台風経路の違いによる風水害への影響について

Abstract

The severity of meteorological disasters spawned by typhoons critically depends on not only the intensity but also the track of typhoons. A slight change of the track of typhoons would induce a large difference in the intensity and spatial distribution of heavy rainfall and high winds. The present study explores the influences of typhoon tracks on the representations of heavy rainfall and high winds in numerical simulations of typhoon-induced events with the use of a regional meteorological model. The analyses are focused on high-impact typhoons over the Kanto Plain. A nesting capability is used to resolve convective storms embedded in typhoons at the 1-km horizontal grid spacing. A large variability in the representations of heavy rainfall and high winds is demonstrated.