User Tools

Site Tools


start:hype_model_description:hype_human_water

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision
Previous revision
start:hype_model_description:hype_human_water [2019/09/30 10:30]
cpers [Sediment point source]
start:hype_model_description:hype_human_water [2019/11/15 08:53] (current)
cpers [Constructed wetlands with water regulation capability]
Line 44: Line 44:
 ===== Constructed wetlands with water regulation capability ===== ===== Constructed wetlands with water regulation capability =====
  
-The wetlands are simulated as a land class with special functions. If the soil is over saturated the standing water is the water volume of the wetland (//vol//, m3). If the soil is not over saturated, the wetland is dried out. The wetlands area (//area//, m2) is definced ​by the class area, and the depth (//w//) varies with flow. A threshold (//w0//) for the wetland outflow above the soil surface keep water in the wetland. The wetland outflow is determined by a rating curve above this threshold (see also [[start:​hype_model_description:​hype_routing#​common_lake_processes | lake outflow]]). The thresholds can be set by parameters or if parameters are not set it is equal to minus the streamdepth (from GeoClass).+The wetlands are water classes, but simulated as a land class with special functions. If the soil is over saturated the standing water is the water volume of the wetland (//vol//, m3). If the soil is not over saturated, the wetland is dried out. The wetlands area (//area//, m2) is defined ​by the class area, and the depth (//w//) varies with flow. A threshold (//w0//) for the wetland outflow above the soil surface keep water in the wetland. The wetland outflow is determined by a rating curve above this threshold (see also [[start:​hype_model_description:​hype_routing#​common_lake_processes | lake outflow]]). The thresholds can be set by parameters or if parameters are not set it is equal to minus the streamdepth (from GeoClass).
  
 <m> outflow = k*(w-w0) ^ p </m> <m> outflow = k*(w-w0) ^ p </m>
Line 54: Line 54:
 The concentration of the wetland (//conc//) is the concentration of soil water in soil layer 1. While calculating wetland nutrient processes only the nutrients in the water volume of the wetland in considered though. After that the nutrient concentration of the upper soil layer is updated. ​ The concentration of the wetland (//conc//) is the concentration of soil water in soil layer 1. While calculating wetland nutrient processes only the nutrients in the water volume of the wetland in considered though. After that the nutrient concentration of the upper soil layer is updated. ​
  
-Denitrification of inorganic nitrogen in the wetland is modelled as [[start:​hype_model_description:​hype_np_soil#​denitrification | denitrification in the soil water]]. Sedimentation of organic nitrogen, particulate phosphorus and suspended sediments are simulated (//sed//, g/d). Uptake of inorganic nutrients (IN and SP) are modelled as macrophyte uptake. The macrophytes are assumed to cover a part of the wetland area (//​fracarea//​) that is shallower than a production depth (//​proddep//​) assuming the wetland area is decreaseing linear with depth until twice the average depth of the wetland. The macrophytes are assumed to give residuals of equal amount of nutrient back to the sediment (i.e. immobile ​orgnaic ​nutrient pools of soillayer one). The macrophyte uptake process (//upt//, g/d) depends on a rate parameter (//​uptpar//​),​ macrophyte fraction of wetland area, temperature (//​tmpfcn//​) and total phosphorus concentration (//​TPfunc//​). The temperature and TP functions are similar to the ones used by [[start:​hype_model_description:​hype_np_riv_lake#​primary_production_and_mineralization | primary production in lakes]]). The temperature function use 5- and 30-day mean air temperature (//T5, T30//). The half saturation concentration of TP is 0.05 mg/L (//​hsatTP//​). The sedimentation is limited to 99.9% of the substance in the wetland water, while macrophytes are limited to 50% of the dissolved inorganic nutrients. ​+Denitrification of inorganic nitrogen in the wetland is modelled as [[start:​hype_model_description:​hype_np_soil#​denitrification | denitrification in the soil water]]. Sedimentation of organic nitrogen, particulate phosphorus and suspended sediments are simulated (//sed//, g/d). Uptake of inorganic nutrients (IN and SP) are modelled as macrophyte uptake. The macrophytes are assumed to cover a part of the wetland area (//​fracarea//​). The covered fraction is calculated as the part that is shallower than a production depth (//​proddep//​) assuming the wetland area is decreaseing linear with depth until twice the average depth of the wetland. The macrophytes are assumed to give residuals of equal amount of nutrient back to the sediment (i.e. immobile ​organic ​nutrient pools of soillayer one). The macrophyte uptake process (//upt//, g/d) depends on a rate parameter (//​uptpar//​),​ macrophyte fraction of wetland area, temperature (//​tmpfcn//​) and total phosphorus concentration (//​TPfunc//​). The temperature and TP functions are similar to the ones used by [[start:​hype_model_description:​hype_np_riv_lake#​primary_production_and_mineralization | primary production in lakes]]). The temperature function use 5- and 30-day mean air temperature (//T5, T30//). The half saturation concentration of TP is 0.05 mg/L (//​hsatTP//​). The sedimentation is limited to 99.9% of the substance in the wetland water, while macrophytes are limited to 50% of the dissolved inorganic nutrients. ​
  
  
Line 334: Line 334:
 ^Section ^Parameter/​Data ^File ^ ^Section ^Parameter/​Data ^File ^
 |Nutrient point sources|//​subid,​ ps_vol, ps_type, ps_tpconc, ps_tnconc, ps_infrac, ps_spfrac, fromdate, todate//​|[[start:​hype_file_reference:​pointsourcedata.txt|PointSourceData.txt]]| |Nutrient point sources|//​subid,​ ps_vol, ps_type, ps_tpconc, ps_tnconc, ps_infrac, ps_spfrac, fromdate, todate//​|[[start:​hype_file_reference:​pointsourcedata.txt|PointSourceData.txt]]|
 +|Sediment point sources|//​subid,​ ps_vol, ps_type, ps_tsconc, ps_ssfrac, fromdate, todate//​|:::​|
 |Tracer T2 (water temperature) point sources|//​subid,​ ps_vol, ps_type, ps_t2, fromdate, todate//​|:::​| |Tracer T2 (water temperature) point sources|//​subid,​ ps_vol, ps_type, ps_t2, fromdate, todate//​|:::​|
 |Tracer T1 point sources|//​pstype=0//​|:::​| |Tracer T1 point sources|//​pstype=0//​|:::​|
start/hype_model_description/hype_human_water.1569832241.txt.gz ยท Last modified: 2019/09/30 10:30 by cpers