Calculate Reference evapotranspiration (ETo) according to FAO standards
Latitude (Decimals)
Elevation (m)
Date
Temperature (Min)
Temperature (Max)
Temperature (Dewpoint)
Temperature (Dry)
Temperature (Wet)
RHmin
RHmax
RHmean
Wind Speed (m/s)
Wind Speed height (m)
Sunlight Hours
Radiation
ETo (mm/day)
ET Value
| Tmean | Dewpoint | J | |||
|---|---|---|---|---|---|
| P | γ | Δ | |||
| δ (rad) | dr | φ | |||
| ωs | Ra | N | |||
| e°(Tmin) | e°(Tmax) | e°(Tmax) | |||
| es | e°(Tdew) | ea | |||
| es-ea | Rso | Rs | |||
| Rns | Rnl | Rn | |||
| u2 | |||||
| Tdew | Twet | Tdry | RHmin | RHmax | RHmean |