Abstract : The project is designed to achieve three major goals: (1) Assist the planning of TOGA COARE to optimize experimental design and measurement strategy, focusing on the larger scale arrays but paying particular attention to the problem of integrating the measurements from the arrays; (2) Participate in the TOGA COARE field program during the IOP; and (3) Carry out a research program examining the mean properties and vertical heating profiles of mesoscale through synoptic-scale circulation systems in the COARE region, exploring the relationships between these systems and larger scale forcing, and determining the processes that determine the vertical structure of the atmosphere during COARE.