EVALUATION OF A SIMPLE ANNUAL CANOPY EVAPORATION EQUATION.

Abstract

A new equation to estimate annual canopy evaporation with depth of storage capacity effects was evaluated in this study. The inputs to derive the equation were: the precipitation data with a different temporal resolution ranging from one hour to twenty four hours; and the depth of storage capacity varies from 0.1 to 10.0 mm. The estimated annual canopy evaporation from the equation was compared with interception loss measured from others locations in Japan and around the globe. The results shows that annual canopy evaporation can be estimated by taking account the effects of depth of storage capacity into the equation. The equation can be applied to several locations across Japan and around the world.