A Study of Fukui Heavy Rainfall in 2004

[摘要] As a continuation of a previous study on Niigata-Fukushima heavy rainfall (HR), results from numerical experiments of Fukui HR, which also occurred in July 2004, are presented. As in the previous study, Fukui HR is discussed with an emphasis on the importance of latent instability. It is shown that although Fukui HR is not simulated with global analysis (GANAL) data of JMA, slight modification of the moisture field gives rise to rainfall patterns which are somewhat similar to those indicated by Radar-AMeDAS data. The structure of the convective system is discussed, and it is suggested that the so-called back-building mechanism played an important role in Fukui HR, which occurred under the upper-level westerly jet and the strong low-level vertical shear.

[学科分类] 大气科学