This formula uses the same formula described by the Bureau of
Meteorology (BOM) and the American Meteorological Society. Other formulas
described by described by Murray (1967) or Tetens (1930) to calculate
saturated vapour pressure from temperature in degrees and Celsius and
relative humidity can also be called.
Arguments
- Tm
numeric, Temperature in degrees Celsius
- eq
character, Type of equation to use while calculation VPD. defaults to the "BOM"
(Bureau of Meteorology equation, Australia). Other options, "Murray" and
"Sapak".
Value
Saturated vapour-pressure in kPa, class units
References
Murray, F. W., 1967: On the Computation of Saturation Vapor Pressure.
J. Appl. Meteor. Climatol., 6, 203–204,
https://doi.org/10.1175/1520-0450(1967)006<0203:OTCOSV>2.0.CO;2
Examples
calc_svp(Tm = 30)
#> 4.242794 [kPa]
calc_svp(Tm = 30, eq = "Murray")
#> 4.241806 [kPa]