region_nut_balance: Nutrient balance based in the application of the Geospatial...

In GREENeR: Geospatial Regression Equation for European Nutrient Losses (GREEN)

Nutrient balance based in the application of the Geospatial Regression Equation returning the diffuse, land retention, point sources

Description

Computes the basin nutrient balance.

Usage

region_nut_balance(
  catch_data,
  annual_data,
  alpha_p,
  alpha_l,
  sd_coef,
  loc_years,
  atm_coeff = 0.38
)

Arguments

catch_data	data frame. Definition of the topological sequence of catchments.
annual_data	data frame. Sources of nutrient for each year and catchments.
alpha_p	numeric. First model parameter, the basin retention coefficient.
alpha_l	numeric. Second model parameter, the river retention coefficient.
sd_coef	numeric. Third model parameter, fraction of domestic diffuse sources that reaches the stream network.
loc_years	integer. Years in which the model should be executed.
atm_coeff	numeric. A value for atmospheric attenuation coefficient.

Value

One object, a data frame with the basin nutrient balance

Examples

# the data of the TN scenario
data(catch_data_TN)
data(annual_data_TN)
# the parameter to assess the basin model
alpha_p <- 35.09
alpha_l <- 0.02
sd_coef <- 0.2
# year in which the model should be executed
loc_years <- 1990:2018
# Computing the nutrient balance
basin_loads_b <- region_nut_balance(catch_data_TN, annual_data_TN, alpha_p, alpha_l,
sd_coef, loc_years)

GREENeR documentation built on May 29, 2024, 6:18 a.m.