FAO-56 Penman-Monteith reference evapotranspiration (ET_0)
FAO-56 Penman-Monteith reference evapotranspiration (ET_0)
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 )
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 |
et0, mm/day
Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.