virtual.temp {bigleaf} | R Documentation |
Virtual temperature, defined as the temperature at which dry air would have the same density as moist air at its actual temperature.
virtual.temp(
Tair,
pressure,
VPD,
Esat.formula = c("Sonntag_1990", "Alduchov_1996", "Allen_1998"),
constants = bigleaf.constants()
)
Tair |
Air temperature (deg C) |
pressure |
Atmospheric pressure (kPa) |
VPD |
Vapor pressure deficit (kPa) |
Esat.formula |
Optional: formula to be used for the calculation of esat and the slope of esat.
One of |
constants |
Kelvin - conversion degree Celsius to Kelvin |
the virtual temperature is given by:
Tv = Tair / (1 - (1 - eps) e/pressure)
where Tair is in Kelvin (converted internally). Likewise, VPD is converted
to actual vapor pressure (e in kPa) with VPD.to.e
internally.
Tv - |
virtual temperature (deg C) |
Monteith J.L., Unsworth M.H., 2008: Principles of Environmental Physics. 3rd edition. Academic Press, London.
virtual.temp(25,100,1.5)