and the average total mass transport through a section "between 

 65° and 45°S is, therefore, 



6 x 10* x 2.22 x 10 8 = 1.33 x 10 14 [gr sec" 1 ], 

 which agrees well with the observed mass transport. According to 



A.J. Clowes' (1933) computations the mass transport through the 



14 -1 

 Drake Passage is about 1.1 x 10 gr sec , and it is very probable 



that the transport in the central parts of the South Atlantic Ocean 



is approximately 2Qfo greater. 



XI . Outline of future work 



Equation (11) is being used for determining the horizontal 

 mass transport of the wind driven circulation in the North Atlantic 

 Ocean between the equator and about 55°N. The east and west bound- 

 aries of the ocean are the continents. They are approximated as 

 closely as possible by broken straight lines following the conti- 

 nental shelf along the 200 m isobath. 



The boundary condition along the continental slopes, which may 

 be identified with the continents themselves, requires that the 

 mass transport be parallel to the boundary curves. Since an additive 

 constant with the stream function v// makes no difference, the boundary 

 condition is given by \p = along the continents. 



However, since this model is not completely enclosed by land, 

 more complicated conditions have to be introduced along the northern 

 and southern boundaries, and between the Antilles Arc and Florida. 

 The Guiana Current along the northeast coast of South America trans- 

 ports an appreciable amount of water across the equator which enters 

 the model ocean in the southwest corner. This fact cannot be dis- 

 regarded. It has to be taken into account as a "source" by the 



48 



