A tightly coupled GIS and distributed hydrologic modeling framework

摘要: Distributed, physics-based hydrologic models require spatially explicit specification of parameters related to climate, geology, land-cover, soil, and topography. Extracting these from national geodatabases requires intensive data processing. Furthermore, mapping model mesh elements necessitates development access tools that can handle both spatial temporal datasets. This paper presents an open-source, platform independent, tightly coupled GIS distributed modeling framework, PIHMgis (www.pihm.psu.edu), improve model-data integration. Tight coupling is achieved through the integrated user interface with underlying shared geodata model, which improves flow between processing components. The capability effectiveness framework in providing functionalities for watershed delineation, domain decomposition, parameter assignment, simulation, visualization analyses, demonstrated prototyping a simulation. approach are applicable watersheds varied sizes, offer template future GIS-Model integration efforts. A was developed.PIHMgis uses geospatial dataset setup, execute, analyze simulations.Procedural using model.