How do i calculate vpd of large data set from air temperature and relative humidity data

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Guido Bongi

there are refs for VPD and excel in several sources like in http://cronklab.wikidot.com/calculation-of-vapour-pressure-deficit

Dennis Ochuodho Otieno

Use the MAGNUS Equation

VPD=((6.1078*EXP(17.08085*T in degC/(234.175+T in degC)))-(6.1078*EXP(17.08085*T in degC/(234.175+T in degC))*(Humidity in %/100)))/10.

That should help, i hope.

Oluwafemi Adeyeri

RH= ea/es*100

es= 6.1078*exp[17.27ta/(ta+273.3)]

VPD= es- ea

Dambaru Ballab Kattel

Please see my article

Joseph Ondier

which article in particular sir. Dambaru Ballab Kattel

Comparison of temperature lapse rates from the northern to the southern slopes of the Himalayas

Najib Bennis

see this paper :

Fuzzy Modeling Vapor Pressure Deficit to Monitoring Microclimate in Greenhouses