SEASONAL CHANGES 



171 



A connection between available wind records and temperature changes off Palominos 

 Island is suggested in Table VII. The eight weeks June 26-August 21 are divided into 

 three periods each corresponding to a period of rising or falling temperature, and the 

 amount of temperature change is expressed as the mean rise or mean fall per day. The 

 winds recorded by the ' William Scoresby ' in this area during these periods are expressed 

 as a mean vector for each period. Two possible correlations are to be noted : firstly that 

 the greater rise in temperature accompanies the least wind force, and secondly that 

 the cooling tendency follows the wind with the largest easterly component. The wind 

 records are not as precise as could be desired ; they were made quite irregularly between 



STATION NUMBERS— W5734 

 MILES FROM COAST— ' ISO 



WS733 



WS730 WS729 WS7EB 

 25 I II 



200- 



300- 



100- 



Fig. 52. Distribution of temperature (° C). Section off Callao, August 20-21. The temperature section of 



July 1-3 is given in Fig. 32. 



June 26 and August 21 and in the coastal region between the parallels lat. 10-14° S- 

 There are no records in the exact neighbourhood for 19 days from July 17 to August 4, 

 and it may be that records made in harbour bear little relation to winds out to sea. The 

 means of all these wind records, however, fit the temperature changes, although perhaps 

 not quite so well as might have been expected from the results obtained off Antofagasta 

 and the Guaiiape Islands. An alternative interpretation is discussed on pp. 209 10. 



The line of stations repeated off Callao on August 20-21 differed little in general plan 

 from that of July 1-3, although the water was generally cooler. The water of 18° and 

 19° C. had disappeared or cooled down (Fig. 52), but the warm-water wedge was still 

 to be identified as a trough of water of about 17° C, and the temperature of the open 

 ocean at 155 miles from shore was also 17° C. That the lowered temperature out to sea 



