The Role of Process Description in the Simulation of Hydrology at the Watershed Scale
Abstract
The Gridded Surface Subsurface Hydrologic (GSSHA) model is a physics based watershed model that allows the user to select which processes are simulated, as well as how those processes are simulated, such that the user can select the processes and solutions that best match their needs in terms of project requirements and the availability of data to populate parameter sets. The GSSHA model is routinely applied for a variety of projects for a variety of purposes. This broad range of applications provides a large set of potential examples of modeling approaches, solutions, and outcomes. In this presentation, a number of examples will be presented where varying approaches and representation of processes are applied in the simulation of common hydrologic features, such as snow melt and runoff, infiltration, overland flow, and the simulation of subsurface drainage features. The examples highlight the various approaches and process descriptions, as well as illustrate how the simulation of different processes utilizing different approaches can affect the results of the simulations, with some commentary on the appropriateness of certain methods for certain purposes.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2017
- Bibcode:
- 2017AGUFM.H54D..03D
- Keywords:
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- 0414 Biogeochemical cycles;
- processes;
- and modeling;
- BIOGEOSCIENCES;
- 0430 Computational methods and data processing;
- BIOGEOSCIENCES;
- 1847 Modeling;
- HYDROLOGY;
- 1873 Uncertainty assessment;
- HYDROLOGY