Flow control to disturb the training of storms for the prevention of flood and landslide risks

Localized torrential downpours over a period of several hours triggered by linear rainbands or so-called storm training often exceed the capacity of the infrastructure even in developed countries, causing severe damage. Even though it will not be feasible to remove those rainband systems entirely, it would be possible to diffuse the centralization of the precipitation zone to limit the maximum precipitation accumulation within the manageable amount.
This study, therefore, aims to establish a methodology to control the storm training, more specifically, to diffuse the centralization of its precipitation zone. The storm training over Hiroshima, Japan in August 2014 has been represented numerically by using a multiscale model named the Multi-scale Simulator for the Geoenvironment (MSSG). Then, we have conducted sensitivity analysis of the precipitation area and intensity on several controls. We have concluded that storm training can be controlled if water vapor amount in the lower layer of the atmosphere is controlled.