start:hype_tutorials:updating
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start:hype_tutorials:updating [2021/04/09 08:14] cpers [AR – updating of discharge (qar)] |
start:hype_tutorials:updating [2024/01/25 11:37] (current) |
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| =====Updating of lake water stage (wendupd)===== | =====Updating of lake water stage (wendupd)===== | ||
| - | To use lake water updating set ''update wendupd wstr'' in [[start:HYPE_file_reference:info.txt|info.txt]]. Subbasins chosen for updating are given in the file [[start:HYPE_file_reference:update.txt|update.txt]]. Recorded values (''wstr'') are given in [[start:HYPE_file_reference:Xobs.txt|Xobs.txt]]. | + | To use lake water updating set ''update wendupd wstr'' in [[start:HYPE_file_reference:info.txt|info.txt]]. Subbasins chosen for updating are given in the file [[start:HYPE_file_reference:update.txt|update.txt]]. Recorded values (''wstr'') are given in [[start:HYPE_file_reference:Xobs.txt|Xobs.txt]] or for later versions alternatively in [[start:HYPE_file_reference:Wobs.txt|Wobs.txt]]. |
| The updating method replaces modeled water stage of outlet lake with water stage when available. The recorded waterstage of a regulated dam is adjusted according to the regulation amplitude (''wamp'' in [[start:HYPE_file_reference:lakedata.txt|LakeData.txt]] and [[start:HYPE_file_reference:damdata.txt|DamData.txt]]) before being used on the simulated waterstage. If //Wm// = modelled waterstage and //Wr// = recorded waterstage, then for timesteps with observations (//Wr//<>-9999): | The updating method replaces modeled water stage of outlet lake with water stage when available. The recorded waterstage of a regulated dam is adjusted according to the regulation amplitude (''wamp'' in [[start:HYPE_file_reference:lakedata.txt|LakeData.txt]] and [[start:HYPE_file_reference:damdata.txt|DamData.txt]]) before being used on the simulated waterstage. If //Wm// = modelled waterstage and //Wr// = recorded waterstage, then for timesteps with observations (//Wr//<>-9999): | ||
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| =====AR - updating of lake water stage for discharge (warupd)===== | =====AR - updating of lake water stage for discharge (warupd)===== | ||
| - | To update discharge with AR used on lake water stage set ''update warupd wstr'' in [[start:HYPE_file_reference:info.txt|info.txt]]. Subbasins chosen for updating are given in the file [[start:HYPE_file_reference:update.txt|update.txt]]. Recorded values (''wstr'') are given in [[start:HYPE_file_reference:Xobs.txt|Xobs.txt]]. | + | To update discharge with AR used on lake water stage set ''update warupd wstr'' in [[start:HYPE_file_reference:info.txt|info.txt]]. Subbasins chosen for updating are given in the file [[start:HYPE_file_reference:update.txt|update.txt]]. Recorded values (''wstr'') are given in [[start:HYPE_file_reference:Xobs.txt|Xobs.txt]] or for later versions alternatively in [[start:HYPE_file_reference:Wobs.txt|Wobs.txt]]. |
| This method cannot be used in combination with updating methods ''qar'' or ''wendupd''. This method cannot be used for regulated lakes. | This method cannot be used in combination with updating methods ''qar'' or ''wendupd''. This method cannot be used for regulated lakes. | ||
| - | The updating method applies AR-updating on error of water stage in outlet lake. The output variable for water stage is updated with the current AR-changed error or a saved AR-change. Let t0 be a timestep with an observation followed by timesteps(t+n) without any observations. Let //AR// be the AR-factor (usually 0-1) set by user, //Wm// = modelled water stage and //Wr// = recorded water stage. Err is the calculated error on the last timestep with observation, then the updated discharge (//War//) is: | + | The updating method applies AR-updating on error of water stage in outlet lake. The output variable for water stage is updated with the current error or with the updated AR-change. Let t0 be a timestep with an observation followed by timesteps(t+n) without any observations. Let //AR// be the AR-factor (usually 0-1) set by user, //Wm// = modelled water stage and //Wr// = recorded water stage. Err is the calculated error on the last timestep with observation, then the updated water stage (//War//) is: |
| <m> Err(t0) = Wm(t0) - Wr(t0) </m> | <m> Err(t0) = Wm(t0) - Wr(t0) </m> | ||
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| The change made in the last timestep is saved for the next timestep and then multiplied with AR again. The change for the last timestep is saved to the statefiles when an output state is asked for. This change is used for continued AR-updating after the model is restarted from the saved state. | The change made in the last timestep is saved for the next timestep and then multiplied with AR again. The change for the last timestep is saved to the statefiles when an output state is asked for. This change is used for continued AR-updating after the model is restarted from the saved state. | ||
| - | The AR-updated water stage is then used to calculate the current discharge. The current discharge is calculated as the mean of the discharge (at the end of) last time step and the discharge (at the end of) current time step with a rating curve. | + | The AR-updated water stage is then used to calculate the current discharge. The current discharge is calculated as the mean of two discharges calculated with a rating curve. The first discharge is calculated from the updated water stage (at the end of) last time step and the second discharge is calculated from the updated water stage (at the end of) current time step. |
| The updating method does not replace the state of modeled water stage of outlet lake with observed water stage. Only the modeled water stage that are printed to file are changed. | The updating method does not replace the state of modeled water stage of outlet lake with observed water stage. Only the modeled water stage that are printed to file are changed. | ||
start/hype_tutorials/updating.1617948877.txt.gz · Last modified: 2023/11/16 14:28 (external edit)
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