Abstract
Abstract This is the second of a two-part study which uses a combination of composite rawinsonde and individual FGGE case analyses to identify the important physical processes associated with tropical cyclone formation. Part I examined the structural evolution and circulation patterns for genesis and nongenesis cloud clusters in the western North Pacific. This paper analyzes moisture, energy and angular (tangential) momentum budgets for both types of cloud clusters. Results show that both the genesis and nongenesis cloud clusters have similar cumulus activity and similar moisture and energy budgets. An enhanced surface energy flux is found only after the formation of a tropical cyclone with a well-defined center. The results of Part I showed that genesis cloud clusters have comparatively strong 2°–8° radius middle- to low-level cyclonic circulations in comparison with nondeveloping cloud clusters. Transports by the mean transverse circulation are not efficient to produce the observed buildup of the tangen...
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