大连市雷暴日时空分布非一致性特征分析  

Non-consistency of Spatiotemporal Distribution of Annual Thunderstorm Days in Dalian City

作　　者：邹善勇[1] 王淑一[1] 王洪祥[1] 满永恒 

机构地区：[1]辽宁省大连市气象局,辽宁大连116001

出　　处：《现代农业科技》2016年第7期233-235,共3页Modern Agricultural Science and Technology

基　　金：大连市气象局科技项目(DLQK201519)

摘　　要：利用大连市气象局资料档案室提供的8个观测台站1971—2013年雷暴日数统计资料,对大连市境内发生雷暴的时间和空间分布非一致性特征进行了数理统计分析。结果表明:各地区平均雷暴日年际变化趋势不尽相同,全市平均雷暴日总体呈现下降趋势,下降的速度约为每10年1.2 d。大连各地区雷暴日标准差和平均雷暴日在时间上的分布呈现明显的正相关特性。大连市所有地区雷暴日的相对偏度系数和峰度系数在时间和空间上具有明显的年际变化特征,呈偏态分布。雷暴日分布有明显的地域特征,连全市出现2个雷暴高发区为庄河沿河地区以及瓦房店和普兰店交界的地带,旅顺及市区相对偏弱。Using the lighting disaster data from 8 observation station in Dalian City during 1971-2013 ,the spatial and temporal non-consistency of thunderstorm in the province was analyzed.The results showed that the thunderstorm days had an obvious decreasing trend ,the speed was 1.2 d per 10 years.There were visible correlation between mean thunderstorm days and its standardized variance.The skewness and esharpness coefficients of thunderstorm days among stations,they were visible correlation between mean thunderstorm days and its standardized variance.Along the coast of Zhuanghe River and border area of Pulandian and Wafangdian were the srongest center of lightning density,the lowest level were Lvshun and downtown area.

关 键 词：雷暴日 时空分布 非一致性 指标 辽宁大连 

分 类 号：P446[天文地球—大气科学及气象学]