FF, 10 



At = +0.08 c 



s = 0.05°C 



N = 61 



AT 



0.11 C 

 s = 0.08°C 

 N = 22 



STD/SV 



^m 



TEMPERATURE DIFFERENCE C 



Figure 10. Comparison of Gulf of Alaska towed thermistor surface temperatures with STD/SV 

 and SVTP surface temperatures. 



MERCURY-IN-GLASS THERMOMETER ERRORS 



During the CAPER and RAPLOC/DEEPTOW experiments, independent surface 

 temperatures were measured with a mercury-in-glass thermometer. Temperatures were 

 measured on deck immediately after a seawater sample was drawn with a bucket. Temper- 

 atures determined in this manner are referred to as "bucket temperatures" and the 

 thermometer is referred to as a "bucket thermometer." 



During CAPER, bucket temperatures were measured by both the DE STEIGUER 

 and the MOANA WAVE. Eighteen comparisons of bucket and CTD/SV surface tempera- 

 tures were made from the MOANA WAVE. For these comparisons, the bucket temperatures 

 were consistently higher than the CTD/SV temperatures. The average difference was 0.04°C, 

 with a standard deviation of 0.09°C. No CTD/SV measurements were made concurrent 

 with the DE STEIGUER bucket temperatures. However, XBT profiles were made concur- 



32 



