A unified approach for process‐based hydrologic modeling: 1. Modeling concept

Abstract This work advances a unified approach to process‐based hydrologic modeling to enable controlled and systematic evaluation of multiple model representations (hypotheses) of hydrologic processes and scaling behavior. Our approach, which we term the Structure for Unifying Multiple Modeling Alternatives (SUMMA), formulates a general set of conservation equations, providing the flexibility to experiment with different spatial representations, different flux parameterizations, different model parameter values, and different time stepping schemes. In this paper, we introduce the general approach used in SUMMA, detailing the spatial organization and model simplifications, and how different representations of…

• NS
  National Science Foundation
• SR
  Sight Research UK

  Award: NE/K00882X/1
• NE
  Natural Environment Research Council

  Award: NE/K00882X/1
• UA
  U.S. Army Corps of Engineers