instrument meas'ored radiation reflected from the sea surface. Arrange- 

 ment of the instrumentation is shown in figure 1. Two radiometers were 

 also mounted with the pyrheliometers. Data were not obtained with the 

 radiometers, however, owing to recorder malfunction. The accuracy of 

 this system is not ideal, because the inverted instruments sometimes 

 observed sea surface shaded by the ship. Radiation data are presented 

 in table 1. 



FIGURE I SHIPBOARD RADIATION MOUNT 



