Calibrated sensitive model parameters and their optimal values for the three scenarios (v and r are parameter change qualifiers representing change existing with ‘α’ and multiply existing with ‘1 + α’, respectively)
| Parameter . | Description . | Process . | Lower bound . | Upper bound . | Calibrated value . | ||
|---|---|---|---|---|---|---|---|
| Scenario I . | Scenario II . | Scenario III . | |||||
| v_PLAPS.sub | Precipitation lapse rate (mm H2O/km) | Precipitation | 0 | 500 | 98.2 | 76.5 | 58.3 |
| v_TLAPS.sub | Temperature lapse rate (°C/km) | Temperature | −8 | −4 | −0.05 | −0.05 | −0.05 |
| r_CN2.mgt | Initial Soil Conservation Service (SCS) runoff curve number for moisture condition II | Runoff | −0.4 | 0.4 | 0.25 | 0.19 | 0.06 |
| v_Alpha_Bf.gw | Baseflow alpha factor–baseflow recession constant | Runoff | 0 | 1 | 0.56 | 0.53 | 0.54 |
| v_Gwqmn.gw | Threshold depth of water required for return flow to occur | Groundwater | 0 | 2,000 | 1,050 | 982.7 | 800.23 |
| r_Sol_Z.sol | Soil depth (mm) | Soil | −0.3 | 0.3 | −0.23 | −0.15 | −0.11 |
| v_Esco.bsn | Soil evaporation compensation factor | Evaporation | 0.01 | 1 | 0.31 | 0.29 | 0.4 |
| r_Sol_Awc.sol | Available water capacity of soil layer (mm H2O/mm soil) | Soil | −0.6 | 0.6 | −0.015 | 0.03 | −0.002 |
| v_Revapmn.gw | Threshold depth of water in shallow aquifer for ‘revap’ to occur (mm) | Groundwater | 0 | 300 | 186 | 159.2 | 185.3 |
| v_Ch_K2.rte | Effective hydraulic conductivity in main channel alluvium (mm/h) | Channel | 0 | 250 | 88 | 116.9 | 115.1 |
| v_Gw_Revap.gw | Groundwater ‘revap’ coefficient | Groundwater | 0.02 | 0.2 | 0.073 | 0.14 | 0.09 |
| v_Epco.hru | Plant uptake composition factor | Crop | 0.01 | 1 | 0.56 | 0.5 | 0.49 |
| r_Sol_K | Saturated hydraulic conductivity | Soil | −0.24 | 0.25 | 0.13 | 0.01 | 0.01 |
| v_Gw_Delay | Groundwater delay time (days) | Groundwater | 40 | 450 | 49.3 | 45.14 | 35.67 |
| v_Ch_N2 | Manning's ‘n’ value for the main channel | Runoff | 0.01 | 0.3 | 0.06 | 0.09 | 0.16 |
| Parameter . | Description . | Process . | Lower bound . | Upper bound . | Calibrated value . | ||
|---|---|---|---|---|---|---|---|
| Scenario I . | Scenario II . | Scenario III . | |||||
| v_PLAPS.sub | Precipitation lapse rate (mm H2O/km) | Precipitation | 0 | 500 | 98.2 | 76.5 | 58.3 |
| v_TLAPS.sub | Temperature lapse rate (°C/km) | Temperature | −8 | −4 | −0.05 | −0.05 | −0.05 |
| r_CN2.mgt | Initial Soil Conservation Service (SCS) runoff curve number for moisture condition II | Runoff | −0.4 | 0.4 | 0.25 | 0.19 | 0.06 |
| v_Alpha_Bf.gw | Baseflow alpha factor–baseflow recession constant | Runoff | 0 | 1 | 0.56 | 0.53 | 0.54 |
| v_Gwqmn.gw | Threshold depth of water required for return flow to occur | Groundwater | 0 | 2,000 | 1,050 | 982.7 | 800.23 |
| r_Sol_Z.sol | Soil depth (mm) | Soil | −0.3 | 0.3 | −0.23 | −0.15 | −0.11 |
| v_Esco.bsn | Soil evaporation compensation factor | Evaporation | 0.01 | 1 | 0.31 | 0.29 | 0.4 |
| r_Sol_Awc.sol | Available water capacity of soil layer (mm H2O/mm soil) | Soil | −0.6 | 0.6 | −0.015 | 0.03 | −0.002 |
| v_Revapmn.gw | Threshold depth of water in shallow aquifer for ‘revap’ to occur (mm) | Groundwater | 0 | 300 | 186 | 159.2 | 185.3 |
| v_Ch_K2.rte | Effective hydraulic conductivity in main channel alluvium (mm/h) | Channel | 0 | 250 | 88 | 116.9 | 115.1 |
| v_Gw_Revap.gw | Groundwater ‘revap’ coefficient | Groundwater | 0.02 | 0.2 | 0.073 | 0.14 | 0.09 |
| v_Epco.hru | Plant uptake composition factor | Crop | 0.01 | 1 | 0.56 | 0.5 | 0.49 |
| r_Sol_K | Saturated hydraulic conductivity | Soil | −0.24 | 0.25 | 0.13 | 0.01 | 0.01 |
| v_Gw_Delay | Groundwater delay time (days) | Groundwater | 40 | 450 | 49.3 | 45.14 | 35.67 |
| v_Ch_N2 | Manning's ‘n’ value for the main channel | Runoff | 0.01 | 0.3 | 0.06 | 0.09 | 0.16 |