Numerical studies on the heavy rainfall associated with Low-Level Jet and moisture flux

摘要

This research diagnosed qualitatively the role of LLJ and south-westly moisture flux on a heavy rainfall using numerical simulation. Here is the result as below. 1) LLJ is very important factor related to the heavy rainfall. 2) There is a tendency that the location of LLJ does not have big effect on the strength of the rainfall. 3) The area of precipitation is affected by the location of LLJ than by the moisture flux of air to the mountain. 4) In the case of revising the underestimation of topography in numerical model, the area of precipitation expands and there is precipitation around some area not being related to mountain.