For 10 points, name this phenomenon which estimates water removed from both bare surface and plants by vaporization.
Anderson and Goulden developed a truck-based platform to measure this phenomenon regionally, whereas Richard Allen and Wim Bastiaanssen developed the METRIC and SEBAL models to estimate it using satellite and ground data.  The Hargreaves and Blaney-Criddle equations are older empirical methods to estimate it, while the GRACE satellite can calculate it as a residual if other processes in the cycle involving it are known.    C.W. Thornthwaite mapped the global (*) potential of it, while the FAO recommends using an equation named after Penman and Montieth to estimate the reference variety of it.   Most accurately measured using a lysimeter, it can be calculated by dividing latent energy by the heat of vaporization.  For 10 points, name this phenomenon which estimates water removed from both bare surface and plants by vaporization.
Anderson and Goulden developed a truck-based platform to measure this phenomenon regionally, whereas Richard Allen and Wim Bastiaanssen developed the METRIC and SEBAL models to estimate it using satellite and ground data.  
{Evapotranspiration} [accept {ET}; prompt on either {Evaporation} or {Transpiration} by itself] (4) [RA]