ROLE OF THE SYNOPTIC SCALE ON CONVECTION OVER SOUTHEAST ASIA DURING THE SUMMER MONSOON.
Final rept. 1 Feb 67-31 Jan 69,
HAWAII INST OF GEOPHYSICS HONOLULU
Pagination or Media Count:
Using Udorn and Saigon as reference stations, an investigation is made of convective activity over Southeast Asia during July 1967. Particular emphasis is placed on the role of the large synoptic scale on convective activity. Periods of suppressed and increased convective activity were isolated using the radar index. Vertical profiles of virtual equivalent potential temperature for these periods portray characteristic variations between suppressed and increased convective conditions. Time cross sections for Udorn show a correlation between depth and strength of the southwest monsoonal air current over Southeast Asia and convective activity. Examination of the synoptic analyses for the periods of suppressed and increased convection reveal that convection is suppressed when the monsoonal current is disrupted, whereas convection is increased when the depth and strength of the monsoonal current is increased. Author