Figure 38 
Course of five-year means of July surface pressures 
anomaly at 30°N, 65°W (upper) and of surface 
geostrophie vorticity anomaiy for July in the 
20°=square centered on 30°N, 65°W (lower). 
Figure 9 
Course of five-year means of annual sea surface 
temperature anomaly for the belt 15-25°N, 65-85°W 
(upper) and of hurricans frequency in the whole 
Atlantic hurricane region (lower). 
