Skip to Main Content
Table 1

Parameters and ranges of values used in the FLEX-Topo model

ParameterRangeDescription
FDD [1,8] Degree day factor defining the melted water per day per Celsius degree above Tt 
Tt [−2.5,2.5] Air temperature threshold above which snow melts 
Pt [5,35] Threshold parameter indicating occurrence of HOF in hydrological upland 
SumaxB [5,500] Maximum soil moisture capacity in the root zone of hydrological upland 
PmaxB [0.1,10] Maximum percolation of hydrological upland 
DB [0,1] Splitter to separate preferential flow from recharge in hydrological upland 
Tlag [0,5] Time lag between storm and fast runoff generation 
KfB [2,50] Timescale of the runoff from fast reservoir in hydrological upland 
ImaxFH [1,10] Daily maximum interception capacity of sunny hillslope 
Ce 0.5 A ratio above which the actual evaporation is equal to potential evaporation 
SumaxFH [100,1,000] Maximum soil moisture capacity in the root zone of sunny hillslope 
βFH [0.1,5] Parameter used to calculate runoff coefficient in sunny hillslope 
[0,1] Parameter separating the generated surface runoff on hydrological upland into the splitter to separate preferential flow from recharge in sunny and shady hillslope 
Kf [2,50] Timescale of the runoff from fast reservoir in sunny and shady hillslope 
ImaxGH [0,10] Daily maximum interception capacity of shady hillslope 
SumaxGH [50,1,000] Maximum soil moisture capacity in the root zone of shady hillslope class 
βGH [0.1,5] Parameter used to calculate runoff coefficient in shady hillslope 
ImaxW [0.1,10] Daily maximum interception capacity of hydrological lowland 
SumaxW [5,1,000] Maximum soil moisture capacity in the root zone of hydrological lowland 
βW [0.1,5] Parameter used to calculate runoff coefficient in hydrological lowland 
KW [1,9] Timescale of runoff from fast reservoir in hydrological lowland 
Ks 90 Timescale of the runoff from slow reservoir 
CRmax [0,5] Parameter indicating a constant amount of capillary rise 
ParameterRangeDescription
FDD [1,8] Degree day factor defining the melted water per day per Celsius degree above Tt 
Tt [−2.5,2.5] Air temperature threshold above which snow melts 
Pt [5,35] Threshold parameter indicating occurrence of HOF in hydrological upland 
SumaxB [5,500] Maximum soil moisture capacity in the root zone of hydrological upland 
PmaxB [0.1,10] Maximum percolation of hydrological upland 
DB [0,1] Splitter to separate preferential flow from recharge in hydrological upland 
Tlag [0,5] Time lag between storm and fast runoff generation 
KfB [2,50] Timescale of the runoff from fast reservoir in hydrological upland 
ImaxFH [1,10] Daily maximum interception capacity of sunny hillslope 
Ce 0.5 A ratio above which the actual evaporation is equal to potential evaporation 
SumaxFH [100,1,000] Maximum soil moisture capacity in the root zone of sunny hillslope 
βFH [0.1,5] Parameter used to calculate runoff coefficient in sunny hillslope 
[0,1] Parameter separating the generated surface runoff on hydrological upland into the splitter to separate preferential flow from recharge in sunny and shady hillslope 
Kf [2,50] Timescale of the runoff from fast reservoir in sunny and shady hillslope 
ImaxGH [0,10] Daily maximum interception capacity of shady hillslope 
SumaxGH [50,1,000] Maximum soil moisture capacity in the root zone of shady hillslope class 
βGH [0.1,5] Parameter used to calculate runoff coefficient in shady hillslope 
ImaxW [0.1,10] Daily maximum interception capacity of hydrological lowland 
SumaxW [5,1,000] Maximum soil moisture capacity in the root zone of hydrological lowland 
βW [0.1,5] Parameter used to calculate runoff coefficient in hydrological lowland 
KW [1,9] Timescale of runoff from fast reservoir in hydrological lowland 
Ks 90 Timescale of the runoff from slow reservoir 
CRmax [0,5] Parameter indicating a constant amount of capillary rise 
Close Modal

or Create an Account

Close Modal
Close Modal