76 



Wind System over the North Atlantic 



Fig. 46. Map showing annual mean sea-level pressure, according to Joseph 

 Chase (1951, MS). Pressures are given in the excess of millibars over 1000 mb. 



Fig. 47. Map showing mean sea-level pressure for January (Chase, 1951, 

 MS). Pressures are given in the excess of millibars over 1000 mb. 



