start:hype_model_description:hype_tracer
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start:hype_model_description:hype_tracer [2020/04/30 10:57] cpers [Table] |
start:hype_model_description:hype_tracer [2024/01/25 11:37] (current) |
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| |Simulated amount T1 in or above soil (//aT11//, //aT12//, //aT13//, //sT11//, //sT12//, //sT13//, //T1sf//)|U/km2|kg/km2|#/km2| | |Simulated amount T1 in or above soil (//aT11//, //aT12//, //aT13//, //sT11//, //sT12//, //sT13//, //T1sf//)|U/km2|kg/km2|#/km2| | ||
| |Simulated amount T1 in river sediment (//Tsmr//, //Tslr//)|U|kg|#| | |Simulated amount T1 in river sediment (//Tsmr//, //Tslr//)|U|kg|#| | ||
| + | |Simulated sedimenting amount T1 in outlet lake (//ola1//)|U|kg|#| | ||
| |Simulated concentration of water (//coT1//, //ceT1//, //csT1//, //ccT1//, //clT1//, //Tcr1//, //Tcr2//, //Tcr3//, //Tcrd//, //Tcrs//)|mU/m3 or µU/L|mg/L|thousandth part/m3 or millionth part/L| | |Simulated concentration of water (//coT1//, //ceT1//, //csT1//, //ccT1//, //clT1//, //Tcr1//, //Tcr2//, //Tcr3//, //Tcrd//, //Tcrs//)|mU/m3 or µU/L|mg/L|thousandth part/m3 or millionth part/L| | ||
| |Observed concentration (//reT1//)|mU/m3 or µU/L|mg/L|thousandth part/m3 or millionth part/L| | |Observed concentration (//reT1//)|mU/m3 or µU/L|mg/L|thousandth part/m3 or millionth part/L| | ||
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| 2) Point sources may be a source of T1 to surface waters. Point sources of tracer T1 can be added to the local stream, the local lake, the main river or the outlet lake. | 2) Point sources may be a source of T1 to surface waters. Point sources of tracer T1 can be added to the local stream, the local lake, the main river or the outlet lake. | ||
| - | 3) A pool laid down on land can be a source of the tracer. The pool is defined similar to the manure for nutrients (//t1amount//). It can be added at a specific point in time or equally distributed over a period of time. The pool may be tilled down into the top soil layers also in similar fashion as manure. | + | 3) A pool laid down on land can be a source of the tracer. This source (//tamount//) is a bit similar to the handling of the source of manure for nutrients. It can be added at a specific point in time or equally distributed over a period of time. Part of the pool may be tilled down into the top soil layer or the top two layers. |
| 4) The tracer can be introduced to HYPE in the form of typical concentrations for leakage from different land-uses and/or soil types. The concentration of the runoff from a class (//conc//) is calculated as the product of two model parameters: | 4) The tracer can be introduced to HYPE in the form of typical concentrations for leakage from different land-uses and/or soil types. The concentration of the runoff from a class (//conc//) is calculated as the product of two model parameters: | ||
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| === Release from above ground storage === | === Release from above ground storage === | ||
| - | T1 can be released from a storage above ground (e.g. manure) by rain and snowmelt (flow //q// (mm/day)). The released tracer will follow the flow, as a concentration, and depending on the fate of the flow, the tracer may follow surface runoff, infiltration or other path ways. The release is goverened by the model parameter //t1rel// (1/mm). A fraction (<m>a_rel</m>) of the total amount of tracer in the store above ground is released and follows the flow according to equation: | + | T1 is released from the storage above ground (e.g. manure) by rain and snowmelt (flow //q// (mm/day)). The release is goverened by the model parameter //t1rel// (1/mm). A fraction (<m>a_rel</m>) of the total amount of tracer in the store above ground is released according to equation: |
| <m> a_rel = 1-e^{-t1rel*q} </m> | <m> a_rel = 1-e^{-t1rel*q} </m> | ||
| + | |||
| + | The released tracer will follow the surface flow or the infiltration flow. If there is surface flow (saturated overland flow or infiltration excess surface flow) a part will follow that flow as a concentration. If there is infiltration, a part will infiltrate into the top soil layer where it will be adsorbed. The division is determined by the relative sizes of surface flow and tinfiltration flow. | ||
| === Exponential decay === | === Exponential decay === | ||
| - | Patogens grow and die over time. To simulate this, HYPE supplies a process for the combined effect as an exponential decay. The process is goverened by the model paramater //t1expdec//, which denote the halv life time of the tracer in days. Exponential decay is applied to tracer T1 in most forms; in soil water, river, lakes, the above ground storage, tracers adsorbed to soil and tracers in river sediment. | + | Patogens grow and die over time. To simulate this, HYPE supplies a process for the combined effect as an exponential decay. The process is goverened by the model paramater //t1expdec//, which denote the half-life of the tracer in days. Exponential decay is applied to tracer T1 in most forms; in soil water, river, lakes, the above ground storage, tracers adsorbed to soil and tracers in river sediment. |
| === Adsorption/desorption === | === Adsorption/desorption === | ||
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| === Sedimentation/resuspension in river === | === Sedimentation/resuspension in river === | ||
| - | Sedimentation or resuspension of tracers in rivers is calculated the same way as particulate phosphorus (described [[start:hype_model_description:hype_np_riv_lake#sedimentation_resuspension|here]]). The process depends on the current flow (//q//) in the river in relation to bankful flow (<m>q_bank</m>) and the general model parameter //t1sedexp//. Bankful flow is the flow when the river is filled to the brim. This flow is calculated as the second largest simulated flow in the last year. The fraction of the tracer that is resuspended or sedimented is determined by the equation: | + | Sedimentation or resuspension of tracers in rivers is calculated the same way as particulate phosphorus (described [[start:hype_model_description:hype_np_riv_lake#sedimentation_resuspension|here]]) and suspended sediments (described [[start:hype_model_description:hype_sediment#sedimentation_resuspension_in_rivers|here]]). There are two alternative models. For the original the process depends on the current flow (//q//) in the river in relation to an reduced bankful flow (<m>q_bank</m>) and the general model parameter //t1sedexp//. Bankful flow is the flow when the river is filled to the brim. This flow is calculated as the second largest simulated flow in the last year. It has been adjusted with the value 0.7 or by the parameter //qbank//. The fraction of the tracer that is resuspended or sedimented is determined by the equation: |
| <m> a_sres=max(-1.,min(1.,{{q_bank-q}/q_bank}^{t1sedexp}-{q/q_bank}^{t1sedexp})) </m> | <m> a_sres=max(-1.,min(1.,{{q_bank-q}/q_bank}^{t1sedexp}-{q/q_bank}^{t1sedexp})) </m> | ||
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| where <m>c_river</m> is the concentration of T1 in river (U/m3), <m>v_river</m> is the volume of river (m3), and //Ased// is amount of tracer T1 in the sediment (U). | where <m>c_river</m> is the concentration of T1 in river (U/m3), <m>v_river</m> is the volume of river (m3), and //Ased// is amount of tracer T1 in the sediment (U). | ||
| + | |||
| + | An alternative model is the Bagnold equation (see sediment). The tracer sedimentation/resuspension with this model uses T1 specific parameters to calculate the maximum suspended T1 concentration in the river, general parameters //suspconT1// and //suspexpT1//. | ||
| === Sedimentation in lakes === | === Sedimentation in lakes === | ||
| Line 87: | Line 92: | ||
| |Sources| |//cpt1//|[[start:hype_file_reference:xobs.txt|Xobs.txt]]| | |Sources| |//cpt1//|[[start:hype_file_reference:xobs.txt|Xobs.txt]]| | ||
| |:::| |//ps_t1//|[[start:hype_file_reference:pointsourcedata.txt|PointSourceData.txt]]| | |:::| |//ps_t1//|[[start:hype_file_reference:pointsourcedata.txt|PointSourceData.txt]]| | ||
| - | |:::| |//t1amount//|[[start:hype_file_reference:cropdata.txt|CropData.txt]]| | + | |:::| |//tamount//|[[start:hype_file_reference:cropdata.txt|CropData.txt]]| |
| |:::|//t1leakluse, t1leaksoil//|//t1leakluse, t1leaksoil//|[[start:hype_file_reference:par.txt|par.txt]]| | |:::|//t1leakluse, t1leaksoil//|//t1leakluse, t1leaksoil//|[[start:hype_file_reference:par.txt|par.txt]]| | ||
| |Processes|//t1rel, t1sedexp, t1freuc//|//t1rel, t1sedexp, t1freuc//|[[start:hype_file_reference:par.txt|par.txt]]| | |Processes|//t1rel, t1sedexp, t1freuc//|//t1rel, t1sedexp, t1freuc//|[[start:hype_file_reference:par.txt|par.txt]]| | ||
| - | |:::| |//t1evap, t1expdec, t1sedvel//|:::| | + | |:::| |//t1evap, t1expdec, t1sedvel, qbank, suspcont1, suspexpt1//|:::| |
| |:::|//d//| |[[start:hype_file_reference:geoclass.txt|GeoClass.txt]]| | |:::|//d//| |[[start:hype_file_reference:geoclass.txt|GeoClass.txt]]| | ||
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| ^Modules (file) ^Procedures ^ | ^Modules (file) ^Procedures ^ | ||
| - | |[[http://hype.sourceforge.net/doxy-html/classtracer__processes.html|tracer_processes (t_proc.f90)]]|add_tracer_point_source_to_river| | + | |[[http://hype.sourceforge.net/doxy-html/namespacetracer__processes.html|tracer_processes (t_proc.f90)]]|add_tracer_point_source_to_river| |
| | ::: |add_tracer_point_source_to_lake| | | ::: |add_tracer_point_source_to_lake| | ||
| | ::: |soil_tracer_processes| | | ::: |soil_tracer_processes| | ||
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| <m> dH_i/dt=-p_mt * T_a </m> | <m> dH_i/dt=-p_mt * T_a </m> | ||
| - | Ice can in addition be melted internally by radiation, but only if the air temperature is above zero. | + | Ice can in addition be melted internally by radiation. |
| <m> dH_i/dt=-{p_mr *100} / {L_f * rho_i} </m> | <m> dH_i/dt=-{p_mr *100} / {L_f * rho_i} </m> | ||
| Line 224: | Line 229: | ||
| ==== Surface water processes ==== | ==== Surface water processes ==== | ||
| - | Temperature T2 of a river is not affected by irrigation withdrawal, abstractions, rural households or point source additions, constructed wetlands, or water returning from aquifers. | + | === River model option === |
| + | |||
| + | As default, temperature of the main river flow is affected by the temperature of water added to the river. Temperature T2 of a river is not affected by point sources which not have T2 (''ps_t2'') set in PointSourceData though. In this case the recieving main river flow will keep the temperature it had before adding of the point sources. | ||
| + | |||
| + | In earlier HYPE versions, the temperature of the river was not affected by irrigation withdrawal, abstractions, rural households or point source additions, constructed wetlands, or water returning from aquifers. To get this older function of T2 in HYPE, there is a modeloption that can be set (modeloption rivert2model 1). | ||
| === Lake basic assumptions === | === Lake basic assumptions === | ||
| Line 311: | Line 321: | ||
| ^Modules (file) ^Procedures ^Section^ | ^Modules (file) ^Procedures ^Section^ | ||
| - | |[[http://hype.sourceforge.net/doxy-html/classtracer__processes.html|tracer_processes (t_proc.f90)]]|add_tracer_point_source_to_river|point source| | + | |[[http://hype.sourceforge.net/doxy-html/namespacetracer__processes.html|tracer_processes (t_proc.f90)]]|add_tracer_point_source_to_river|point source| |
| | ::: |add_tracer_point_source_to_lake| ::: | | | ::: |add_tracer_point_source_to_lake| ::: | | ||
| - | |[[http://hype.sourceforge.net/doxy-html/classnpc_surfacewater__processes.html|npc_surfacewater_processes (npc_sw_proc.f90)]]|add_point_sources_to_main_river| ::: | | + | |[[http://hype.sourceforge.net/doxy-html/namespacenpc__surfacewater__processes.html|npc_surfacewater_processes (npc_sw_proc.f90)]]|add_point_sources_to_main_river| ::: | |
| - | |[[http://hype.sourceforge.net/doxy-html/classnpc_soil__processes.html|npc_soil_processes (npc_soil_proc.f90)]]|set_class_precipitation_concentration_and_load|precipitation| | + | |[[http://hype.sourceforge.net/doxy-html/namespacenpc__soil__processes.html|npc_soil_processes (npc_soil_proc.f90)]]|set_class_precipitation_concentration_and_load|precipitation| |
| - | |[[http://hype.sourceforge.net/doxy-html/classsurfacewater__processes.html|surfacewater_processes (sw_proc.f90)]]|add_T2_concentration_in_precipitation_on_water|:::| | + | |[[http://hype.sourceforge.net/doxy-html/namespacesurfacewater__processes.html|surfacewater_processes (sw_proc.f90)]]|add_T2_concentration_in_precipitation_on_water|:::| |
| | ::: |calculate_river_evaporation|evaporation| | | ::: |calculate_river_evaporation|evaporation| | ||
| | ::: |calculate_lake_epilimnion_depth|lake basic assumptions| | | ::: |calculate_lake_epilimnion_depth|lake basic assumptions| | ||
| Line 328: | Line 338: | ||
| |:::|riverice_riverwater_interaction|:::| | |:::|riverice_riverwater_interaction|:::| | ||
| |:::|calculate_lakeice_lakewater_interaction|:::| | |:::|calculate_lakeice_lakewater_interaction|:::| | ||
| - | |[[http://hype.sourceforge.net/doxy-html/classsoil__processes.html|soil_processes (soil_proc.f90)]]|calculate_snowmelt|:::| | + | |[[http://hype.sourceforge.net/doxy-html/namespacesoil__processes.html|soil_processes (soil_proc.f90)]]|calculate_snowmelt|:::| |
| |:::|calculate_snowdepth|:::| | |:::|calculate_snowdepth|:::| | ||
| |:::|calculate_snow|sources| | |:::|calculate_snow|sources| | ||
| - | |[[http://hype.sourceforge.net/doxy-html/classregional__groundwater.html|regional_groundwater (regional_groundwater.f90)]]|initiate_aquifer_state|| | + | |[[http://hype.sourceforge.net/doxy-html/namespaceregional__groundwater__module.html|regional_groundwater (regional_groundwater.f90)]]|initiate_aquifer_state|| |
| - | |[[http://hype.sourceforge.net/doxy-html/classsoilmodel__default.html|soilmodel_default (soilmodel0.f90)]]|soilmodel_0|soil temperature and runoff| | + | |[[http://hype.sourceforge.net/doxy-html/namespacesoilmodel__default.html|soilmodel_default (soilmodel0.f90)]]|soilmodel_0|soil temperature and runoff| |
| - | |[[http://hype.sourceforge.net/doxy-html/classglacier__soilmodel.html|glacier_soilmodel (glacier_soilmodel.f90)]]|soilmodel_3| ::: | | + | |[[http://hype.sourceforge.net/doxy-html/namespaceglacier__soilmodel.html|glacier_soilmodel (glacier_soilmodel.f90)]]|soilmodel_3| ::: | |
| - | |[[http://hype.sourceforge.net/doxy-html/classfloodplain__soilmodel.html|soilmodel_4 (soilmodel4.f90)]]|soilmodel_4| ::: | | + | |[[http://hype.sourceforge.net/doxy-html/namespacefloodplain__soilmodel.html|soilmodel_4 (soilmodel4.f90)]]|soilmodel_4| ::: | |
start/hype_model_description/hype_tracer.1588237052.txt.gz · Last modified: 2023/11/16 14:28 (external edit)
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