Brad Weir

Brad Weir

  • SCIENTIST
  • 301.614.6033
  • NASA/GSFC
  • Mail Code: 610.1
  • Greenbelt , MD 20771
  • Employer: UNIVERSITIES SPACE RESEARCH ASSOCIATION
  • Brief Bio

    Dr. Brad Weir is the lead developer of NASA's Goddard Earth Observing System (GEOS) Constituent Data Assimilation System (CoDAS) — a state-of-the-art statistical method for estimating atmospheric trace gas abundances based on satellite observations. He has over 10 years of experience developing and applying mathematical and statistical methods to address questions about the physics, chemistry, and biology of the Earth's atmosphere, ocean, and land surface. His work has appeared in Science, the websites of National Geographic and the BBC, the NASA COVID-19 Dashboard, and the NASA/ESA/JAXA trilateral Earth Observing Dashboard.

    Positions/Employment

    10/2013 - Present

    Scientist

    USRA/GMAO, NASA Goddard Space Flight Center, Greenbelt, MD
    9/2010 - 10/2013

    Post-doctoral Research Associate

    Oregon State University, College of Earth, Atmosphere, and Oceanic Sciences, Corvallis, OR

    Education

    • Ph.D., Mathematics, University of Arizona (2010)
    • B.A., Mathematics, New York University (2003)

    Publications

    Refereed

    Campbell, J. F., B. Lin, J. Dobler, et al. S. Pal, K. Davis, M. D. Obland, W. Erxleben, D. McGregor, C. O’Dell, E. Bell, B. Weir, T. Fan, S. Kooi, I. Gordon, A. Corbett, and R. Kochanov. 2020. "Field Evaluation of Column CO2 Retrievals from Intensity‐Modulated Continuous‐Wave Differential Absorption Lidar Measurements during the ACT‐America Campaign." Earth and Space Science, (e2019EA000847): (In Press) [10.1029/2019ea000847]

    Wargan, K., B. Weir, G. L. Manney, S. E. Cohn, and N. J. Livesey. 2020. "The Anomalous 2019 Antarctic Ozone Hole in the GEOS Constituent Data Assimilation System With MLS Observations." Journal of Geophysical Research: Atmospheres, 125 (18): [10.1029/2020jd033335]

    Lee, E., F. Zeng, R. D. Koster, et al. L. E. Ott, S. P. Mahanama, B. Weir, B. Poulter, and T. Oda. 2020. "Impact of a Regional US Drought on Land and Atmospheric Carbon." Journal of Geophysical Research: Biogeosciences, 125 (8): [10.1029/2019jg005599]

    Bell, E., C. W. O'Dell, K. J. Davis, et al. J. Campbell, E. Browell, A. Scott Denning, J. Dobler, W. Erxleben, T. Fan, S. Kooi, B. Lin, S. Pal, and B. Weir. 2020. "Evaluation of OCO‐2 XCO2 Variability at Local and Synoptic Scales using Lidar and In Situ Observations from the ACT‐America Campaigns." Journal of Geophysical Research: Atmospheres, 125: [10.1029/2019jd031400]

    Wargan, K., N. Kramarova, B. Weir, S. Pawson, and S. M. Davis. 2020. "Toward a Reanalysis of Stratospheric Ozone for Trend Studies: Assimilation of the Aura Microwave Limb Sounder and Ozone Mapping and Profiler Suite Limb Profiler Data." Journal of Geophysical Research: Atmospheres, 125 (4): [10.1029/2019jd031892]

    Schuh, A. E., A. R. Jacobson, S. Basu, et al. B. Weir, D. Baker, K. Bowman, F. Chevallier, S. Crowell, K. J. Davis, F. Deng, S. Denning, L. Feng, D. Jones, J. Liu, and P. I. Palmer. 2019. "Quantifying the Impact of Atmospheric Transport Uncertainty on CO2 Surface Flux Estimates." Global Biogeochemical Cycles, 33: 484-500 [10.1029/2018gb006086]

    Lee, E., F. Zeng, R. D. Koster, et al. B. Weir, L. E. Ott, and B. Poulter. 2018. "The impact of spatiotemporal variability in atmospheric CO2 concentration on global terrestrial carbon fluxes." Biogeosciences, 15: 5635-5652 [10.5194/bg-15-5635-2018]

    Eldering, A., P. O. Wennberg, D. Crisp, et al. D. S. Schimel, M. R. Gunson, A. Chatterjee, J. Liu, F. M. Schwandner, Y. Sun, C. W. O’Dell, C. Frankenberg, T. Taylor, B. Fisher, G. B. Osterman, D. Wunch, J. Hakkarainen, J. Tamminen, and B. Weir. 2017. "The Orbiting Carbon Observatory-2 early science investigations of regional carbon dioxide fluxes." Science, 358 (6360): eaam5745 [10.1126/science.aam5745]

    Weir, B., R. N. Miller, and Y. H. Spitz. 2013. "A potential implicit particle method for high-dimensional systems." Nonlinear Processes in Geophysics, 20: 1047-1060 [10.5194/npg-20-1047-2013]

    Weir, B., R. N. Miller, and Y. H. Spitz. 2013. "Implicit Estimation of Ecological Model Parameters." Bulletin of Mathematical Biology, 75 (2): 223-257 [10.1007/s11538-012-9801-6]

    Weir, B., Y. Uchiyama, E. M. Lane, J. M. Restrepo, and J. C. McWilliams. 2011. "A vortex force analysis of the interaction of rip currents and surface gravity waves." Journal of Geophysical Research, 116 (C5): C05001 [10.1029/2010jc006232]

    Non-Refereed

    Weir, B., L. E. Ott, G. J. Collatz, et al. S. R. Kawa, B. Poulter, A. Chatterjee, T. Oda, and S. Pawson. 2020. "Calibrating satellite-derived carbon fluxes for retrospective and near real-time assimilation systems." Atmospheric Chemistry and Physics (Submitted) [10.5194/acp-2020-496]

    Brief Bio

    Dr. Brad Weir is the lead developer of NASA's Goddard Earth Observing System (GEOS) Constituent Data Assimilation System (CoDAS) — a state-of-the-art statistical method for estimating atmospheric trace gas abundances based on satellite observations. He has over 10 years of experience developing and applying mathematical and statistical methods to address questions about the physics, chemistry, and biology of the Earth's atmosphere, ocean, and land surface. His work has appeared in Science, the websites of National Geographic and the BBC, the NASA COVID-19 Dashboard, and the NASA/ESA/JAXA trilateral Earth Observing Dashboard.

    Publications

    Refereed

    Campbell, J. F., B. Lin, J. Dobler, et al. S. Pal, K. Davis, M. D. Obland, W. Erxleben, D. McGregor, C. O’Dell, E. Bell, B. Weir, T. Fan, S. Kooi, I. Gordon, A. Corbett, and R. Kochanov. 2020. "Field Evaluation of Column CO2 Retrievals from Intensity‐Modulated Continuous‐Wave Differential Absorption Lidar Measurements during the ACT‐America Campaign." Earth and Space Science (In Press) [10.1029/2019ea000847]

    Wargan, K., B. Weir, G. L. Manney, S. E. Cohn, and N. J. Livesey. 2020. "The Anomalous 2019 Antarctic Ozone Hole in the GEOS Constituent Data Assimilation System With MLS Observations." Journal of Geophysical Research: Atmospheres 125 (18): [10.1029/2020jd033335]

    Lee, E., F. Zeng, R. D. Koster, et al. L. E. Ott, S. P. Mahanama, B. Weir, B. Poulter, and T. Oda. 2020. "Impact of a Regional US Drought on Land and Atmospheric Carbon." Journal of Geophysical Research: Biogeosciences 125 (8): [10.1029/2019jg005599]

    Bell, E., C. W. O'Dell, K. J. Davis, et al. J. Campbell, E. Browell, A. Scott Denning, J. Dobler, W. Erxleben, T. Fan, S. Kooi, B. Lin, S. Pal, and B. Weir. 2020. "Evaluation of OCO‐2 XCO2 Variability at Local and Synoptic Scales using Lidar and In Situ Observations from the ACT‐America Campaigns." Journal of Geophysical Research: Atmospheres 125 [10.1029/2019jd031400]

    Wargan, K., N. Kramarova, B. Weir, S. Pawson, and S. M. Davis. 2020. "Toward a Reanalysis of Stratospheric Ozone for Trend Studies: Assimilation of the Aura Microwave Limb Sounder and Ozone Mapping and Profiler Suite Limb Profiler Data." Journal of Geophysical Research: Atmospheres 125 (4): [10.1029/2019jd031892]

    Schuh, A. E., A. R. Jacobson, S. Basu, et al. B. Weir, D. Baker, K. Bowman, F. Chevallier, S. Crowell, K. J. Davis, F. Deng, S. Denning, L. Feng, D. Jones, J. Liu, and P. I. Palmer. 2019. "Quantifying the Impact of Atmospheric Transport Uncertainty on CO2 Surface Flux Estimates." Global Biogeochemical Cycles 33 484-500 [10.1029/2018gb006086]

    Lee, E., F. Zeng, R. D. Koster, et al. B. Weir, L. E. Ott, and B. Poulter. 2018. "The impact of spatiotemporal variability in atmospheric CO2 concentration on global terrestrial carbon fluxes." Biogeosciences 15 5635-5652 [10.5194/bg-15-5635-2018]

    Eldering, A., P. O. Wennberg, D. Crisp, et al. D. S. Schimel, M. R. Gunson, A. Chatterjee, J. Liu, F. M. Schwandner, Y. Sun, C. W. O’Dell, C. Frankenberg, T. Taylor, B. Fisher, G. B. Osterman, D. Wunch, J. Hakkarainen, J. Tamminen, and B. Weir. 2017. "The Orbiting Carbon Observatory-2 early science investigations of regional carbon dioxide fluxes." Science 358 (6360): eaam5745 [10.1126/science.aam5745]

    Weir, B., R. N. Miller, and Y. H. Spitz. 2013. "A potential implicit particle method for high-dimensional systems." Nonlinear Processes in Geophysics 20 1047-1060 [10.5194/npg-20-1047-2013]

    Weir, B., R. N. Miller, and Y. H. Spitz. 2013. "Implicit Estimation of Ecological Model Parameters." Bulletin of Mathematical Biology 75 (2): 223-257 [10.1007/s11538-012-9801-6]

    Weir, B., Y. Uchiyama, E. M. Lane, J. M. Restrepo, and J. C. McWilliams. 2011. "A vortex force analysis of the interaction of rip currents and surface gravity waves." Journal of Geophysical Research 116 (C5): C05001 [10.1029/2010jc006232]

    Non-Refereed

    Weir, B., L. E. Ott, G. J. Collatz, et al. S. R. Kawa, B. Poulter, A. Chatterjee, T. Oda, and S. Pawson. 2020. "Calibrating satellite-derived carbon fluxes for retrospective and near real-time assimilation systems." Atmospheric Chemistry and Physics (Submitted) [10.5194/acp-2020-496]

                                                                                                                                                                                            
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