2016ネン タイフウ 10ゴウ セッキン ニ トモナウ ヒダカ サンミャク ト イシカリ サンチ ニオケル コウスイタイ コウゾウ

The outer rainbands of Typhoon 1611 (LIONROCK), which caused heavy rainfall in the Tokachi region of Hokkaido from August 29 to 31, 2016, were analyzed by the Nagoya University Cloud-Resolving Storm Simulator (CReSS) at a 2 km grid size. From the meteorological radar observations of the Japan meteorological agency, rainbands were distributed from the Tokachi area in the east-southeast and east-southeast directions, respectively, were successfully simulated using CReSS. The rainband advected from the south-southeast had an equivalent potential temperature exceeding 340 K, indicator heavy rainfall, and in the northern region, a shear line of winds in the southeast and south-southeast was formed having unstable atmospheric conditions. Results show this disturbance directed to the Hidaka and Ishikari mountains, increased precipitation due to the influence of mountain slopes