Classification of Precipitation Systems in Mature and Early Weakening Stages of Typhoons around Japan

摘要

Precipitation system size, shape, location, lifetime, and motion in 16 mature and early weakening stages of typhoons around Japan was studied, using conventional radar network data. Based on these findings, precipitation systems in typhoons apart from mid-latitude frontal zones were classified into inner and outer rain shields, inner and outer rainbands, and eyewalls. Delta-shaped precipitation systems, called delta rain shields, were found to characterize typhoons approaching mid-latitude frontal zones.