Nathaniel Collier Contact 865.241.7550 | COLLIERNO@ORNL.GOV All Publications Enhancing Photosynthesis Simulation Performance in ESMs with Machine Learning-Assisted Solvers Perspectives on Artificial Intelligence for Predictions in Ecohydrology Quantifying Carbon Cycle Extremes and Attributing Their Causes Under Climate and Land Use and Land Cover Change From 1850 to ... Automated Integration of Continental-Scale Observations in Near-Real Time for Simulation and Analysis of Biosphere–Atmosphere Interactions Land Model Testbed: Accelerating Development, Benchmarking and Analysis of Land Surface Models The DOE E3SM v1.1 Biogeochemistry Configuration: Description and Simulated Ecosystem‐Climate Responses to Historical Changes in Forcing The Community Land Model Version 5: Description of New Features, Benchmarking, and Impact of Forcing Uncertainty Model Structure and Climate Data Uncertainty in Historical Simulations of the Terrestrial Carbon Cycle (1850–2014) Representing Nitrogen, Phosphorus, and Carbon Interactions in the E3SM Land Model: Development and Global Benchmarking Representing Nitrogen, Phosphorus, and Carbon Interactions in the E3SM Land Model: Development and Global Benchmarking Detecting outliers in streaming time series data from ARM distributed sensors The International Land Model Benchmarking (ILAMB) System: Design, Theory, and Implementation Evaluating Uncertainties in Marine Biogeochemical Models: Benchmarking Aerosol Precursors PyFly: A fast, portable aerodynamics simulator Groundwater flow and heat transport for systems undergoing freeze-thaw: Intercomparison of numerical simulators for 2D test cases An energy-stable time-integrator for phase-field models The value of continuity: Refined isogeometric analysis and fast direct solvers A scalable block-preconditioning strategy for divergence-conforming B-spline discretizations of the Stokes problem PetIGA-MF: A multi-field high-performance toolbox for structure-preserving B-splines spaces Modeling the spatio-temporal variability in subsurface thermal regimes across a low-relief polygonal tundra landscape PetIGA: A framework for high-performance isogeometric analysis, Computer Methods in Applied Mechanics and Engineering The value of continuity: Refined isogeometric analysis and fast direct solvers... Understanding the Representativeness of FLUXNET for Upscaling Carbon Flux from Eddy Covariance Measurements... Coupling a Reactive Transport Code with a Global Land Surface Model for Mechanistic Biogeochemistry Representation: 1. Addressing the Challenge of Nonnegativity A continuation multilevel Monte Carlo algorithm... Key Links Organizations Computing and Computational Sciences Directorate Computational Sciences and Engineering Division Advanced Computing Methods for Physical Sciences Section Computational Earth Sciences Group
