内蒙古地区雷电易发区划分析  

Analysis on the Regionalization of LightningFrequencyin Inner Mongolia

作　　者：宋昊泽 刘晓东[1] 侯越[1] 刘旭洋 Song Haoze;Liu Xiaodong;Hou Yue;Liu Xuyang(Inner Mongolia Lightning Warning Protection Center,Inner Mongolia Hohhot 010051)

机构地区：[1]内蒙古雷电预警防护中心,内蒙古呼和浩特010051

出　　处：《内蒙古气象》2018年第2期36-39,共4页Meteorology Journal of Inner Mongolia

摘　　要：基于内蒙古气象部门2014—2016年的闪电定位资料和1981—2010年的雷暴日站点资料,运用ArcGIS软件和数理统计等方法对内蒙古自治区及6个典型盟市的雷电易发区划特征进行了分析。结果表明:全区雷电活动发生频率的总体趋势为中部地区最高,西部地区最低,东部地区中等偏高;呼和浩特市属于雷电活动高易发区,全市的大部分地区均为高易发区;乌兰察布市属于高易发区,整体趋势呈现为南高北低;鄂尔多斯市属于雷电活动较高易发区,雷电活动的频繁程度整体呈现西低东高的特征;阿拉善盟属于一般易发区,雷电活动的频繁程度全区最低,整体趋势为西低东高;呼伦贝尔市共包含4种类型的易发区,绝大部分地区为较高易发区;赤峰市位于内蒙古自治区的东南部,属于高易发区,雷电活动随纬度整体呈现南高北低。Based on the cloud to ground （CG） lightning data collected by location lightning detection net-work for 2014-2016 and the daily thunderstorm data for 1981-2010, the regionalization of lightning frequency in Inner Mongolia and in its typical six cities are investigated by using the software of ArcGIS and mathematical statistics method. The results show that, as a whole, the amplitude of lightning activity frequency （LAF） is highest over the central region, while the lowest value appears over the western areas, and the eastern region exhibits relatively higher value than the average. Intense thunder and lightning activity appears over Hohhot where most areas are the high prone area. Ulanqab is also defined as the high prone area with higher LAF over the southern part and lower LAF over the northern part. Ordos is another typical high prone area, LAF increased with the longitude. Alxa League is the general prone area as a whole, with the lowest LAF over the entire autonomous region, and larger LAF are observed over the western part than the eastern part. Hulunbuir is consist of 4 types of vulnerable areas, and most regions are relatively higher prone areas. Chifeng, which is located in the southeastern of Inner Mongolia Autonomous Region, is the high prone area, and LAF decreases with latitude.

关 键 词：雷电易发区划 地闪密度 地闪强度 雷暴日 

分 类 号：P427.32[天文地球—大气科学及气象学]