ET0_HS: Reference Evapotranspiration Using Hargreaves-Samani Method

In CropWaterBalance: Climate Water Balance for Irrigation Purposes

Reference Evapotranspiration Using Hargreaves-Samani Method

Description

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

Usage

ET0_HS(Ra, Tavg, Tmax, Tmin)

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.

Value

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

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)

CropWaterBalance documentation built on May 29, 2024, 3:16 a.m.