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Table 1

Physical descriptions of the parameters for the XAJ model

ParameterUnitsDescription
WUM mm Areal mean tension water capacity of the upper layer 
WLM mm Areal mean tension water capacity of the lower layer 
WDM mm Areal mean tension water capacity of the deeper layer 
B Exponent of the tension water capacity distribution curve 
C Coefficient of deep evapotranspiration 
IMP Ratio of impervious area 
KC Ratio of potential evapotranspiration to pan evaporation 
SM mm Areal mean free water capacity of the surface soil 
EX Exponent of the free water capacity curve 
KI Outflow coefficients of the free water storage to interflow 
KG Outflow coefficients of the free water storage to groundwater 
CS Recession constant of the surface water storage 
CI Recession constant of the interflow storage 
CG Recession constant of the groundwater storage 
CL Recession constant of the lag and route method 
Lag hour Lag time of the lag and route method 
ParameterUnitsDescription
WUM mm Areal mean tension water capacity of the upper layer 
WLM mm Areal mean tension water capacity of the lower layer 
WDM mm Areal mean tension water capacity of the deeper layer 
B Exponent of the tension water capacity distribution curve 
C Coefficient of deep evapotranspiration 
IMP Ratio of impervious area 
KC Ratio of potential evapotranspiration to pan evaporation 
SM mm Areal mean free water capacity of the surface soil 
EX Exponent of the free water capacity curve 
KI Outflow coefficients of the free water storage to interflow 
KG Outflow coefficients of the free water storage to groundwater 
CS Recession constant of the surface water storage 
CI Recession constant of the interflow storage 
CG Recession constant of the groundwater storage 
CL Recession constant of the lag and route method 
Lag hour Lag time of the lag and route method 
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