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start:hype_model_description:hype_np_riv_lake

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start:hype_model_description:hype_np_riv_lake [2020/02/14 11:18]
cpers [Primary production and mineralization]
start:hype_model_description:hype_np_riv_lake [2020/02/14 11:20]
cpers [Primary production and mineralization]
Line 106: Line 106:
 <m> TPfcn = {TP-lim} / {(TP-lim) + hsatTP} </m> <m> TPfcn = {TP-lim} / {(TP-lim) + hsatTP} </m>
  
-For lakes, the process is acting only in lake part SLP, while the processes are active throughout the watercourse volume. The estimated production/​mineralization (//​minprodNpot//,​ kg / day) is the potential transformation,​ and may be limited by the availability of nutrients. Only 50% of the available IN the pool (at the primary production) or 50% of the ON-pool (for mineralization) can be transformed. The potential phosphorus conversion (//​minprodPpot//​) is calculated in the same way, but with its own parameter (//​wprodp//​) and a factor for phosphorus/​nitrogen ratio (//​NPratio//​ = 1/7.2). Similarly, there is a restriction against transforming maximum 50% of the SP and PP pools. The parameters //wprodn// and //wprodp// is generic or can be specified for each lake. The area is equal to lake area for lakes and bottom area for rivers (width multiplied by the length of the watercourse). The water depth (//depth//) is the SLP lake part, and for the river the depth calculated [[start:​hype_model_description:​hype_np_riv_lake#​basic_assumptions|above]].+For lakes, the process is acting only in lake part SLP, while the processes are active throughout the watercourse volume. The estimated production/​mineralization (//​minprodNpot//,​ kg / day) is the potential transformation,​ and may be limited by the availability of nutrients. Only 50% of the available IN the pool (at the primary production) or 50% of the ON-pool (for mineralization) can be transformed. The potential phosphorus conversion (//​minprodPpot//​) is calculated in the same way, but with its own parameter (//​wprodp//​) and a factor for phosphorus/​nitrogen ratio (//​NPratio//​ = 1/7.2). Similarly, there is a restriction against transforming maximum 50% of the SP and PP pools. The parameters //wprodn// and //wprodp// is generic or can be specified for each lake. The area is equal to lake area for lakes and bottom area for rivers (width multiplied by the length of the watercourse, see [[start:​hype_model_description:​hype_np_riv_lake#​basic_assumptions|Basic assumptions]] or if the river is a class, the class' area). The water depth (//depth//) is the SLP lake part, and for the river the depth calculated [[start:​hype_model_description:​hype_np_riv_lake#​basic_assumptions|above]].
  
  
start/hype_model_description/hype_np_riv_lake.txt ยท Last modified: 2020/02/28 11:20 by cpers