eto {ClimInd}

Reference evapotranspiration

Description

If data available using Fao-56 Penman-Monteith

Usage

eto(
  tmin,
  tmax,
  toa,
  w,
  lat,
  tdew,
  mde,
  radiation = NA,
  insolation = NA,
  rh = NA,
  data_names = NULL,
  time.scale = YEAR,
  na.rm = FALSE
)

Arguments

tmin

daily minimum temperature, Celsius

tmax

daily maximum temperature, Celsius

toa

solar radiation at TOA, W/m2

w

average wind, m/s

lat

latitude, degree

tdew

dew point, Celsius

mde

digital elevation model, m

radiation

net radiation, J/m2

insolation

insolation, hours of sun

rh

relative humidity, percentage

data_names

names of each period of time

time.scale

month, season or year

na.rm

logical. Should missing values (including NaN) be removed?

Value

mm

References

Chiew, F.H.S., Kamaladasa, N.N., Malano, H.M., McMahon, T.A., 1995. Penman–Monteith FAO-24 reference crop evapotranspiration and class-A pan data in Australia. Agric. Water Manage. 28, 9–21

Examples

data(data_all)
eto(tmin = data_all$tn, tmax = data_all$tx, 
     toa = data_all$radiationtoa, w = data_all$wind,
     lat=data_all$lat, tdew = data_all$dewpoint, 
     mde=data_all$mde, radiation = data_all$radiation, 
     insolation=data_all$insolation, rh = data_all$humidity)