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The Spatial Processes in Hydrology (SPHY) model is a hydrological modeling tool that can be used for a wide range of water resource management applications. The methodology used in the SPHY model is described in the following paragraphs:

  • The SPHY model makes extensive use of the PCRaster functionalities
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    .     PCRaster is a free, open-source software package for the development and application of spatiotemporal environmental models
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  • The model has been set up using a high spatial resolution of 30 meters, which is very relevant for supporting decisions on variable-rate irrigation
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  • The SPHY model includes modules for rainfall-runoff processes, cryosphere processes, and evapotranspiration processes
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  • The methodology used in the SPHY model is similar to that used in the Soil and Water Assessment Tool (SWAT) model
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  • The SPHY model can be applied to flexible ranges of spatial scales, such as small-scale farms, medium-scale sub-catchment and catchment, and large-scale regional and global scales
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  • The SPHY model has been applied and tested in various studies, ranging from real-time soil moisture predictions in flat lands to operational reservoir management in mountainous regions
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  • The SPHY model input is not unique, and there is no unique approach to creating SPHY model input. The steps for creating SPHY model input are described in the documentation
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Overall, the SPHY model is a flexible hydrological modeling tool that can be used for a wide range of water resource management applications. The model uses a high spatial resolution and includes modules for various hydrological processes. The methodology used in the SPHY model is similar to that used in the SWAT model, and the model can be applied to different spatial scales. The cited references provide further information on the SPHY model and its methodology.


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