Origins of Convective Activity Over Panama
TEXAS A AND M RESEARCH FOUNDATION COLLEGE STATION CENTER FOR THEORETICAL PHYSICS
Pagination or Media Count:
Satellite-derived outgoing longwave radiation OLR data were used to examine convective variability over the Panama region. Time series analysis of the area-averaged daily OLR data for 1984 and 1985 revealed a persistent 12-d oscillation in convective activity during each season. Composite analyses of OLR data for the area 120W-40W and 35S-35N for the 1984 dry 1 January-9 May and wet 10 May-4 December seasons showed this oscillation extends beyond Panama and the Central America region into the eastern Pacific. Composite diagrams of u- and v-wind components and geopotential heights were constructed using daily upper-air soundings from Albrook AFS, Panama in order to infer a vertical structure to the oscillation. These composites showed well-defined trends in all three variables associated with each phase of the 12-d oscillation.