Glenn Hammond

  • Program Years: 1999-2003
  • Academic Institution: University of Illinois at Urbana-Champaign
  • Field of Study: Environmental Engineering and Science
  • Academic Advisor: Albert Valocchi
  • Practicum(s):
    Los Alamos National Laboratory (2000)
  • Degree(s):
    Ph.D. Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, 2003
    M.S. Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, 1999
    B.S. Civil and Environmental Engineering, Brigham Young University,

Current Status

  • Status: Computational Geohydrologist, Pacific Northwest National Laboratory
  • Research Area: Multiphase Flow and Multicomponent Biogeochemical Transport, High Performance Computing


Wu, R., X. Chen, G. Hammond, G. Bisht, X. Song, M. Huang, G-Y Niu and T. Ferre (2021) Coupling surface flow with high-performance subsurface reactive flow and transport code PFLOTRAN, Environmental Modelling and Software, doi: 10.1016/j.envsoft.2021.104959.

Chen, X., J.M. Zachara, V.R. Vermuel, G. Hammond, M. Freshley and Y. Fang (2020) Understanding Contaminant Migration Within a Dynamic River Corridor Through Field Experiments and Reactive Transport Modeling, Frontiers in Water, 2, doi:10.3389/frwa.2020.533796.

Song, X., X. Chen, J.M. Zachara, J.D. Gomez-Velez, P. Shuai, H. Ren and G.E. Hammond (2020) River Dynamics Control Transit Distributions and Biogeochemical Reactions in a Dam-Regulated River Corridor, Water Resources Research, 56, doi: 10.1029/2019WR026470.

Fang, Y., X. Chen, J. Gomez-Velez, X. Zhang, Z. Duan, G.E. Hammond, A.E. Goldman, V.A. Garayburu-Caruso and E.B. Graham (2020) A multirate mass transfer model to represent the interaction of multicomponent biogeochemical processes between surface water and hyporheic zones (SWAT-MRMT-R 1.0), Geoscientific Model Development, v13, p3553-3569, doi: 10.5194/gmd-13-3553-2020.

Song, X., X. Chen, M. Ye, Z. Dai, G. Hammond and J.M. Zachara (2019) Delineating Facies Spatial Distribution by Integrating Ensemble Data Assimilation and Indicator Geostatistics with Level-Set Transformation, Water Resources Research, 55, doi: 10.1029/2018WR023262.

Dai, H., X. Chen, M. Ye, X. Song, G. Hammond, B. Hu and J.M. Zachara (2019) Using Bayesian Networks for Sensitivity Analysis of Complex Biogeochemical Models, Water Resources Research, 55, doi: 10.1029/2018WR023589.

Shuai, P., X. Chen, X. Song, G.E. Hammond, J. Zachara, P. Royer, H. Ren, W.A. Perkins, M.C. Richmond and M. Huang (2019) Dam Operations and Subsurface Hydrogeology Control Dynamics of Hydrologic Exchange Flows in a Regulated River Reach, Water Resources Research, 55, doi: 10.1029/2018WR024193.

Bisht, G., W.J. Riley, G.E. Hammond and D.M. Lorenzetti (2018) Development and evaluation of a variably saturated flow model in the global E3SM Land Model (ELM) version 1.0, Geoscientific Model Development, v11, p4085-4102, doi: 10.5194/gmd-11-4085-2018.

Song, X., X. Chen, J. Stegen, G. Hammond, H Song, H. Dai, E. Graham and J.M. Zachara (2018) Drought Conditions Maximize the Impact of High-Frequency Flow Variations on Thermal Regimes and Biogeochemical Function in the Hyporheic Zone, Water Resources Research, doi: 10.1029/2018WR022586.

Bao, J., T. Zhou, M. Huang, W. Perkins, S. Harding, S. Titzler, G. Hammond, H. Ren, P. Thorne, S. Suffield, C. Murray and J. Zachara (2018) Modulating Factors of Hydrologic Exchanges in a Large-Scale River Reach: Insights from Three-Dimensional Computational Fluid Dynamics Simulations, Hydrological Processes, doi: 10.1002/hyp.13266.

Zhou, T., J. Bao, M. Huang, Z. Hou, E. Arntzen, X. Song, S.F. Harding, P.S. Titzler, H. Ren, C.J. Murray, W.A. Perkins, X. Chen, J.C. Stegen, G.E. Hammond, P.D. Thorne and J.M. Zachara (2018) Riverbed Hydrologic Exchange Dynamics in a Large Regulated River Reach, Water Resources Research, 54, 4, doi: 10.1002/2017WR020508.

Bisht, G, M. Huang, T. Zhou, X. Chen, H. Dai, G.E. Hammond, W.J. Riley, J.L. Downs, Y. Liu and J.M. Zachara (2017) Coupling a three-dimensional subsurface flow and transport model with a land surface model to simulate stream-aquifer-land interactions (CP v1.0), Geoscientific Model Development, 10, 4539-4562, doi: 10.5194/gmd-10-4539-2017.

Johnson, T.C., G.E. Hammond and X. Chen (2017) PFLOTRAN-E4D: A parallel open source PFLOTRAN module for simulating time-lapse electrical resistivity data, Computers & Geosciences, v99, p72-80, doi: 10.1016/j.cageo.2016.09.006.

Bartlett, R., I. Demeshko, T. Gamblin, G. Hammond, M. Heroux, J. Johnson, A. Klinvex, X. Li, L. Curfman McInnes, J.D. Moulton, D. Osei-Kuffuor, J. Sarich, B. Smith, J. Willenbring and U. Meier Yang (2017) xSDK Foundations: Toward an Extreme-scale Scientific Software Development Kit, Supercomputing Frontiers and Innovations, v4, n1, doi: 10.14529/jsfi170104.

Trinchero, P., J. Molinero, G. Deissmann, U. Svensson, B. Gylling, H. Ebrahimi, G. Hammond, D. Bosbach, I. Puigdomenech (2016) Implications of grain-scale mineralogical heterogeneity for radionuclide transport in fractured media, Transport in Porous Media, DOI 10.1007/s11242-016-0765-0.

Zachara J., X. Chen, C. Murray and G. Hammond (2016) River stage influences on uranium transport in hydrologically dynamic groundwater-surface water transition zone, Water Resources Research, 52, doi:10.1002/2015WR018009.

Tang, G., F. Yuan, G. Bisht, G.E. Hammond, P.C. Lichtner, J. Kumar, R.T.
Mills, X. Xu, B. Andre, F.M. Hoffman, S.L. Painter and P.E. Thornton (2016) Addressing numerical challenges in introducing reactive transport code into a land surface model: a biogeochemical modeling proof-of-concept with CLM-PFLOTRAN 1.0, Geoscientific Model Development, 9, p927-946, doi:10.5194/gmd-9-927-2016.

Johnson T., R. Versteeg, J. Thomle, G. Hammond, X. Chen and J. Zachara (2015) Four-dimensional electrical conductivity monitoring of stage-driven river instruction: Accounting for water table effects using a transient mesh boundary and conditional inversion constraints, Water Resources Research, 51, doi:10.1002/2014WR016129.

Hammond, G.E., P.C. Lichtner and R.T. Mills (2014) Evaluating the Performance of Parallel Subsurface Simulators: An Illustrative Example with PFLOTRAN, Water Resources Research, 50, doi:10.1002/2012WR013483.

Gardner, W.P., G. Hammond and P. Lichtner (2013) High Performance Simulation of Environmental Tracers in Heterogeneous Domains, Groundwater, doi:10.1111/gwat.12148.

Chen, X., G. Hammond, C. Murray, M. Rockhold, V. Vermeul and J. Zachara (2013) Application of Ensemble-based Data Assimilation Techniques for Aquifer Characterization using Tracer Data at Hanford 300 Area, Water Resources Research, 49, doi:10.1002/2012WR013285.

Keyes, D., L. Curfman McInnes, C. Woodward, W. Gropp, E. Myra, M. Pernice, J. Bell, J. Brown, J. Connors, E. Constantinescu, D. Estep, K. Evans, C. Farhat, A. Hakim, G. Hammond, G. Hansen, J. Hill, T. Isaac, X Jiao, K. Jordan, D. Kaushik, E. Kaxiras, K. Lee, A. Lott, Q. Lu, J. Magerlein, R. Maxwell, M. McCourt, M. Mehl, R. Pawlowski, A. RAndles, D. Reynolds, B. Riviere, T. Scheibe, J. Shadid, B. Sheehan, M. Shephard, A. Siegel, B. Smith, X. Tang, C. Wilson and B. Wohlmuth (2013) Multiphysics Simulations: Challenges and Opportunities, International Journal of High Performance Computing Applications, v27, n1, p4-83, doi: 10.1177/1094342012468181.

Navarre-Sitchler, A., R.M. Maxwell, E.R. Siirila, G.E. Hammond and P.C.
Lichtner (2013) Elucidating geochemical response of shallow heterogeneous aquifers to CO2 leakage using high-performance computing: implications for monitoring CO2 sequestration, Advances in Water Resources, v53, p45-55, doi:10.1016/j.advwatres.2012.10.005.

Chen, X., H. Murakami, M. Hahn, G.E. Hammond, M.L. Rockhold, J.M. Zachara and Y. Rubin (2012) Three-Dimensional Bayesian Geostatistical Aquifer Characterization at the Hanford 300 Area using Tracer Test Data, Water Resources Research, 48, doi:10.1029/2011WR010675.

Hammond, G.E., P.C. Lichtner, C. Lu and R.T. Mills (2012) Chapter: PFLOTRAN: Reactive flow and transport code for use on laptops to leadership-class supercomputers, Ebook: Groundwater Reactive Transport Models, Editors: Zhang F., G.T. Yeh, and J.C. Parker, Bentham Science Publishers, p141-159, eISBN: 978-1-60805-306-3, doi:10.2174/978160805306311201010141.

Lichtner, P.C. and G.E. Hammond (2012) Using High Performance Computing to Understand Roles of Labile and Nonlabile U(VI) on Hanford 300 Area Plume Longevity, Vadose Zone Journal, v11, n2, doi:10.2136/vzj2011.0097.

Hammond, G.E., P.C. Lichtner and M.L. Rockhold (2011) Stochastic Simulation of Uranium Migration at the Hanford 300 Area, Journal of Contaminant Hydrology, v120-121, p115-128, doi:10.1016/j.jconhyd.2010.04.005.

Hammond, G.E. and P.C. Lichtner (2010) Field-Scale Modeling for the Natural Attenuation of Uranium at the Hanford 300 Area using High Performance Computing, Water Resources Research, 46, W09527, doi:10.1029/2009WR008819.

Hammond, G.E., A.J. Valocchi and P.C. Lichtner (2005) Application of Jacobian-free Newton-Krylov with physics-based preconditioning to biogeochemical transport, Advances in Water Resources, v28, n4, p359-376.


Outstanding Student Paper Award, American Geophysical Union Fall 2002 Meeting.