Abstract: The description is presented of the design, calibration and operation of a 100-ton, floating, drag-plate, lysimeter used both for measurement of atmospheric shear stress and evapotranspiration from a growing grass turf. ...

Abstract: The water level in a sump of a 6.1 m diameter floating lysimeter tank is measured by a linear-variable differential transformer. The transducer output representing weight changes of the floating tank is recorded continuously ...