Variations in the net exchange of radiation from vegetation of different heights

The measurements of net radiation from one ventilated and two unventilated radiometers were compared, and instrumental corrections were made. Using these radiometers, net radiation was measured from a short grass turf, an alfalfa field, and a corn plot. The magnitude of the net radiation term from the three covers decreased with decreasing height of the vegetative cover. The possible effect which these radiation differences might have on evapotranspiration is discussed.