Evapotranspiration



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average daily temperature
% average daily humidity
average daily wind speed and height of measurement
W/m2 average daily solar radiation
average daily atmospheric pressure
elevation
degrees latitude
date

Evapotranspiration

The displayed evapotranspiration value is calculated using the FAO recommended Penman-Monteith equation.

Documentation

Parameters used

Parameters calculated to obtain evapotranspiration value

Detailed analysis


Parameter Value
evapotranspiration
slope of saturation vapor pressure curve
mean saturation vapor pressure
actual vapor pressure derived from humidity
vapor pressure deficit
day of the year
inverse relative distance Earth-Sun
solar declination
sunset hour angle
extraterrestrial radiation
daylight hours
clear-sky solar radiation
net solar shortwave radiation
net longwave radiation
net radiation

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