EBER: SEA-SURFACE TEMPERATURE ANOMALIES 



Figure 12. — Sea-surface temperature anomaly for No- 

 vember 1956. Hatched areas colder than normal. Heavy 

 lines represent the 1° C anomaly contours which define 

 warm ( -|- ) or cold ( — ) cells. 



Figure 14. — Sea-surface temperature anomaly for June 

 1957. Hatched areas colder than normal. Heavy lines 

 represent the 1° C anomaly contours which define warm 

 ( + ) or cold ( — ) cells. 



CO" ISO* MO* OO" 160* ITO" IBO* ITO* leC I50» 140' ISO" 120* "0* 100* SO- 80* 



Figure 13. — Sea-surface tempei'ature anomaly for March 

 1957. Hatched areas colder than normal. Heavy lines 

 represent the 1° C anomaly contours which define warm 

 ( -f ) or cold ( — ) cells. 



Figure 15. — Sea-surface temperature anomaly for Au- 

 gust 1957. Hatched areas colder than normal. Heavy 

 lines represent the 1° C anomaly contours which define 

 warm ( + ) or cold ( — ) cells. 



a single prominent cell which, in August 1957, 

 was centered at about lat 40° N, long 175° E 

 (Figure 15). This feature remained fairly 

 steady through November 1957 (Figure 16), 

 but all remnants of the cold anomalies in the 

 east sector vanished. 



The cell structure in the negative anomaly 

 deteriorated at the beginning of 1958, but re- 

 formed in March with the cold cell east of its 

 earlier position, at lat 30° N to 40° N, long 145° 

 W to 170° W (Figure 17) . Further fluctuations 

 took place in the negative region until August 

 1958, when a dominant cold ceil appeared at 

 lat 35° N to 50° N, long 150° W to 175° W 



(Figure 18). The zone of positive anomalies 

 along the North American coast was strongly 

 developed during most of 1958 and 1959. How- 

 ever, the emphasis in the distribution shifted 

 to the south after mid-1958, and the warm 

 tongue reaching southwestward, south of lat 

 30° N, was most intense in the early months of 

 1959 (Figures 19 and 20). 



Elsewhere the pattern tended to be somewhat 

 weak and disorganized, and remained so until 

 November 1959, when prominent cells, in which 

 departures from normal exceeded 2° C, were 

 evident in the central oceanic region of neg- 

 ative anomalies and in the positive coastal zone 



349 



