1. 都市気象LESモデルを用いたゲリラ豪雨の種の解析
- Author
-
YAMAGUCHI, Kosei, TSUCHIHASHI, Tomohiro, NAKAKITA, Eiichi, and TAKAMI, Kazuya
- Subjects
Physics::Fluid Dynamics ,水平渦管 ,Updraft ,鉛直渦管 ,Torrential rainfall ,Vertical vortex tube ,519.9 ,Physics::Atmospheric and Oceanic Physics ,ゲリラ豪雨 ,上昇流 ,Horizontal vortex tube - Abstract
Convective genesis is subject of our research. The aim is understanding which factor is the most strong on the generating process and how strong urban areas have influence on convective genesis. Cumulus clouds above urban areas on summer were simulated by our model. The pair of vortex tubes that produce cloud droplet were analyzed. As a result, backward facing step flow and vertical wind shear came up behind buildings. They made horizontal vortex tubes. In addition, anthropogenic heat and sensible heat from surface and forced ascent by convergence of horizontal wind made upward flow and then vertical vortex tubes rises up with moisture.
- Published
- 2017