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Atmospheric Science & Global Change

Staff information

Gautam Bisht

Land System Modeling
Earth Scientist
Pacific Northwest National Laboratory
PO Box 999
MSIN: K9-30
Richland, WA 99352

Research Interests

  • Subsurface hydrologic and thermal processes
  • Land-atmosphere interactions
  • High performance computing

Education and Credentials

  • Ph.D. Environmental Engineering, Massachusetts Institute of Technology, MA
  • M.S. Environmental Engineering, University of Cincinnati, OH
  • BTech. Civil Engineering, Indian Institute of Technology, Kanpur, India

PNNL Publications


  • Hao D., G. Bisht, K. Rittger, E. Bair, C. He, H. Huang, and C. Dang, et al. 2023. "Improving snow albedo modeling in E3SM land model (version 2.0) and assessing its impacts on snow and surface fluxes over the Tibetan Plateau." Geoscientific Model Development 16, no. 1:75-94. PNNL-SA-170799. doi:10.5194/gmd-16-75-2023


  • Fang Y., L. Leung, C.D. Koven, G. Bisht, M. Detto, Y. Cheng, and N.G. McDowell, et al. 2022. "Modeling the topographic influence on aboveground biomass using a coupled model of hillslope hydrology and ecosystem dynamics." Geoscientific Model Development 15, no. 20:7879–7901. PNNL-SA-168572. doi:10.5194/gmd-15-7879-2022
  • Hao D., G. Bisht, M. Huang, P. Ma, T.K. Tesfa, W.L. Lee, and Y. Gu, et al. 2022. "Impacts of Sub-Grid Topographic Representations on Surface Energy Balance and Boundary Conditions in the E3SM Land Model: A Case Study in Sierra Nevada." Journal of Advances in Modeling Earth Systems 14, no. 4:e2021MS002862. PNNL-SA-167225. doi:10.1029/2021MS002862
  • Huang M., P. Ma, N. Chaney, D. Hao, G. Bisht, M. Fowler, and V.E. Larson, et al. 2022. "Representing surface heterogeneity in land–atmosphere coupling in E3SMv1 single-column model over ARM SGP during summertime." Geoscientific Model Development 15, no. 16:6371-6384. PNNL-SA-177124. doi:10.5194/gmd-15-6371-2022
  • Li L., G. Bisht, and L. Leung. 2022. "Spatial heterogeneity effects on land surface modeling of water and energy partitioning." Geoscientific Model Development 15, no. 14:5489–5510. PNNL-SA-174760. doi:10.5194/gmd-15-5489-2022
  • Liao C., T. Zhou, D. Xu, R. Barnes, G. Bisht, H. Li, and Z. Tan, et al. 2022. "Advances in hexagon mesh-based flow direction modeling." Advances in Water Resources 160. PNNL-SA-160344. doi:10.1016/j.advwatres.2021.104099
  • Xu D., G. Bisht, K. Sargsyan, C. Liao, and L. Leung. 2022. "Using a surrogate-assisted Bayesian framework to calibrate the runoff-generation scheme in the Energy Exascale Earth System Model (E3SM) v1." Geoscientific Model Development 15, no. 12:5021-5043. PNNL-SA-174759. doi:10.5194/gmd-15-5021-2022
  • Xu D., G. Bisht, T. Zhou, L. Leung, and M. Pan. 2022. "Development of Land-River Two-Way Hydrologic Coupling for Floodplain Inundation in the Energy Exascale Earth System Model." Journal of Advances in Modeling Earth Systems 14, no. 8:Art. No. e2021MS002772. PNNL-SA-165762. doi:10.1029/2021MS002772


  • Agee E., L. He, G. Bisht, V. Couvreur, P. Shahbaz, F. Meunier, and C. Gough, et al. 2021. "Root lateral interactions drive water uptake patterns under water limitation." Advances in Water Resources 151. PNNL-SA-153788. doi:10.1016/j.advwatres.2021.103896
  • Cheng Y., M. Huang, B. Zhu, G. Bisht, T. Zhou, Y. Liu, and F. Song, et al. 2021. "Validation of the Community Land Model Version 5 over the Contiguous United States (CONUS) using in situ and remote sensing data sets." Journal of Geophysical Research: Atmospheres 126, no. 5:e2020JD033539. PNNL-SA-148629. doi:10.1029/2020JD033539
  • Hao D., G. Bisht, Y. Gu, W. Lee, K.N. Liou, and L. Leung. 2021. "A Parameterization of Sub-grid Topographical Effects on Solar Radiation in the E3SM Land Model (Version 1.0): Implementation and Evaluation over the Tibetan Plateau." Geoscientific Model Development 14, no. 10:6273–6289. PNNL-SA-160129. doi:10.5194/gmd-2021-55
  • Wu R., X. Chen, G.E. Hammond, G. Bisht, X. Song, M. Huang, and G. Niu, et al. 2021. "Coupling Surface Flow with High-performance Subsurface Reactive Flow and Transport Code PFLOTRAN." Environmental Modelling & Software 137. PNNL-SA-156109. doi:10.1016/j.envsoft.2021.104959
  • Zhu B., M. Huang, Y. Cheng, X. Xie, Y. Liu, G. Bisht, and X. Chen. 2021. "Impact of vegetation physiology and phenology on watershed hydrology in a semiarid watershed in the Pacific Northwest in a changing climate." Water Resources Research 57, no. 3:e2020WR028394. PNNL-SA-154491. doi:10.1029/2020WR028394


  • Burrows S.M., M.E. Maltrud, X. Yang, Q. Zhu, N. Jeffery, X. Shi, and D.M. Ricciuto, et al. 2020. "The DOE E3SM v1.1 biogeochemistry configuration: Description and Simulated Ecosystem-Climate Responses to Historical Changes in Forcing." Journal of Advances in Modeling Earth Systems 12, no. 9:e2019MS001766. PNNL-SA-144279. doi:10.1029/2019MS001766
  • Zhu B., M. Huang, Y. Cheng, X. Xie, Y. Liu, X. Zhang, and G. Bisht, et al. 2020. "Effects of irrigation on water, carbon, and nitrogen budgets in a semi-arid watershed in the Pacific Northwest: A modelling study." Journal of Advances in Modeling Earth Systems 12, no. 9:Article No. e2019MS001953. PNNL-SA-149346. doi:10.1029/2019MS001953


  • Lawrence D.M., R.A. Fisher, C.D. Koven, K. Oleson, S.C. Swenson, G. Bonan, and N. Collier, et al. 2019. "The Community Land Model Version 5: Description of New Features, Benchmarking, and Impact of Forcing Uncertainty." Journal of Advances in Modeling Earth Systems 11, no. 12:4245-4287. PNNL-SA-150848. doi:10.1029/2018MS001583

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