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ClimInd (version 0.1-3)

penman_fao_diario: FAO-56 Penman-Monteith reference evapotranspiration (ET_0)

Description

FAO-56 Penman-Monteith reference evapotranspiration (ET_0)

Usage

penman_fao_diario(
  Tmin,
  Tmax,
  U2,
  J,
  Ra = NA,
  lat = NA,
  Rs = NA,
  tsun = NA,
  CC = NA,
  ed = NA,
  Tdew = NA,
  RH = NA,
  P = NA,
  P0 = NA,
  z = NA,
  crop = "short",
  na.rm = FALSE
)

Arguments

Tmin

minimum temperature, Celsius

Tmax

maximum temperature, Celsius

U2

average wind, m/s at 2m

J

day of the year

Ra

radiation, (MJ m-2 d-1)

lat

latitude, degrees, CRS('+proj=longlat +ellps=WGS84 +datum=WGS84')

Rs

daily incoming solar radiation (MJ m-2 d-1)

tsun

sunshine duration, hours

CC

CC

ed

actual vapour pressure

Tdew

dew point, Celsius

RH

relative humidity, percentage

P

atmospheric pressure, kPa

P0

P0

z

mde

crop

"short" short reference crop or "tail" tail reference crop

na.rm

na.rm

Value

et0, mm/day