Formulas to compute vapour pressure deficit according to available data

Source: R/vapor_pressure.R

Actual vapor pressure (ea) derived from relative humidity calculated with rhmin and rhmax.

get.ea(rhmin, rhmax, tmin, tmax)

Arguments

rhmin

numeric minimum daily relative humidity, %
rhmax

numeric maximum daily relative humidity, %
tmin

numeric minimum daily air temperature, °C
tmax

numeric maximum daily air temperature, °C

Value

Actual vapor pressure (ea)

References

Zotarelli L, Dukes MD, Romero CC, Migliaccio KW, Morgan KT (2010). “Step by step calculation of the Penman-Monteith Evapotranspiration (FAO-56 Method).” Institute of Food and Agricultural Sciences. University of Florida.

Author

Cathy C. Westhues cathy.jubin@uni-goettingen.de