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 rhmean, if rhmin and rhmax not available or bad data quality.

get.ea.with.rhmean(tmin, tmax, rhmean)

Arguments

tmin

numeric minimum daily air temperature, °C
tmax

numeric maximum daily air temperature, °C
rhmean

numeric mean daily relative humidity, %

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