start:hype_model_description:hype_np_riv_lake
Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision | Next revision Both sides next revision | ||
|
start:hype_model_description:hype_np_riv_lake [2020/04/30 09:11] cpers [Primary production and mineralization] |
start:hype_model_description:hype_np_riv_lake [2020/04/30 09:12] cpers [Macrophyte uptake] |
||
|---|---|---|---|
| Line 197: | Line 197: | ||
| =====Macrophyte uptake===== | =====Macrophyte uptake===== | ||
| - | For shallow waters in lakes macrophytes can grow and take up inorganic nutrients (IN and SP). The nutrients are lost to the model. Macrophyte uptake are controlled by a temperature function (//tmpfcn//) and a concentration function (//TPfcn//) for total phosphorus. The temperature function is composed of two parts; one exponential and one dependent on the water temperature (//Tw//) above the average temperature of the last twenty days (//T20//). The concentration function is the same half-saturation function as for production and mineralisation [[http://www.smhi.net/hype/wiki/doku.php?id=start:hype_model_description:hype_np_riv_lake#primary_production_and_mineralization|above]]. | + | For shallow waters in lakes macrophytes can grow and take up inorganic nutrients (IN and SP). The nutrients are lost to the model. Macrophyte uptake are controlled by a temperature function (//tmpfcn//) and a concentration function (//TPfcn//) for total phosphorus. The temperature function is composed of two parts; one exponential and one dependent on the water temperature (//Tw//) above the average temperature of the last twenty days (//T20//). The concentration function is the same half-saturation function as for production and mineralisation [[start:hype_model_description:hype_np_riv_lake#primary_production_and_mineralization|above]]. |
| <m> tmpfcn = (Tw/20)^0.3 * (Tw-T20)/5, Tw>0 and tempfcn>0 </m> | <m> tmpfcn = (Tw/20)^0.3 * (Tw-T20)/5, Tw>0 and tempfcn>0 </m> | ||
| Line 209: | Line 209: | ||
| <m> upt = uptpar * tmpfcn * TPfcn * fracarea </m> | <m> upt = uptpar * tmpfcn * TPfcn * fracarea </m> | ||
| - | The uptake rate parameters (//uptpar//), different for IN and SP, are general (//muptn, muptp//). The process is similar to the [[http://www.smhi.net/hype/wiki/doku.php?id=start:hype_model_description:hype_human_water#wetland_nutrient_processes1|modelled macrophyte uptake in wetlands]]. | + | The uptake rate parameters (//uptpar//), different for IN and SP, are general (//muptn, muptp//). The process is similar to the [[start:hype_model_description:hype_human_water#wetland_nutrient_processes1|modelled macrophyte uptake in wetlands]]. |
| ==== Links to file reference ==== | ==== Links to file reference ==== | ||
start/hype_model_description/hype_np_riv_lake.txt ยท Last modified: 2024/01/25 11:37 (external edit)
Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Share Alike 4.0 International
