[ Objective] The research aimed to analyze climatic characteristics of the rainstorm in Xianyang in recent 50 years. [Method] By using precipitation observation data at 11 meteorological stations in Xianyang from 1960...[ Objective] The research aimed to analyze climatic characteristics of the rainstorm in Xianyang in recent 50 years. [Method] By using precipitation observation data at 11 meteorological stations in Xianyang from 1960 to 2009, climatic characteristics of the rainstorm in Xianyang were analyzed. [ Result] Annual occurrence frequencies of the rainstorms in each county （city and district） of Xianyang were all less than 1. Number of the rainstorm day was the most in Wugong and the fewest in Qindu station. Interannual variation of the rainstorm was big, and presented less-more- less-more tendency. Rainstorm appeared from April to October, and was the most during July -August. Heavy rainstorm appeared from May to September. Rainstorm had short duration and big intensity, with nocturnal majority. Regional rainstorm in Xianyang occupied 77% and was the most. Rainstorm mainly occurred in single day, and occurrence probability of the continuous rainstorm was very low. [ Conclusion] The research laid foundations for doing this kind of weather forecast well, going after advantages and avoiding disadvantages, preventing and reducing natural disasters.展开更多
文摘[ Objective] The research aimed to analyze climatic characteristics of the rainstorm in Xianyang in recent 50 years. [Method] By using precipitation observation data at 11 meteorological stations in Xianyang from 1960 to 2009, climatic characteristics of the rainstorm in Xianyang were analyzed. [ Result] Annual occurrence frequencies of the rainstorms in each county （city and district） of Xianyang were all less than 1. Number of the rainstorm day was the most in Wugong and the fewest in Qindu station. Interannual variation of the rainstorm was big, and presented less-more- less-more tendency. Rainstorm appeared from April to October, and was the most during July -August. Heavy rainstorm appeared from May to September. Rainstorm had short duration and big intensity, with nocturnal majority. Regional rainstorm in Xianyang occupied 77% and was the most. Rainstorm mainly occurred in single day, and occurrence probability of the continuous rainstorm was very low. [ Conclusion] The research laid foundations for doing this kind of weather forecast well, going after advantages and avoiding disadvantages, preventing and reducing natural disasters.
