75 

 74 

 73 



JAN 



F 



EB 



MAR 



APR 



MAY 



JUNE 



JULY 



AUG 



SEP 



OCT 



NOV 



DEC 















































































> 



y" 









^1 

 23 .5* N 



































/ 



/ 













\ 



s 







72 



















SURFACE 

 400 FEET 









/ 



/„ 



5'N , 



. 





"^ 



N, 





\ 



s 





71 

 70 































// 



^ 



^''"^ 









N 





\ 





\ 



























/ 



y 





385 











\ 





N 





\ 



69 



68 



C 

 i. 



67 



UI 



cc 

 ?■ 66 



K 

 111 

 a. 65 



z 



HI 



-64 

 63 

 62 



6 1 



-" 



■^ 



\, 





















y 



/ 



/ 



y 







^"S 



\, 





K 1 



35.5'N 



> 



\ 





\ 



N, 



















■ 



^ 



/ 



/ 



/ 















\, 





\ 





\ 



\, 





^ 2 



1.5'N 











/ 



/ 



/ 



/ 

















s 



s. 



> 



\^ 





V 



\ 













/ 



/ 



/ 



A 





















\ 





\ 



s 



"i 



.5*N 



■^^ 



0.5*N 



■' 











/ 



/ 



/ 























k 





\ 







30.S'N 



' ^^ 



^ 



/ 



/ 



/ 







y 



y 



■* 





- 



-- 





-- 23.5'N 



^• 



^•^ 



V 



"■ 





V 



^ 







> 



^. 





^ 



_--_ 



"J- 













^ ~ 



- ~ 



— 



— ■ 



" 





\ 











^ 35 



5'N - 





y 



/ 

































\ 



-s 



s 



— 



— ■ 



-- 



V^ 



/ 



























- 35.5«N - 





__ 



. 



-- 



■ — 



59 

 58 

 ^7 







^ 3 



3.5*N 











































-- 



- — 



— 



— ■ 



~- 







__ 



_. 



__ _ 







_^ 























^_ 



. — 



— ■ 



1 







































"■ 











FIGURE 5 MEAN TEMPERATURE AT SURFACE AND 400 FEET IN AREA H 



The theoretical frequency response (ratio between amplitudes of 

 BHioothed and unsmoothed waves) for the yearly curve (T = 12 months, 

 f = l/l2) of this type of smoothing function (reference 2) is: 



R{f) = e 



-Ztt' 



0.88 



Freq.uency responses of the surface curves at the 5 ocean weather 

 stations agree closely with theoretical response and range between 0.79 

 and 0.88. 



Frequency responses at kOO feet range between 0.^7 and O.78. The 

 lowest value, which occurred at OWS CHARLIE, corresponds approximately 

 to the theoretical frequency response for f = I/5 and tends to indicate 

 presence of "noise" with periods of several months. Such noise may oc- 

 cur in the data through concentration of large numbers of observations 

 taken during periods of strong temperature anomalies. Such inconsist- 

 encies would be attenuated or nearly eliminated by use of long-term 

 data. In this study the data periods are quite short; however, some 

 areas may be more exposed to this type of error in data than others. 

 Such "noise" distorts low amplitude annual waves more than it does high 

 amplitude waves. The unsmoothed mean annual wave amplitude for OWS 

 CHARLIE is O.63 F. The mean for the other four stations is 2.7i^°F, 

 ranging from I.52 to 3.95°F with a mean frequency response of O.73. 



