Actual evapotranspiration

"Sum of the quantities of water evaporated from the soil and plants when the ground is at its natural moisture content." (United Nations Publications, 2013) 

Sources

United Nations Publications. "Glossary of Shared Water Resources (English-Arabic): Technical, Socioeconomic and Legal Terminology." (2013). DOI:https://dx.doi.org/10.18356/70b462ce-en