遵义市暴雨气候特征分析

Climate characteristics of rainstorm in Zunyi City

利用遵义市13个气象观测站1961—2015年逐日暴雨资料,采用合成分析和Petitt方法研究了遵义市暴雨的气候特征。结果表明:遵义市暴雨发生有一定的阶段性,上世纪60、70年代较多,80、90年代较少。在1995年、2005年及2011年发生了突变,1995—2004年是暴雨发生最多的一个阶段,2010年后暴雨又处于多发期。暴雨发生有明显的区域性,市内有两个暴雨多发区域,一个在东南部(包括绥阳、湄潭、凤冈、余庆),暴雨中心在凤冈,另一暴雨多发区域为赤水。暴雨气候特征的分析结果对做好暴雨预测预警,加强暴雨灾害防御能力有一定参考作用。

The daily rainfall data of 13 meteorological stations in Zunyi City from 1961 to 2015 were analyzed. The climatic characteristics of Rainstorm in Zunyi city were studied by the method of synthetic analysis and Petin. The results show ： there was a certain stage of rainstorm in Zunyi, more in the last century 60, 70s ; 80, 90s less. A mutation occurred in 1995 and 2005 and 2010, 1995 -2004 years was the most rainstorm occurred in a stage; after 2010, the rainstorm was in a multiple period. The occurrence of rainstorm had obvious regional characteris- tics, the city had two rainstorm prone areas, one in the Southeast （including Suiyang, Meitan, Fenggang, Yu- qing） , rainstorm center in Fenggang; another rainstorm prone area in Chishui. The analysis result of the rainstorm climate feature was good to the rainstorm forecast warning, to strengthen the ability of rainstorm disaster defense had a certain reference.