II. Procedure 



A. Introduction 



This project is aimed primarily at the eventual 

 development of practical and operationally useful techniques 

 for the prediction of the thermal structure of the ocean. 

 Unfortunately, this is a complicated and difficult problem, 

 for the thermal structure is affected by many processes, 

 some of profound effect and all seeking to change its nature 

 simultaneously. Separating these processes for study artd 

 estimating quantitatively their relative effects is therefore 

 the first field of interest for this project. Added' to the 

 difficulties inherent in the problem itself is the fact that, 

 in a science where controlled experimentation is impossible 

 and data collection expensive, very little data adequate for 

 an Investigation of this type are available. 



We may consider that the processes that affect 

 the thermal structure may be divided into three classes: 

 the thermodynamic, which involve a change in the heat content 

 of the water column; the static, which involve temperature 

 changes in the column due either to internal or external forces 

 without change in the heat content; and the dynamic, v;hich are the 

 result of the three-dimensional field of motion. Under each 

 we may list several processes: 



1. Thermodynamic processes 



a. Radiation - incident, reflected, and back radiation. 



b. Exchange with atmosphere by molecular conduction. 



