Accession Number : AD0470136


Title :   CALIBRATION AND FIELD TEST OF IRT.


Descriptive Note : Technical rept.,


Corporate Author : LAMONT GEOLOGICAL OBSERVATORY PALISADES N Y


Personal Author(s) : Ichiye,Takashi ; Plutchak,Noel B


Report Date : Apr 1965


Pagination or Media Count : 52


Abstract : A number of tests were made to determine whether an infrared thermometer had sufficient accuracy to be useful for determining the fine structure of surface water temperature concurrently with field experiments of dye diffusion. A simple calibration was made by mounting the sensor at 33 ft, 13 ft, and 4 ft from the water surface of a basin 4 ft in diameter. Corrections of I R T readings for the airpath of 33 ft reach 2 F for water-air temperature differences (water warmer than air), of 20 F, 40 F and 60 F, respectively. These corrections seem to increase with the length of the airpath. The angle of attack of the sensor appeared to cause problems only when the angle exceeds 40 degrees from normal. With I R T mounted on the tower at Panama City (at 100 feet from the sea surface) the instrument was able to detect tide lines, ship wakes, and dye patches. (Author)


Descriptors :   *THERMOMETERS , *OCEANS , INFRARED EQUIPMENT , SURFACE TEMPERATURE , OCEANOGRAPHY , TEST METHODS , WATER , ERRORS , FLORIDA , TIDES , WAKE , DYES , SNOW , RAINFALL , DETECTION , SULFUR HETEROCYCLIC COMPOUNDS , AMINES , OXYGEN HETEROCYCLIC COMPOUNDS , CONVECTION


Distribution Statement : APPROVED FOR PUBLIC RELEASE