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ETo calculation based on FAO-56 Penman-Monteith methodology, with data from automatic weather stations (AWS) downloaded and processed in function *daily_download_AWS_INMET*

Source: R/daily_eto_FAO56.R
daily_eto_FAO56.Rd

This function will calculate the reference evapotranspiration (ETo) based on FAO-56 (Allen et al., 1998) with the automatic weather stations (AWS) data, downloaded and processed in function *daily_download_AWS_INMET*.

Usage

daily_eto_FAO56(lat, tmin, tmax, tmean, Rs, u2, Patm, RH_max, RH_min, z, date)

Arguments

lat

A numeric value of the Latitude of the AWS (decimal degrees).

tmin

A dataframe with Minimum daily air temperature (Celsius).

tmax

A dataframe with Maximum daily air temperature (Celsius).

tmean

A dataframe with Mean daily air temperature (Celsius).

Rs

A dataframe with mean daily solar radiation (MJ m-2 day-1).

u2

A dataframe with Wind speed at two meters high (m s-2).

Patm

A dataframe with atmospheric Pressure (mB).

RH_max

A dataframe with Maximum relative humidity (percentage).

RH_min

A dataframe with Minimum relative humidity (percentage).

z

A numeric value of the altitude of AWS (m).

date

A data.frame with the date information (YYYY-MM-DD).

Value

Returns a data.frame with the AWS data requested

Author

Roberto Filgueiras, Luan P. Venancio, Catariny C. Aleman and Fernando F. da Cunha

Examples

if (FALSE) { # \dontrun{
eto <- daily_eto_FAO56(lat, tmin, tmax, tmean, Rs, u2, Patm, RH_max, RH_min, z, date)
} # }