R. Carmichael, et al. B. de Foy, R. R. Dickerson, B. N. Duncan, D. P. Edwards, J. A. Haynes, D. K. Henze, M. R. Houyoux, D. J. Jacobi, N. A. Krotkov, L. N. Lamsal, Y. Liu, Z. Lu, R. V. Martini, G. G. Pfister, R. W. Pinder, R. J. Salawitch, and K. J. Wechti. 2013. "Emissions estimation from satellite retrievals: A review of current capability." Atmospheric Environment 77 1011-1042 [10.1016/j.atmosenv.2013.05.051]

    Duncan, B. N., Y. Yoshida, B. de Foy, et al. L. N. Lamsal, D. G. Streets, Z. Lu, K. E. Pickering, and N. A. Krotkov. 2013. "The observed response of Ozone Monitoring Instrument (OMI) NO2 columns to NOx emission controls on power plants in the United States: 2005–2011." Atmospheric Environment 81 102-111 [10.1016/j.atmosenv.2013.08.068]

    Wild, O., A. M. Fiore, D. T. Shindell, et al. R. M. Doherty, W. J. Collins, F. J. Dentener, M. G. Schultz, S. Gong, I. A. MacKenzie, G. Zeng, P. Hess, B. N. Duncan, D. J. Bergmann, S. Szopa, J. E. Jonson, T. J. Keating, and A. Zuber. 2012. "Modelling future changes in surface ozone: a parameterized approach." Atmos. Chem. Phys. 12 (4): 2037-2054 [10.5194/acp-12-2037-2012]

    Fry, M. M., V. Naik, J. J. West, et al. M. D. Schwarzkopf, A. M. Fiore, W. J. Collins, F. J. Dentener, D. T. Shindell, C. Atherton, D. Bergmann, B. N. Duncan, P. Hess, I. A. MacKenzie, E. Marmer, M. G. Schultz, S. Szopa, O. Wild, and G. Zeng. 2012. "The influence of ozone precursor emissions from four world regions on tropospheric composition and radiative climate forcing." J. Geophys. Res. 117 (D7): D07306 [10.1029/2011JD017134]

    Witte, J. C., A. R. Douglass, A. da Silva, et al. O. Torres, R. Levy, and B. N. Duncan. 2011. "NASA A-Train and Terra observations of the 2010 Russian wildfires." Atmos. Chem. Phys. 11 (17): 9287-9301 [10.5194/acp-11-9287-2011]

    Liang, Q., J. M. Rodriguez, A. R. Douglass, et al. J. Crawford, E. Apel, H. Bian, D. Blake, W. Brune, M. Chin, P. R. Colarco, A. Silva, G. Diskin, B. N. Duncan, L. Huey, D. Knapp, D. Montzka, J. Nielsen, J. Olson, S. Pawson, D. Riemer, A. Weinheimer, and A. Wisthaler. 2011. "Reactive nitrogen, ozone and ozone production in the Arctic troposphere and the impact of stratosphere-troposphere exchange." Atmos. Chem. Phys. 11 (24): 13181-13199 [10.5194/acp-11-13181-2011]

    Witte, J. C., B. N. Duncan, A. R. Douglass, et al. T. Kurosu, K. Chance, and C. Retscher. 2011. "The unique OMI HCHO/NO2 feature during the 2008 Beijing Olympics: Implications for ozone production sensitivity." Atmospheric Environment 45 (18): 3103-3111 [10.1016/j.atmosenv.2011.03.015]

    Duncan, B. N., Y. Yoshida, J. Olson, et al. D. Lee, C. Retscher, R. Martin, L. Lamsal, Y. Hu, K. E. Pickering, D. Allen, and C. Crawford. 2010. "Application of OMI observations to a space-based indicator of NOx and VOC controls on surface ozone formation." Atmos Environ 44 (18): 2213-2223 [10.1016/j.atmosenv.2010.03.010]

    Allen, D. J., K. E. Pickering, B. N. Duncan, and M. R. Damon. 2010. "Impact of lightning NO emissions on North American photochemistry as determined using the Global Modeling Initiative (GMI) model." J Geophys Res 115 (D22): D22301 [10.1029/2010JD014062]

    Ott, L., B. N. Duncan, S. Pawson, et al. P. Colarco, M. Chin, C. A. Randles, T. Diehl, and E. Nielsen. 2010. "Influence of the 2006 Indonesian biomass burning aerosols on tropical dynamics studied with the GEOS-5 AGCM." J Geophys Res 115 (D14): D14121 [10.1029/2009JD013181]

    Yoshida, Y., B. N. Duncan, C. Retscher, et al. K. E. Pickering, E. A. Celarier, J. Joiner, F. Boersma, and P. Veefkind. 2010. "The impact of the 2005 Gulf hurricanes on pollution emissions as inferred from Ozone Monitoring Instrument (OMI) nitrogen dioxide." Atmos Environ 44 (11): 1443-1448 [10.1016/j.atmosenv.2010.01.037]

    Fiore, A., F. J. Dentener, O. Wild, et al. C. Cuvelier, M. G. Schultz, P. Hess, C. Textor, M. Schulz, R. M. Doherty, L. W. Horowitz, I. A. MacKenzie, M. G. Sanderson, D. T. Shindell, D. S. Stevenson, S. Szopa, R. Van Dingenen, G. Zeng, C. Atherton, D. Bergmann, I. Bey, G. Carmichael, W. J. Collins, B. N. Duncan, G. Faluvegi, G. Folberth, M. Gauss, S. Gong, D. Hauglustaine, T. Holloway, I. S. Isaksen, D. J. Jacob, J. E. Jonson, J. W. Kaminski, T. J. Keating, A. Lupu, E. Marmer, V. Montanaro, R. J. Park, G. Pitari, K. J. Pringle, J. A. Pyle, S. Schroeder, M. G. Vivanco, P. Wind, G. Wojcik, S. Wu, and A. Zuber. 2009. "Multimodel estimates of intercontinental source-receptor relationships for ozone pollution." J. Geophys. Res. 114 (D4): D04301 [10.1029/2008JD010816]

    Anenberg, S. C., J. J. West, A. M. Fiore, et al. D. A. Jaffe, M. J. Prather, D. Bergmann, K. Cuvelier, F. J. Dentener, B. N. Duncan, M. Gauss, P. Hess, J. E. Jonson, A. Lupu, I. A. MacKenzie, E. Marmer, R. J. Park, M. G. Sanderson, M. Schultz, D. T. Shindell, S. Szopa, G. Vivanco, G. Vivanco, and G. Vivanco. 2009. "Intercontinental impacts of ozone pollution on human mortality." Environ Sci Technol 43 (17): 6482-6487 [10.1021/es900518z]

    Chandra, S., J. Ziemke, B. Duncan, et al. T. Diehl, N. Livesey, and L. Froidevaux. 2009. "Effects of the 2006 El Niño on tropospheric ozone and carbon monoxide: implications for dynamics and biomass burning." Atmos. Chem. Phys. 9 (13): 4239-4249 [10.5194/acp-9-4239-2009]

    Reidmiller, D., A. Fiore, D. Jaffe, et al. D. Bergmann, C. Cuvelier, E. Dentener, B. N. Duncan, M. Gauss, S. Gong, P. Hess, J. Jonson, A. Lupu, E. Marmer, R. Park, M. Schultz, D. T. Shindell, S. Szopa, M. Vivanco, O. Wild, A. Zuber, G. Folberth, and T. Keating. 2009. "The influence of foreign vs. North American emissions on surface ozone in the U.S." Atmos Chem Phys 9 (14): 5027-5042 [10.5194/acp-9-5027-2009]

    Langmann, B., B. N. Duncan, C. Textor, J. Trentmann, and G. van der Werf. 2009. "Vegetation fire emissions and their impact on air pollution and climate." Atmospheric Environment 43 (1): 107-116 [10.1016/j.atmosenv.2008.09.047]

    Liang, Q., A. R. Douglass, B. N. Duncan, R. S. Stolarski, and J. C. Witte. 2009. "The governing processes and timescales of stratosphere-to-troposphere transport and its contribution to ozone in the Arctic troposphere." Atmos. Chem. Phys. 9 (9): 3011-3025 [10.5194/acp-9-3011-2009]

    Ziemke, J. R., S. Chandra, B. N. Duncan, et al. M. R. Schoeberl, M. R. Damon, O. Torres, and P. K. Bhartia. 2009. "Recent biomass burning in the tropics and related changes in tropospheric ozone." Geophysical Research Letters 36 (15): L15819 [10.1029/2009GL039303]

    Liu, H., J. H. Crawford, D. B. Considine, et al. S. E. Platnick, P. M. Norris, B. N. Duncan, R. B. Pierce, G. Chen, and R. M. Yantosca. 2009. "Sensitivity of photolysis frequencies and key tropospheric oxidants in a global model to cloud vertical distributions and optical properties." J. Geophys. Res. 114 (D10): D10305 [10.1029/2008JD011503]

    Duncan, B., Y. Yoshida, M. Damon, A. Douglass, and J. Witte. 2009. "Temperature dependence of factors controlling isoprene emissions." Geophysical Research Letters 36 (5): L05813 [10.1029/2008GL037090]

    Wu, S., B. Duncan, D. Jacob, A. Fiore, and O. Wild. 2009. "Chemical nonlinearities in relating intercontinental ozone pollution to anthropogenic emissions." Geophysical Research Letters 36 (5): L05806 [10.1029/2008GL036607]

    Shindell, D. T., M. Chin, F. Dentener, et al. R. M. Doherty, G. S. Faluvegi, A. M. Fiore, P. Hess, D. M. Koch, I. A. MacKenzie, M. G. Sanderson, M. G. Schultz, M. Schulz, D. S. Stevenson, H. Teich, C. Textor, O. Wild, D. J. Bergmann, I. Bey, H. Bian, C. Cuvelier, B. N. Duncan, G. Folberth, L. W. Horowitz, J. Jonson, J. W. Kaminski, E. Marmer, R. Park, K. J. Pringle, S. Schroeder, S. Szopa, T. Takemura, G. Zeng, T. J. Keating, and A. Zuber. 2008. "A multi-model assessment of pollution transport to the Arctic." Atmos. Chem. Phys. 8 (17): 5353-5372 [10.5194/acp-8-5353-2008]

    Duncan, B., and J. Logan. 2008. "Model analysis of the factors regulating the trends and variability of carbon monoxide between 1988 and 1997." Atmos. Chem. Phys. 8 (24): 7389-7403 [10.5194/acp-8-7389-2008]

    Duncan, B., J. West, Y. Yoshida, A. Fiore, and J. Ziemke. 2008. "The influence of European pollution on ozone in the Near East and northern Africa." Atmos. Chem. Phys. 8 (8): 2267-2283 [10.5194/acp-8-2267-2008]

    Sanderson, M., F. Dentener, A. Fiore, et al. C. Cuvelier, T. Keating, A. Zuber, C. Atherton, D. Bergmann, T. L. Diehl, R. Doherty, B. N. Duncan, P. Hess, L. Horowitz, D. S. Jacob, J. Jonson, J. Kaminski, A. Lupu, I. Mackenzie, E. Mancini, E. Marmer, R. Park, G. Pitari, M. Prather, K. Pringle, S. Schroeder, M. Schultz, D. T. Shindell, S. Sszopa, O. Wild, and P. Wind. 2008. "A multi-model study of the hemispheric transport and deposition of oxidised nitrogen." Geophysical Research Letters 35 (17): L17815 [10.1029/2008GL035389]

    Duncan, B. N., and J. A. Logan. 2008. "Model analysis of the factors regulating the trends of carbon monoxide, 1988-1997." Atmos Chem Phys 8 7389-7403

    Duncan, B., S. Strahan, Y. Yoshida, S. Steenrod, and N. Livesey. 2007. "Model study of the cross-tropopause transport of biomass burning pollution." Atmos Chem Phys 7 3713-3736

    Strahan, S., B. Duncan, and P. Hoor. 2007. "Observationally derived transport diagnostics for the lowermost stratosphere and their application to the GMI chemistry and transport model." Atmos Chem Phys 7 2435-2445

    Duncan, B. N., J. A. Logan, I. A. Megretskaia, et al. R. M. Yantosca, P. C. Novelli, N. B. Jones, and C. P. Rinsland. 2007. "The global budget of CO, 1988-1997: source estimates and validation with a global model." J Geophys Res 112 (D22301, doi:101029/):

    Allen, D. J., K. E. Pickering, B. N. Duncan, et al. S. E. Strahan, J. M. Rodriguez, and M. R. Damon. 2007. "An Evaluation of the Impact of Lightning NO Emissions in the GMI Model on Upper Tropospheric Chemistry in the Tropics using SHADOZ data." AGU Fall Meeting Abstracts D737

    Schoeberl, M. R., B. N. Duncan, A. R. Douglass, et al. J. Waters, N. Livesey, W. Read, and M. Filipiak. 2006. "The Carbon Monoxide Tape Recorder ." Journal of Geophysical Research 33

    Ziemke, J., S. Chandra, B. Duncan, et al. L. Froidevaux, P. K. Bhartia, P. Levelt, and J. Waters. 2006. "Tropospheric ozone determined from Aura OMI and MLS: Evaluation of measurements and comparison with the Global Modeling Initiative's Chemical Transport Model." J. Geophys. Res. 111 (D19): D19303 [10.1029/2006JD007089]

    Wang, J. S., J. A. Logan, M. B. McElroy, et al. B. N. Duncan, I. A. Megretskaia, and R. M. Yantosca. 2004. "A 3-D model analysis of the slowdown and interannual variability in the methane growth rate from 1988 to 1997." Global Biogeochem. Cycles 18 (3): GB3011 [10.1029/2003GB002180]

    Chin, M., P. Ginoux, S. Kinne, et al. O. Torres, B. N. Holben, B. N. Duncan, R. V. Martin, J. A. Logan, A. Higurashi, and T. Nakajima. 2002. "Tropospheric aerosol optical thickness from the GOCART model and comparisons with satellite and sunphotometer measurements." J. Atm. Sci. 59 461-483.

                                                                                                                                                                                            
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