Skip to main content

Official Journal of the Asia Oceania Geosciences Society (AOGS)

Geoscience Letters Cover Image

Table 2 Parameters and parameter range used in sensitivity analysis for streamflow simulation

From: Study on streamflow response to land use change over the upper reaches of Zhanghe Reservoir in the Yangtze River basin

ParameterDescriptionRangeProcess
r_ CN2SCS runoff curve number for moisture condition II− .3 to 0.3Streamflow
v_ ALPHA_BFBase flow alpha factor (days)0 to 1Groundwater
v_ GW_DELAYGroundwater delay times (days)0 to 500Groundwater
v_ GWQMNThreshold depth of water in the shallow aquifer required for return flow to occur(mm)0 to 5000Groundwater
v_ GW_REVAPGroundwater “revap” coefficient0.02 to 0.2Groundwater
v_ SFTMPSnowfall temperature (°C)− 5 to 5Snow
v_ TIMPSnow pack temperature(°C)0 to 1Snow
v_ SURLAGSurface runoff lag time (days)0.05 to 24Streamflow
v_ ESCOSoil evaporation compensation factor0 to 1Evaporation
v_CH_N2Manning coefficient for channel− 0.01 to 0.3Channel
v_CH_K2Effective hydraulic conductivity in main channel alluvium (mm/h)− 0.01 to 500Channel
a_ RCHRG_DPGroundwater recharge to the deep aquifer0 to 1Groundwater
r_ ALPHA_BNKBaseflow alpha factor for bank storage0 to 1Channel
r_ SOL_AWCAvailable water capacity of the soil layer(mm/mm)− 0.3 to 0.3Soil
r_ SOL_BDSoil conductivity(mm/h)− 0.3 to 0.3Soil
r_ SOL_KSaturated hydraulic conductivity of first layer (mm/h)− 0.3 to 0.3Soil
  1. r _: parameter value is multiplied by (1 + a given value); v _: parameter value is replaced by given value; a_: parameter value is added a given value