Module: Water And ecosYstem Simulator(WAYS) original author: Ganquan Mao (ganquan.mao@icloud.com ) basin scale daily
parameters need to be calibrated:
var name
description
range
unit
tt
threshold temperature below which rainfall becomes snowfall
0
℃
fdd
the depth of melt snow per degree above tt per day
(0,5)
mm/(℃*day)
simax
the depth of melt snow per degree above tt per day
(0,10)
mm
ce
evapotranspiration scale parameter
(0.1,0.9)
scalar
beta
runoff shape parameter
(0,2)
scalar
fs
the fraction of runoff that infiltrate into groundwater
(0,0.5)
scalar
rsmax
the maximum of water that can rechareg to groundwater per day
scalar
tagf
the time lag of fast response runoff
(0,5)
day
tlas
the time lag of slow response runoff
(0,5)
day
sftr
the maximum water storage of fast response reservoir
(10,200)
mm
kff
surface runoff coefficient
(1,40)
scalar
kf
interflow coefficient
(1,9)
scalar
ks
baseflow coefficient
100
scalar
crmax
the maximum of water that rised from groundwater into soil
(0, 20)
mm
rzsc
the maximum water storage in root zone
(400,)
mm
data
unit
daily precipitation
mm
daily mean temperature
℃
daily potential evapotranspiration
mm