CropWaterBalance (version 0.2.0)

ET0_HS: Reference Evapotranspiration Using Hargreaves-Samani Method

Description

Calculates daily reference evapotranspiration amounts using the Hargreaves-Samani method.

Usage

ET0_HS(Ra, Tavg, Tmax, Tmin)

Value

A matrix of 1-column with the same length as `the input values with the daily potential evapotranspiration values in millimetres.

Arguments

Ra

A vector, 1-column matrix or data.frame with extraterrestrial solar radiation in MJ m-2 day-1.

Tavg

A vector, 1-column matrix or data.frame column with daily average air temperature.

Tmax

A vector, 1-column matrix or data.frame with daily maximum air temperature in Celsius degrees.

Tmin

A vector, 1-column matrix or data.frame with daily minimum air temperature in Celsius degrees.

See Also

ET0_PM() ET0_PT()

Examples

# See `?DataForCWB` for more on this data set
Tavg <- DataForCWB[, 2]
Tmax <- DataForCWB[, 3]
Tmin <- DataForCWB[, 4]
Ra <- DataForCWB[, 5]
ET0_HS(Ra = Ra, Tavg = Tavg, Tmax = Tmax, Tmin = Tmin)