• R code of the model is provided in simplemodel.R

  • SWBM set up to compute hydrology at site Payerne
  • sections concerning delayed runoff are commented out
  • the delyed runoff requires an additional parameter and takes more time to compute
  • it is required if daily runoff should be analyzed
  • it is not required if the focus is on soil moisture, ET, or monthly runoff

• R code of to plot simple model output is provided in figures.R

• The model is tested with R Versions >= 2.10

• Meteorological input data file required to run simplemodel.R:

./Data/pay_meteo_1998-2012.txt

• Input data files required to run figures.R:

./SoilMoisture_SimpleModel_Payerne_1998-2012
./Data/PAY_SM_2008-12.txt

Load functions of SWBM

source('simplemodel.R')
source('plotting.R')

Execute model with default parameters and create standard plots (make sure to create directory ./fig beforehand)

output = simplemodel( exp_runoff=6.4, exp_et=0.06, beta=0.66, whc=220, melting=3 )
str(output)
plotting(output)

Execute model with changed parameters and create standard plots

output=simplemodel( exp_runoff=2.4, exp_et=0.06, beta=0.86, whc=220, melting=3 )
plotting(output)

• Model is introduced in:

  • Orth, Koster, Seneviratne 2013, J.Hydrometeorol. (based on Koster and Mahanama, 2012, J.Hydrometeorol.)

• Modifications to the model described in

  • Orth et al. 2015, J.Hydrol [update to snow module]
  • Orth and Seneviratne, 2015, ERL [accounting for dew formation]

• Precipitation
• Net Radiation
• Temperature

• Soil Moisture
• Runoff
• Evapotranspiration
• Snow Water Equivalent

• local-scale: using streamflow observations from near-natural (usually rather small) catchments

  • applied in Orth et al. 2015, J.Hydrol & Orth and Seneviratne, 2014, Clim.Dyn & Orth et al. 2013, J.Hydrometeorol.

• continental-scale: using multiple hydrological reference datasets

  • applied in Orth and Seneviratne, 2015, ERL & Orth et al., 2016, Scientific Reports

• continental-scale calibration (applicable all over Europe):

  • exp_runoff = 3.89, exp_et = 1.14, beta = 0.674 (maximum of normalized ET function), whc = 970.5 [mm], melting = 10.39 [mm snow water equivalent per degreee C above 1 deg C]