2020 Volume 76 Issue 2 Pages I_193-I_198
In September 2014, during Ishikari and Iburi heavy rainfall, Line-Shaped Rain Bands was occured. The relationship between the three dimensional wind field calculated using the three Doppler radars and precipitation intensity was shown. Heavy rains show typical back-building characteristics, with new precipitation cells being generated one after another and propagating northeast.
In the lower levels, the warm and humid air masses from the southeast converged and caused an upward motion at the upper layer. When the upward airflow grew to the vertical vortex structure, the precipitation intensity was stronger. The relationship may provide a physical explanation for the back-building mechanism.
PROCEEDINGS OF HYDRAULIC ENGINEERING
