Evapotranspiration refers to the process by which water is evaporated from the ground (such as soil, plants, and bodies of water) and transpired by plants into the atmosphere. Full definition
Soil moisture sensors show, over time, how much water has gone into the ground, and how much has left, either from drainage or in the form of evapotranspiration from plants. (discovermagazine.com)
This would contribute to a difference in evapotranspiration rates and aridity. (montanaclimate.org)
The average relative humidity in cities is usually several percent lower than that of adjacent rural areas, primarily because of increased runoff of precipitation and the lack of evapotranspiration from vegetation in urban areas. (britannica.com)