start:hype_model_description:hype_routing
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start:hype_model_description:hype_routing [2019/08/28 13:37] cpers [Outlet lake with two outlets] |
start:hype_model_description:hype_routing [2019/12/17 15:48] cpers [Basic assumptions] |
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| An outlet lake can be part of a larger lake. It is then called a lake basin. Lake basins are olakes in nearby subbasins. Outlet lakes that are not lake basins are referred to below as simple outlet lakes. | An outlet lake can be part of a larger lake. It is then called a lake basin. Lake basins are olakes in nearby subbasins. Outlet lakes that are not lake basins are referred to below as simple outlet lakes. | ||
| - | A simple outlet lake has a threshold. The outflow ends if the water level drops below the threshold. Lake mean depth below the threshold is specified in GeoData.txt or LakeData.txt as //lake_depth// in meters. Lake depth can also be set by parameters, i.e general parameter //gldepo// or olake region parameter //olldepth//. The threshold is also the the water level of the lake at the start of a simulation. The current water level is denoted as //wlm// in Fig. 2. For printing, the outlet lake water level (output variable //wcom//) is calculated in meters and you can set a reference level (//w0ref//) in LakeData.txt to get the same height system as any observations of the lake's water level. The lake’s //w0ref// is added to the water level above the threshold. HYPE assumes the lake has vertical sides in the calculations, thus the observed variation may be larger than the simulated variation. It is therefore possible to adjust the output //wcom// for the actual amplitude of the regulation volume (//wamp//). This will make the simulated and recorded water stage comparable below the threshold for a regulated lake. | + | A simple outlet lake has a threshold. The outflow ends if the water level drops below the threshold. Lake mean depth below the threshold is specified in GeoData.txt or LakeData.txt as //lake_depth// in meters. Lake depth can also be set by parameters, i.e general parameter //gldepo// or olake region parameter //olldepth//. The threshold is also the the water level of the lake at the start of a simulation. The current water level is denoted as //wlm// in Fig. 2. For printing, the outlet lake water level (output variable //wcom//) is calculated in meters and you can set a reference level (//w0ref//) in LakeData.txt to get the same height system as any observations of the lake's water level. The lake’s //w0ref// is added to the water level above the threshold. HYPE assumes the lake has vertical sides in the calculations, thus the observed variation may be larger than the simulated variation. It is therefore possible to adjust the output //wcom// (and //wcav//) for the actual amplitude of the regulation volume (//wamp//). This will make the simulated and recorded water stage comparable below the threshold for a regulated lake. |
| |{{:start:hype_model_description:outletlakewithvariables2.png?400|}}| | |{{:start:hype_model_description:outletlakewithvariables2.png?400|}}| | ||
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| ==== Outlet lake with two outlets ==== | ==== Outlet lake with two outlets ==== | ||
| - | An outlet lake that is not part of a lake composed of lakebasins, may have two defined outlets in [[start:hype_file_reference:lakedata.txt|LakeData.txt]]. The outlets can be divided into different outlet types depending on method for determining the outflow. HYPE will define an outlet's type based on variables present in [[start:hype_file_reference:lakedata.txt|LakeData.txt]]. Below the defining (necessary) variables are given for each outlet type. | + | An outlet lake that is not part of a lake composed of lakebasins, may have two defined outlets in [[start:hype_file_reference:lakedata.txt|LakeData.txt]]. The outlets can be divided into different outlet types depending on method for determining the outflow. HYPE will define an outlet's type based on variables present in [[start:hype_file_reference:lakedata.txt|LakeData.txt]]. Below the defining (necessary) variables are given for each outlet type. Note: The threshold (w0ref) is given for first outlet. For the second outlet this variable instead is given relative to the threshold of outlet 1 (i.e usually zero). |
| === Outlet types === | === Outlet types === | ||
start/hype_model_description/hype_routing.txt · Last modified: 2024/01/25 11:37 (external edit)
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