Simple interface to the hydromad "leaky bucket" soil moisture model, with accommodation for typical inputs from common soil data and climate sources. Critical points along the water retention curve are specified using volumetric water content (VWC): satiation (saturation), field capacity (typically 1/3 bar suction), and permanent wilting point (typically 15 bar suction).
dailyWB(x, daily.data, id, MS.style = "default", S_0 = 0.5, M = 0, etmult = 1)data.frame, required columns include:
sat: VWC at satiation
fc: VWC at field capacity
pwp: VWC at permanent wilting point
thickness: soil material thickness in cm
a.ss: recession coefficients for subsurface flow from saturated zone, should be > 0 (range: 0-1)
"id"
data.frame, required columns include:
date: Date class representation of dates
PPT: daily total, precipitation in mm
PET: daily total, potential ET in mm
character, name of column in x that is used to identify records
moisture state classification style, see estimateSoilMoistureState
fraction of water storage filled at time = 0 (range: 0-1)
fraction of area covered by deep-rooted vegetation
multiplier for PET
a data.frame
Farmer, D., M. Sivapalan, Farmer, D. (2003). Climate, soil and vegetation controls upon the variability of water balance in temperate and semiarid landscapes: downward approach to water balance analysis. Water Resources Research 39(2), p 1035.
Bai, Y., T. Wagener, P. Reed (2009). A top-down framework for watershed model evaluation and selection under uncertainty. Environmental Modelling and Software 24(8), pp. 901-916.