defaultInterpolationParams.RdReturns a list with the default parameterization for interpolation. Most parameter values are set according to Thornton et al. (1997).
defaultInterpolationParams()A list with the following items (default values in brackets):
initial_Rp [= 140000]: Initial truncation radius.
iterations [= 3]: Number of station density iterations.
alpha_MinTemperature [= 3.0]: Gaussian shape parameter for
minimum temperature.
alpha_MaxTemperature [= 3.0]: Gaussian
shape parameter for maximum temperature.
alpha_DewTemperature [=
3.0]: Gaussian shape parameter for dew-point temperature.
alpha_PrecipitationEvent [= 5.0]: Gaussian shape parameter for
precipitation events.
alpha_PrecipitationAmount [= 5.0]:
Gaussian shape parameter for the regression of precipitation amounts.
alpha_Wind [= 3.0]: Gaussian shape parameter for wind.
N_MinTemperature [= 30]: Average number of stations with
non-zero weights for minimum temperature.
N_MaxTemperature [=
30]: Average number of stations with non-zero weights for maximum
temperature.
N_DewTemperature [= 30]: Average number of stations
with non-zero weights for dew-point temperature.
N_PrecipitationEvent [= 5]: Average number of stations with
non-zero weights for precipitation events.
N_PrecipitationAmount
[= 20]: Average number of stations with non-zero weights for the regression
of precipitation amounts.
N_Wind [= 2]: Average number of
stations with non-zero weights for wind.
St_Precipitation [= 5]:
Number of days for the temporal smoothing of precipitation.
St_TemperatureRange [= 15]: Number of days for the temporal
smoothing of temperature range.
pop_crit [= 0.50]: Critical
precipitation occurrence parameter.
f_max [= 0.6]: Maximum value
for precipitation regression extrapolations (0.6 equals to a maximum of 4
times extrapolation).
wind_height [= 10]: Wind measurement
height (in m).
wind_roughness_height [= 0.001]: Wind roughness
height (in m), for PET calculations.
penman_albedo [= 0.25]: Albedo
for PET calculations.
penman_windfun [= "1956"]: Wind speed function version,
either "1948" or "1956", for PET calculation.
debug [= FALSE]: Boolean flag to show extra
console output.
Thornton, P.E., Running, S.W., White, M. A., 1997. Generating surfaces of daily meteorological variables over large regions of complex terrain. J. Hydrol. 190, 214–251. doi:10.1016/S0022-1694(96)03128-9.
De Caceres M, Martin-StPaul N, Turco M, Cabon A, Granda V (2018) Estimating daily meteorological data and downscaling climate models over landscapes. Environmental Modelling and Software 108: 186-196.