reference.ET {bigleaf} | R Documentation |
Reference evapotranspiration calculated from the Penman-Monteith equation with a prescribed surface conductance. This function is deprecated. Use potential.ET(...,approach="Penman-Monteith") instead.
reference.ET(
data,
Gs_ref = 0.0143,
Tair = "Tair",
pressure = "pressure",
VPD = "VPD",
Rn = "Rn",
Ga = "Ga_h",
G = NULL,
S = NULL,
missing.G.as.NA = FALSE,
missing.S.as.NA = FALSE,
Esat.formula = c("Sonntag_1990", "Alduchov_1996", "Allen_1998"),
constants = bigleaf.constants()
)
data |
Data.frame or matrix containing all required variables; optional |
Gs_ref |
Reference surface conductance (m s-1); defaults to 0.0143 m s-1. |
Tair |
Air temperature (degC) |
pressure |
Atmospheric pressure (kPa) |
VPD |
Vapor pressure deficit (kPa) |
Rn |
Net radiation (W m-2) |
Ga |
Aerodynamic conductance to heat/water vapor (m s-1) |
G |
Ground heat flux (W m-2); optional |
S |
Sum of all storage fluxes (W m-2); optional |
missing.G.as.NA |
if |
missing.S.as.NA |
if |
Esat.formula |
Optional: formula to be used for the calculation of esat and the slope of esat.
One of |
constants |
cp - specific heat of air for constant pressure (J K-1 kg-1) |