H =Ze 
strong temperature gradient near the American coast and during World War Is; 
the latter of course must be considered as unreliable. Superimposed on these 
fluctuations are unmistakable secular trends which, however, vary with latitude 
and longitudes In the tropics cooling predominates up to 1915-20, followed by 
warming especially after 1925. This pattern also occurs at many squares far-= 
ther north but other types of curves are alse found such as continuous warming 
> « 
we the secular 
levelling off toward the end of the resords Fige 5 summeri 
variation by latitude belts. 
The somewhat irregular character of the secular trends may be resolved 
partly by plotting charts of annual anomaly. As example, figse 4 and 5 show 
the anomalies and their analysis for 1936e A distinct and suggestive pattern 
is in evidences Along the western edge of the ccean positive anomalies are 
pronounced, with a little increase with lativudee Bus these anomalies de= 
crease regularly eastward. Slight negative values cecur in the easternumess 
squares and one suspests that a strong negative anomaly center is situated in 
Sade Lear ce 
IS GAGE Ue 
the southeastern part of the ccean. This anomaly gradient pilus the nm 
€ 
southwest tilt of the whoie field suggests a connection with sirculation ano=- 
malies rather than a general radiative influences. Actually the circulation 
of the whole subtropical anticyclone (measured geostrophically) was above _ 
average in 19363 thus the departure was in the right sense to explain the 
oceanic temperature anomaly field. This matter, though very interesting, 
could not be Deiat aneer ener within the scope of the projecte 
The analysis of the secular variations can be refined by considering 
the contribution of individual months or seasons to the annual variations 
This refinement was not carried cut beyond noting qualitatively that trends 
were similar in all seasons. Further the secular trends, though relatively 
