calculateETrefPM: FAO Penman-Monteith method for daily reference evapotranspiration

Description

Calculation of daily reference evapotranspiration using the FAO-56 Penman-Monteith method for a dataset stored in a data.frame.

Usage

calculateETrefPM(
  data,
  lat,
  alt,
  za,
  DAP = 1,
  date,
  Ta = NULL,
  Tmin = NULL,
  Tmax = NULL,
  RH = NULL,
  RHmin = NULL,
  RHmax = NULL,
  Rg,
  AP,
  WS,
  G = NULL,
  Kc = NULL
)

Arguments

data: Data frame containing the data
lat: Numeric, latitude in decimal degrees
alt: Numeric, altitude in meters
za: Numeric, anemometer height in meters
DAP: Numeric, days after planting for the first date
date: String with the column name containing date records
Ta: Optional. String with the column name containing mean air temperature (degC)
Tmin: Optional. String with the column name containing minimum air temperature (degC)
Tmax: Optional. String with the column name containing maximum air temperature (degC)
RH: String with the column name containing mean relative humidity (percent)
RHmin: Optional. String with the column name containing minimum relative humidity (percent)
RHmax: Optional. String with the column name containing maximum relative humidity (percent)
Rg: String with the column name containing global radiation (MJ/m2/day)
AP: String with the column name containing atmospheric pressure (hPa)
WS: String with the column name containing wind speed (m/s)
G: Optional. If NULL, soil heat flux is assumed to be zero (MJ/m2/day)
Kc: Optional. Crop coefficient column name