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start:hype_model_description:hype_tracer [2020/04/30 10:53] cpers [Table] |
start:hype_model_description:hype_tracer [2020/04/30 10:57] cpers [Table] |
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To simulate temperature as the substance T2 the lake is divided in two lake parts, lake temperature in a hypothetical epilimnion and hypolimnion (//uppertemp//, //lowertemp//) is handled in the model. The average temperature of the lake is also a state variable. The size of volumes related to the upper and lower temperatures are determined by the thermocline which is estimated for each outlet lake. | To simulate temperature as the substance T2 the lake is divided in two lake parts, lake temperature in a hypothetical epilimnion and hypolimnion (//uppertemp//, //lowertemp//) is handled in the model. The average temperature of the lake is also a state variable. The size of volumes related to the upper and lower temperatures are determined by the thermocline which is estimated for each outlet lake. | ||
- | | {{:start:hype_model_description:epi_hypo_lake.png?300}} | | + | | {{:start:hype_model_description:epi_hypo_lake.png?400}} | |
- | | Figure 3: Two different divisions of a lake. Left: two parts signifying fast flows (FLP) and slow flows (SLP). Right: epilimnion (EPI) and hypolimnion (HYPO). | | + | | Figure 3: Division of a lake: epilimnion (EPI) and hypolimnion (HYPO). | |
Thermocline depth is estimated from lake area (Hanna, 1990). This average depth is adjusted for current changes by adding precipitation (//prec//) and inflow (//qin//) to the lake, and remove evaporation (//evap//). | Thermocline depth is estimated from lake area (Hanna, 1990). This average depth is adjusted for current changes by adding precipitation (//prec//) and inflow (//qin//) to the lake, and remove evaporation (//evap//). |