The purpose of this study is to analyze the characteristics of precipitation associated with the attribute of extratropical cyclone in Korea. From now on, extratropical cyclone is called cyclone in short. The principal data used in this study are dail...
The purpose of this study is to analyze the characteristics of precipitation associated with the attribute of extratropical cyclone in Korea. From now on, extratropical cyclone is called cyclone in short. The principal data used in this study are daily precipitation obtained from 60 weather stations of the Korea Meteorological Service during the ten years(1981∼1990), and weather charts published by the Japan Meteorological Agency.
The results obtained in this study are summarized as follows:
(1) The amount of precipitation by the Central China Low accounts for 50 percent on an average of the total cyclonic precipitation. In the spatial distribution , the precipitation in the middle-west areas are influenced by the Central China Low and the North China Low, and the precipitation in the southern areas are influenced by the Central China Low and the Taiwan Low. Especially, The Taiwan Low appears rarely in Korea, but its appearance causes heavy rain.
(2) When the cyclone passes through the southern area, the precipitation probability is highest and the precipitation intensity is very strong. This is considered the reason why the whole country is influenced by the cyclone. Cyclones passing through the South Sea cause frequent precipitation in the southern area and those passing through the middle and the northern area often cause precipitation in the middle area.
(3) When the cyclone moves slowly and its central pressure is become higher, and the precipitation probability is high and the amount of precipitation is large. It is because the pressure energy changes into the precipitation energy. The track of cyclone and topography cause difference in the amount of precipitation amount according to the regions.