Ill 



5l=- 



T -0.5 



+0.025 O -0025 -0.050 -.075 -0.1 



-.125 -015 -.175 -02 -225 -0.25 -.275 -0.3 



ly ", 



Figure 1. Departures from the neutral value of the drag coefficient 

 at 6.0 m as a function of stability expressed in terms of 

 the bulk Richardson number. 



with these precautions and the corrections later applied, the observations 

 are representative of ambient conditions over the open ocean, i' 



III. 



SINOPTIC VARIATIONS OF LATENT AND 

 SENSIBLE HEAT TRANSPORT 



In order to examine the distributions of latent and sensible heat 

 transfer under varying synoptic scale conditions, each observing period 

 was subjected to careful analysis. The objective was twofold: 



1. To delineate synoptic scale disturbances and categorize each 

 system with respect to intensity; 



2. To relate the observations made by the ship to each system 

 and delineate the sector intensity that was sampled. 



To achieve this, conventional methods of analysis were supplemented 

 by a number of other techniques. Among these were: divergence, vorticity 

 and vertical motion computations using the Bellamy (19^9) triangle method 

 for each of the five triangles shown in Figure 2, rainfall analysis of six 

 islands in the Lesser Antilles using a classification based upon occurrence 

 and amount, and a method using wind speed and steadiness as a measure of the 

 occurrence and strength of a synoptic scale disturbance. 



1/ A more complete treatment of ship effect is contained in a doctoral 

 dissertation(Garstang (196^)-)). Similarly, details of analysis and 

 computation referred to in subsequent sections of this paper may be 

 found in the same source. 



