field corresponding to the observed density distribution. This approach re- 

 sembles closely the pioneering ocean circulation calculations carried out by 

 Soviet scientists at the Institute of Oceanology in Moscow. 



Recently, preliminary diagnostic calculations using the synthetic syn- 

 optic data have been carried out and the results are very promising. When 

 the results are compared with the solutions for a homogeneous ocean, the 

 transport patterns are consistently closer to measured values. For example, 

 the transport of the subtropical gyres in the Northern Hemisphere increases 

 to 80 and 70x10" rri'/sec for the Atlantic and Pacific, respectively. The 

 transport of the Circumpolar Current is also increased about an order of 

 magnitude compared to the value shown in Figure 23. The value is very 

 close to that indicated by recent measurements in the Drake Passage. 



84 



46 



60 



30 



30 



60 



80 



60' 120 180 120 60 



Figure 22. Ocean currents predicted by global model, assuming homogeneous ocean of uniform depth. 



