Temporal variability of the controls on evapotranspiration from grazed pastureland during extreme drought

Temporal variability of the controls on evapotranspiration from grazed pasturized during extreme drought was studied. Data collected as a part of the International H2O Project 2002 (IHOP) were used to carry out this study for a site experiencing drought. The results suggest that heat flux varies over time in convert with the interrelationships are complex and no property can be considered in isolation, soil moisture, in particular played a key role in controlling the amount of water transferred into the atmosphere even though the site was experiencing drought. This was because soil moisture is both the chief source of moisture and an important control on soil resistance.