Director, Earth Systems Science
Director, Earth Systems Science


Dr. David Judi is the Director of the Earth Systems Science Division (ESSD) in the Energy and Environment Directorate (EED) at Pacific Northwest National Laboratory (PNNL). In this role, Dr. Judi leads more than 300 staff who focus on developing scientific basis and understanding of Earth system processes and the development of technologies and engineering solutions to enable energy sustainability, resilience, and security.

Dr. Judi previously was the group leader for Earth System Predictability and Resiliency, interim director of the Joint Global Change Research Institute, group leader of the Hydrology Group, and a senior research engineer in EED and the National Security Directorate (NSD). Dr. Judi has been responsible for strategies to improve capabilities in the broad area of characterizing energy-environment interactions. This includes approaches to identify and evaluate portfolios of decarbonization that meet clean energy, resilience, and equity goals. Dr. Judi’s technical area of expertise is in extreme event modeling and impacts to infrastructure systems, with particular focus on climate change and changes in flood risk and resilience.

Prior to joining PNNL in 2015, Dr. Judi worked at Los Alamos National Laboratory as a research engineer within the area of energy infrastructure analysis. Dr. Judi received his Ph.D., M.S., and B.S. in Civil and Environmental Engineering from the University of Utah.

Disciplines and Skills

  • Climate Change Impacts

  • Computational Modeling

  • Critical Infrastructure

  • Emergency Management

  • Flood Risk

  • Resiliency

  • Surface Water Modeling

  • Water Distribution

  • Water Security


PhD, Civil and Environmental Engineering, 2009

MS, Civil and Environmental Engineering, 2006

BS, Civil and Environmental Engineering, 2004



Daniel W.B., C.G. Roth, X. Li, C.L. Rakowski, T.N. McPherson, and D.R. Judi. 2023. "Extremely Rapid, Lagrangian Modeling of 2D Flooding: A Rivulet-Based Approach." Environmental Modeling & Software 161. PNNL-SA-173778. doi:10.1016/j.envsoft.2023.105630

Wan H., J.J. Yoon, V.A. Srikrishnan, W.B. Daniel, and D.R. Judi. 2023. "Landscape metrics regularly outperform other traditionally-used ancillary datasets in dasymetric mapping of population." Computers, Environment and Urban Systems 99. PNNL-SA-172882. doi:10.1016/j.compenvurbsys.2022.101899


Wan H., J.J. Yoon, V.A. Srikrishnan, W.B. Daniel, and D.R. Judi. 2022. "Population downscaling using high-resolution, temporally-rich U.S. Property Data." Cartography and Geographic Information Science 49, no. 1:18-31. PNNL-SA-162765. doi:10.1080/15230406.2021.1991479


Sun N., M.S. Wigmosta, D.R. Judi, Z. Yang, Z. Xiao, and T. Wang. 2021. "Climatological analysis of tropical cyclone impacts on hydrological extremes in the Mid-Atlantic region of the United States." Environmental Research Letters 16, no. 12:Art. No. 124009. PNNL-SA-162671. doi:10.1088/1748-9326/ac2d6a

Xiao Z., Z. Yang, T. Wang, N. Sun, M.S. Wigmosta, and D.R. Judi. 2021. "Characterizing the Non-linear Interactions Between Tide, Storm Surge, and River Flow in the Delaware Bay Estuary, United States." Frontiers in Marine Science 8. PNNL-SA-162723. doi:10.3389/fmars.2021.715557

Xu W., K. Balaguru, A. August, N. Lalo, N.O. Hodas, M. DeMaria, and D.R. Judi. 2021. "Deep Learning Experiments for Tropical Cyclone Intensity Forecasts." Weather and Forecasting 36, no. 4:1453-1470. PNNL-SA-153486. doi:10.1175/WAF-D-20-0104.1


Li X., G. Zhao, J.W. Nielsen-Gammon, J. Salazar, M.S. Wigmosta, N. Sun, and D.R. Judi, et al. 2020. "Impacts of urbanization, antecedent rainfall event, and cyclone tracks on extreme floods at Houston reservoirs during Hurricane Harvey." Environmental Research Letters 15, no. 12:124012. PNNL-SA-153974. doi:10.1088/1748-9326/abc4ff

Shin S., S. Lee, S.J. Burian, D.R. Judi, and T.N. McPherson. 2020. "Evaluating Resilience of Water Distribution Networks to Operational Failures from Cyber-Physical Attacks." Journal of Environmental Engineering (ASCE) 146, no. 3: Article No.04020003. PNNL-SA-147213. doi:10.1061/(ASCE)EE.1943-7870.0001665


Feng Y., C.L. Rakowski, T.N. McPherson, and D.R. Judi. 2019. "A Partition of the Combined Impacts of Socioeconomic Development and Climate Variation on Economic Risks of Riverine Floods." Journal of Flood Risk Management 12, no. S2: Article No. e12508. PNNL-SA-124320. doi:10.1111/jfr3.12508

Lee S., S. Shin, D.R. Judi, T.N. McPherson, and S.J. Burian. 2019. "Criticality analysis of a water distribution system considering both economic consequences and hydraulic loss using Modern Portfolio Theory." Water 11, no. 6: Article number 1222. PNNL-SA-146055. doi:10.3390/w11061222


Balaguru K., G. Foltz, L. Leung, S.M. Hagos, and D.R. Judi. 2018. "On the use of ocean dynamic temperature for hurricane intensity forecasting." Weather and Forecasting 33, no. 2:411-418. PNNL-SA-129386. doi:10.1175/WAF-D-17-0143.1

Judi D.R., C.L. Rakowski, S.R. Waichler, Y. Feng, and M.S. Wigmosta. 2018. "Integrated Modeling Approach for the Development of Climate-Informed, Actionable Information." Water 10, no. 6: Article No. 775. PNNL-SA-134615. doi:10.3390/w10060775

Lee S., S. Shin, S.J. Burian, D.R. Judi, and T.N. McPherson. 2018. "Detectability-Based Resilience of Water Distribution System Using Failure Fingerprint." In 1st International WDSA / CCWI 2018 Joint Conference, July 23-25, 2018, Kingston, Ontario, Canada, 1, Article No. 178. Ontario:Queen's University. PNNL-SA-137376.

Shin S., S. Lee, D.R. Judi, M. Parvania, E. Goharian, T.N. McPherson, and S.J. Burian. 2018. "A Systematic Review of Quantitative Resilience Measures for Water Infrastructure Systems." Water 10, no. 2: Article No. 164. PNNL-SA-132538. doi:10.3390/w10020164.