Evapotranspiration



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average temperature
% average humidity
average wind speed and height of measurement ( height of anemometer above ground )
W/m2 average Solar radiation
average pressure
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Evapotranspiration

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

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Parameters

Parameters calculated to obtain evapotranspiration value

Detailed analysis


Parameter Value
evapotranspiration
evapotranspiration1
evapotranspiration2
(d) slope of saturation vapor pressure curve
(g) psychometric constant
(es) mean saturation vapor pressure
(ea) actual vapor pressure derived from humidity
(vpd) vapor pressure deficit
(j) day of the year
(dr) inverse relative distance earth-sun
(d) solar declination
(ws) sunset hour angle
(ra) extraterrestrial radiation
(n) daylight hours
(rs) solar radiation
(rso) clear-sky solar radiation
(rns) net solar shortwave radiation
(rnl) net longwave radiation
(rn) net radiation

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