h n-7.18 COS ch +A6' 4.97sin^ cosUt +335.8° 



. I \ I, 



^f^g-5.42s\ncp cosfZcut +324.4" 



+ Ae 



-7.3 sini 



cos(3a)t+ 142.3° 



(12] 



+ A6>"^-^^^'"^ cos(4tut + 3l7.6°' 



TABLE 3 



MEAN TEMPERATURE DISTRIBUTION FACTORS AT iK)0 EEET FOR THE UPWELLING AREA H 



Factor 



MEAN LATITUDE ^ 



Accepted Factor 

 (means) 



(^ = 23.5° 



^ = 30.5° 



= 35.5° 



?s = 38.5° 



^ = COS(^ 



-7.03 



.6.17 



-7.73 



-7.81 



-7.18 



^1 " sinc^ 



-h.91 



-i^.99 



-5.03 



-4.89 



-h.97 



e , -''2 



^2 ' sin 4> 



-5.02 



-4.32 



-6.55 



-5.81 



-5.ij-2 



S - "'3 

 ^3 " sinc^ 



-5.97 



-8.96 



-7.36 



-6.92 



-7.30 



4 " s'mcp 



-9.06 



-8.50 



-9.27 



-8.83 



-8.92 



°'l.400 



331.3° 



3i^l.8° 



35^^.8° 



31^.5° 



335.8° 



•^2)400 



297.9° 



343.^0 



30i+.l° 



352.0° 



32^.4° 



°3,400 



116.2° 



132.9° 



Ikh.k'' 



175.6° 



142.3° 



°'4.400 



3ii-5.o° 



312.7° 



282.3° 



330.4° 



317.6° 



The mean temperatiire distribution at 400 feet in area H differs dis- 

 tinctly from that in most parts of the North Atlantic. In general the an- 

 nual period predominates in the North Atlantic at the surface and at 400 

 feet. The semiannual period in area H is almost as important as the annual 

 period. Temperature distribution at the Pacific OWS NOVHvffiER is very sim- 

 ilar to temperature distribution in area H and appears to he quite typical 

 for the North Pacific. A general equation approximating temperature dis- 

 tribution at 1+00 feet in the North Pacific may resemble equation (12), al- 

 though regional differences would certainly have to he considered. 



Equations (9) through (12) do not express actual temperature distri- 

 bution but are only temporal and spatial approximations of the mean dis- 

 tribution at 400 feet. Equations (9) and (lO) are considered satisfactory 

 because they are based on numerous data restricted to individual points. 

 Equations (11) and (12) are considered tentative, because they are based 

 on limited data collected in large areas and are applicable only to given 

 latitudes. If values could be computed with these equations for a suffi- 

 cient nijmber of points in the North Atlantic, charts of mean monthly tem- 

 peratiores at various levels could be plotted. Such charts could serve as 

 normal temperature distributions for computing temporal anomalies at 400 

 feet in the same way that the temporal anomalies at the surface can be 

 computed from mean monthly surface charts. 



16 



