Welsh 



Early experiments with SST predictions, not implementing irro- 

 tational flow, showed severe sensitivity of the inflow pattern to 

 bottom weight. That SST should be more sensitive than the hypothe- 

 tical flow field used in our previous work is probably related to 

 the confinement of the SST gradient to a more narrow band which is 

 also located further up the continental rise. The incorporation of 

 convergent flow reduced the sensitivity to bottom weight and allowed 

 more realistic development near the inflow, but the full bottom 

 weight, fg/ho = 2.25 x 10"^ m"-"- sec , could still not be permitted. 

 The value 2.5 x 10"^ m"-^ sec for fg/hg seems to give relatively 

 undisturbed flow near the inflow boundary. 



SUMMARY 



Plausible predictions of sea-surface temperature can now be 

 made using the equivalent barotropic model — plausible in that pre- 

 dicted wave speeds, meanders, and mass transport are close to ob- 

 served values. The lack of meaningful synoptic SST analysis, how- 

 ever, does not allow a definitive testing of the model. Future 

 work must be directed toward improving the analysis of sea-surface 

 temperature. 



REFERENCES 



•'•Arnason, G. and J.G. Welsh, 1966: Numerical flow prediction with 

 the equivalent-barotropic model. Part IV of "Studies of 

 techniques for the analysis and prediction of temperature in 

 the ocean." Interim Report , under Contract N62306-1675 with 

 the U. S. Naval Oceanographic Office. 



^Warren, B.A. , 1963: Topographical influences on the path of the 

 Gulf Stream. Tellus , Vol. 15, pp. 167-183. 



194 



