wgen_daily: Run Daily Weather Simulation

In HydrosystemsGroup/Weather-Generator: Daily weather generator for performing a climate stress test.

Description

Run Daily Weather Simulation

Usage

wgen_daily(obs_day, n_year, start_month = 10, start_water_year = 2000,
  include_leap_days = FALSE, n_knn_annual = 100, dry_wet_threshold = 0.3,
  wet_extreme_quantile_threshold = 0.8, adjust_annual_precip = TRUE,
  annual_precip_adjust_limits = c(0.9, 1.1), dry_spell_changes = 1,
  wet_spell_changes = 1, prcp_mean_changes = 1, prcp_cv_changes = 1,
  temp_mean_changes = 0)

Arguments

obs_day	daily historical observation dataset as zoo object with variables PRCP, TEMP, TMIN, TMAX, WIND
n_year	number of simulation years
start_month	initial month of the water year
start_water_year	initial water year of simulation
include_leap_days	include leap days in simulation time series
n_knn_annual	number of years used in knn sampling algorithm
dry_wet_threshold	threshold precipitation amount for dry/wet states
wet_extreme_quantile_threshold	threshold quantile for wet/extreme states
adjust_annual_precip	flag to adjust simulated daily precip to match simulated annual precip
annual_precip_adjust_limits	range of maximum annual precip adjustment factors
dry_spell_changes	adjustment factor(s) for dry spell durations (single value, or vector of length 12 for monthly)
wet_spell_changes	adjustment factor(s) for wet spell durations (single value, or vector of length 12 for monthly)
prcp_mean_changes	adjustment factor(s) for mean precip (single value, or vector of length 12 for monthly)
prcp_cv_changes	adjustment factor(s) for precip CV (single value, or vector of length 12 for monthly)
temp_mean_changes	adjustment factor(s) for mean temp (single value, or vector of length 12 for monthly)

Value

a named list containing:

obs	the historical observation dataset used to train the simulation
state_thresholds	monthly precipitation thresholds for defining Markov states based on the historical dataset
transition_matrices	monthly transition matrices based on the historical dataset
state_equilibria	monthly state equilibria probabilities
sim	a data frame of the simulated daily weather

HydrosystemsGroup/Weather-Generator documentation built on May 8, 2019, 8:34 a.m.