start:hype_model_description:hype_land
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start:hype_model_description:hype_land [2024/01/25 11:37] 127.0.0.1 external edit |
start:hype_model_description:hype_land [2024/02/21 10:05] (current) cpers [Overview of flow paths] |
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| |Figure 5: Illustration of flowpaths in the soil in the HYPE model.| | |Figure 5: Illustration of flowpaths in the soil in the HYPE model.| | ||
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| + | ==== Recharge - discharge model ==== | ||
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| + | In the basic model of HYPE the land classes are calculated in parallell and have no interaction with each other. The recharge - discharge model is a modeloption to introduce a crude representation of flow of water between classes within a subbasin. Some classes are chosen to represent recharge area, and other classes represent discharge area within the subbasin. The glacier class and surface water classes cannot be included in the recharge-discharge model. Another limitation is that the model does not work with classes using rootzone leakage and travel-time soilmodels as recharge or discharge classes. | ||
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| + | In this model a part of the (originally calculated) runoff from the recharge classes are redirected to the discharge classes where it is spread equally over their area. This means that the model is sensitive to the relative fraction of area of recharge and discharge classes in the subbasin. The water is added to the bottom soillayers of the discharge classes and can there cause upwelling of water to above soil layers. The actual runoff of the recharge classes are reduced from the originally calculated value with the part going to the discharge area. The discharge classes will have a larger runoff due to the incoming water. | ||
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| + | The part of the runoff from a recharge class that will go the the discharge class(es) are determined by a fraction given per class, and a maximum catchment area of the discharge classes. The latter is determined by a factor (general parameter //wetdisca//) of the the area of the the discharge classes, a maximum ratio between recharge area and discharge area. | ||
start/hype_model_description/hype_land.txt ยท Last modified: 2024/02/21 10:05 by cpers
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