INTRODUCTION 



XI 



LOW PRESSURE AREA 



50- 



40' 



30- 



20- 



- North Equatorial Drift <- 



BELT OF 



- Counter Equatorial Currents *- 



LOW PRESSURE 



South Equatorial Drift 



10* 



HIGH PRESSURE AREA 

 Currents vaxia-ble 



-Easterly Drift - 



10' 



20* 



30" 



4-0' 



LOW PRESSURE AREA 



50 



FIG. 5. 



