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start:hype_model_description:hype_orgc [2018/10/11 14:26] cpers [Riparian zone] |
start:hype_model_description:hype_orgc [2018/10/12 14:03] cpers [Links to file reference] |
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- | Primary production is a source of organic carbon in rivers and lakes, while mineralization is a sink. Primary production and mineralization is calculated the same way as for nitrogen, but with its own calibration parameter (//wprodc//). The potential carbon transformation (//minprodCpot//, kg / day) is proportional to the potential nitrogen transformation (//minprodNpot//, see [[start:hype_model_description:hype_np_riv_lake#primary_production_and_mineralization|NP section]]) with a transformation rate that depends on the carbon-nitrogen ratio (//NCratio// = 5.7). The calculated mineralization of organic carbon is limited to a maximum of 50% of the available OC pool. If phosphorus is not modelled a long-term average total phosphorus concentration as a lake region dependent parameter (//tpmean//) is used. If set, the long-term average concentration is reduced by the general parameter //limsedPP// before using it in the concentration function. | + | Primary production is a source of organic carbon in rivers and lakes, while mineralization is a sink. Primary production and mineralization is calculated the same way as for nitrogen, but with its own calibration parameter (//wprodc//). The equations are repeated below. The production/mineralization depend on temperature and total phosphorus and lake area (//area//). The potential carbon transformation (//minprodCpot//, kg / day) is proportional to the potential nitrogen transformation (//minprodNpot//, see also [[start:hype_model_description:hype_np_riv_lake#primary_production_and_mineralization|NP section]]) with a transformation rate that depends on the carbon-nitrogen ratio (//NCratio// = 5.7). The calculated mineralization of organic carbon is limited to a maximum of 50% of the available OC pool. If phosphorus is not modelled a long-term average total phosphorus concentration as a lake region dependent parameter (//tpmean//) is used. If set, the long-term average concentration is reduced by the general parameter //limsedPP// before using it in the concentration function thus reducing the production/mineralisation of OC. |
<m> tmpfcn1 = watertemp / 20. </m> | <m> tmpfcn1 = watertemp / 20. </m> | ||
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==== Sedimentation ==== | ==== Sedimentation ==== | ||
- | Sedimentation in lakes is a sink for OC and works the same way as for organic nitrogen and particulate phosphorus. Sedimentation (//sedOC//, //kg/day//) is calculated as a function of water concentration and lake area (//area//). The parameter //sedoc// is general or can be specified for each lake. | + | Sedimentation in lakes is a sink for OC and works the same way as for organic nitrogen and particulate phosphorus. Sedimentation (//sedOC//, //kg/day//) is calculated as a function of OC concentration in lake water (//conc//)) and lake area (//area//). The settling velocity parameter //sedoc// is general or can be specified for each lake. |
- | <m> sedOC = sedoc * waterconcOC * area </m> | + | <m> sedOC = sedoc * conc * area </m> |
==== Links to relevant procedures in the code ==== | ==== Links to relevant procedures in the code ==== | ||
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|Sources of organic material| |//resc//|[[start:hype_file_reference:cropdata.txt|CropData.txt]]| | |Sources of organic material| |//resc//|[[start:hype_file_reference:cropdata.txt|CropData.txt]]| | ||
|:::| |//litterdays//|[[start:hype_file_reference:par.txt|par.txt]]| | |:::| |//litterdays//|[[start:hype_file_reference:par.txt|par.txt]]| | ||
- | |Soil processes| |//humusc1//, //humusc2//, //humusc3//, //fastc1//, //fastc2//, //fastc3//|[[start:hype_file_reference:par.txt|par.txt]]| | + | |Soil processes| |//humusc1, humusc2, humusc3, fastc1, fastc2, fastc3, koflim//|[[start:hype_file_reference:par.txt|par.txt]]| |
|:::|<m>theta_low</m> |//ocsoilslp// or 0.08|:::| | |:::|<m>theta_low</m> |//ocsoilslp// or 0.08|:::| | ||
|:::|//satact//|//ocsoilsat// or 0.6|:::| | |:::|//satact//|//ocsoilsat// or 0.6|:::| | ||
- | |:::|//minc//, //klh//, //klo//, //kof//, //kho//|//minc//, //klh//, //klo//, //kof//, //kho//|:::| | + | |:::|//minc, klh, klo, kof, kho//|//minc, klh, klo, kof, kho//|:::| |
- | |:::| |//koflim//|:::| | + | |
|:::|//par//|//kcgwreg// or //koc//|:::| | |:::|//par//|//kcgwreg// or //koc//|:::| | ||
|Riparian zone|//elev//|calculated from //mean_elev// and //dhslc_nn//|[[start:hype_file_reference:geodata.txt|GeoData.txt]]| | |Riparian zone|//elev//|calculated from //mean_elev// and //dhslc_nn//|[[start:hype_file_reference:geodata.txt|GeoData.txt]]| |