CALIBRATION OF INFRARED THERMOMETER 



Two calibration tests were run at three month intervals in the Laboratory, using a fast 

 circulating temperature controlled bath to determine accuracy of the thermometer over the 

 normal operating range of 40 - 92° F. 



The results obtained are shown in Figure 1. Accuracy of thermometer under these 

 conditions was found to be within ± 1.0°F, and appears to be fairly stable. 



FIELD TESTS 



Sea surface temperature measurements and meteorological data were obtained over a 

 48 hour period from stationary platform in 60 feet of water located at 30° 07.2' N & 85° 

 46.5' W, or 1.75 N miles offshore southwest of Panama City, Florida. 



Radiation measurements were made from a height of 45 feet above mean sea level at 

 intervals of one hour during the 48 hour period. 



Measurements of surface temperature using bucket thermometer, air temperature, 

 wet bulb temperature, relative humidity, rainfall, barometric pressure, wind direction and 

 speed, and vertical temperature structure, using bathythermograph, were made in conjunc- 

 tion with the IRT measurements to obtain more information relative to energy exchange 

 across air-sea interface, effect of varying atmospheric conditions and accuracy of instrument 

 imder simulated operating conditions. 



Figure 1. Results of calibration test using temperature controlled 

 bath to determine accuracy of infrared thermometer 



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