SOUTHEAST ASIA MONSOON STUDY.

The objective of this program has been to investigate the following aspects of this seasonal reversal 1 Definition of the onset of the summer monsoon over Southeast Asia and statistical analysis of onsets 2 Role of the tropical cyclone during the onset 3 Seasonal changes of upper-air currents over Asia and the differences which may exist between late and early onset years 4 Influence of seasonal heating and changes in thermodynamic structure of the atmosphere over southern Asia during onsets. 5 Retardation of the monsoon over India as compared with Southeast Asia. Generally, three types of synoptic disturbances can be found over Southeast Asia. The warm core case has been described in this series of technical reports 1 the cold core case will be studied next. The third case, the equatorial shearline equatorial convergence zone is the object of this study. Its purpose is to determine the average field of motion and the distribution of precipitation on a cross-section normal to the shearline. Author