dailyET: Calculates daily ET using Penman Monteith hourly formula for...

In water: Actual Evapotranspiration with Energy Balance Models

Description

Calculates daily ET using Penman Monteith hourly formula for every hour

Usage

dailyET(WeatherStation, DOY, height, lat, long, elev, ET = "ETr",
  long.z = WeatherStation$long, date = "auto", MTL)

Arguments

WeatherStation	a data frame with all the needed fields (see example)
DOY	day of year
height	weather station sensors height in meters
lat	latitude in decimal degrees of the weather station
long	longitude in decimal degrees of the weather station
elev	elevation in meters of the weather station
ET	"ETo" for short crops, similar to clipped, cool-season grass; or "ETr" for tall crops, similar to 0.5 m tall full-cover alfalfa.
long.z	longitude for local time
date	if date == "auto" will use a MTL file provided or present in the working folder to select the date.
MTL	Metadata file. If not provided will look for one on working directory. If provided or present will calculate weather conditions on satellite overpass.

Value

ET daily in mm.h-1

Author(s)

Guillermo Federico Olmedo

References

Allen 2005 ASCE

Examples

csvfile <- system.file("extdata", "apples.csv", package="water")

WeatherStation <- read.WSdata(WSdata = csvfile, date.format = "%d/%m/%Y", 
lat=-35.42222, long= -71.38639, elev=201, height= 2.2, cf=c(1,0.2777778,1,1))

dailyET(WeatherStation = WeatherStation, lat=-35.422, long=-71.386, elev=124, 
ET="ETo")

water documentation built on May 2, 2019, 2:17 a.m.