chart seems to indicate a warmer condition than 

 that which the ART found. 



For the next period. 24 to 30 July, the ART 

 SST and MARCOM SST for 25 to 28 July show 

 a very good agreement for the 10° to 16° iso- 

 therms. The MARCOM chart reflects a warmer 

 condition by the location of the 8° isotherm as 

 compared with that of the ART. 



Though the ART data gathered in 1974 were 

 only during one month, they do illustrate a good 

 comparison with the temperature information 

 presently being used by the Ice Patrol for iceberg 

 deterioration data. The ART has one immediate 

 advantage in that it enables the user to possess 

 near real-time data, whereas the MARCOM 

 charts normally arrive two weeks after the time 

 period for which they were drawn. 



Another advantage of the ART, though per- 

 haps not as obvious as that above, is the quality 

 of the data. The MARCOM SST charts are 

 primarily drawn from sea surface temperatures 

 reported by vessels transiting the area. Often, 

 these data are not of the accuracy desired due to 

 vessel measurement procedures and infrequent 

 transits, and large regions may lack any reported 

 temperature. However, the isotherms are faired 

 in to fit the available information as best as pos- 

 sible. With the ART there is a continuous re- 

 cording of temperature along the entire flight 

 track, excluding areas of weather, enabling more 

 representative temperature charts to be developed 

 for the areas covered. 



Commander, International Ice Patrol intends 

 to utilize the ART during the 1975 Ice Season 

 for the collection of deterioration data, and hope- 

 fully for current monitoring. 



I would like to thank MST1 Neil O. 

 TIBAYAN for his invaluable assistance in pre- 

 paring the SST charts. 



RELATED REFERENCES 



Light, M. U.S. Coast Guard Airborne Radiation Ther- 

 mometer (ART) Surveys of Atlantic Coastal Waters, 

 U.S. Coast Guard Oceanographic Unit. Prepared for 

 the 1968 Meeting of the Committee for the Scientific 

 Exploration of the Atlantic Self (SEAS) November 

 20-21, 1969. 



Daignault, Frank NEW MISSION, Oceans Magazine 

 SEP-OCT 1972. 



Mean Sea Surface Temperature for July, Fleet Weather 

 Center Norfolk, Virginia. 



Sea Surface Temperature Charts (5-8 July 1974, 18-21 

 July 1974, 28-30 July 1974), Maritime Command Head- 

 quarters, Halifax, Nova Scotia, Canada. 



Communications, U.S. Coast Guard Oceanographic Unit, 

 Joseph W. Deaver, Senior ART Technician. 



International Ice Observation and Ice Patrol Service in 

 the North Atlantic Ocean— Season of 1954, Bulletin 

 No. 40, USCG. 



Report of the International Ice Patrol Service in the 

 North Atlantic Ocean— Season of 1963, Bulletin No. 



49, USCG. 



Report of the International Ice Patrol Service in the 

 North Atlantic Ocean — Season of 1964, Bulletin No. 



50, USCG. 



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