Description Usage Arguments Value Author(s) References Examples
Calculates daily ET using Penman Monteith hourly formula for every hour
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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. |
ET daily in mm.h-1
Guillermo Federico Olmedo
Allen 2005 ASCE
1 2 3 4 5 6 7 | 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")
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