Tropical Cyclone Formation

摘要: Abstract The physics of tropical cyclone formation is not well understood, and more known about the mature hurricane than formative mechanisms that produce it. It believed part reason for this can be traced to insufficient upper-level atmospheric data. Recent observations suggest cyclones are initiated by asymmetric interactions associated with migratory potential vorticity disturbances low-level disturbances. Favored theories formation, however, focus on internal processes cumulus convection and/or air-sea interaction. This work focuses external and, using both a two- three-dimensional moist geostrophic momentum model, investigates role upper level process. A conceptual model proposed, implications theory discussed.