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基于卫星资料的全球闪电定位系统探测效率评估
引用本文:邓雨荣,李涵,朱时阳,秦微,苏建峰.基于卫星资料的全球闪电定位系统探测效率评估[J].气象科学,2015,35(5):599-604.
作者姓名:邓雨荣  李涵  朱时阳  秦微  苏建峰
作者单位:广西电网公司电力科学研究院, 南宁 530023,武汉大学电气工程学院, 武汉 430072,广西电网公司电力科学研究院, 南宁 530023,南京信息工程大学大气物理学院, 南京 210044,南京信息工程大学大气物理学院, 南京 210044
基金项目:国家自然科学基金青年科学基金项目(51307125)
摘    要:基于2005-2010年间OTD/LIS闪电观测数据,评估了同期全球闪电定位系统(World Wide Lightning Location Network,WWLLN)的平均探测效率,分别就全球和三大闪电高发区的闪电活动特征,对WWLLN的探测效率进行了讨论分析。OTD/LIS探测得到的全球闪电密度最高值在非洲地区,为160.7km-2·a-1;而WWLLN探测到的闪电密度的最高值在北美洲为15.7km-2·a-1。由于WWLLN探测系统子站在全球布网不均匀,在全球不同区域,WWLLN的探测效率不同。在东南亚地区,WWLLN的探测效率为8.62%;在非洲地区,WWLLN的探测效率为1.86%;在南北美洲,WWLLN的探测效率为7.18%。除此之外,随着月份的变化,不同地区WWLLN的探测效率也不尽相同。如在东南亚,12月的探测效率最高为13.78%;非洲地区2月探测效率最高为2.49%;南北美洲地区,10月探测效率最高为8.44%。随着站点的逐年增多和定位方法的改进,WWLLN的探测效率也在不断提高。3大闪电高发区WWLLN的探测效率呈现明显的逐年增高。

关 键 词:闪电  全球闪电定位系统  OTD/LIS  探测效率
收稿时间:2013/11/10 0:00:00
修稿时间:2014/5/14 0:00:00

Detection efficiency of the WWLLN based on OTD/LIS data
DENG Yurong,LI Han,ZHU Shiyang,QIN Wei and SU Jianfeng.Detection efficiency of the WWLLN based on OTD/LIS data[J].Scientia Meteorologica Sinica,2015,35(5):599-604.
Authors:DENG Yurong  LI Han  ZHU Shiyang  QIN Wei and SU Jianfeng
Institution:Institute of Power Science Research, Guangxi Power Grid Electric Company, Nanning 530023, China,School of Electrical Engineering, Wuhan University, Wuhan 430072, China,Institute of Power Science Research, Guangxi Power Grid Electric Company, Nanning 530023, China,College of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing 210044, China and College of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing 210044, China
Abstract:Based on the Optical Transient Detector/Lightning Imaging Sensor(OTD/LIS) data during 2005-2010, the average detection efficiency of the World Wide Lightning Location Network(WWLLN) is evaluated, mainly for the globe and the "three high lightning activities spots". The peak mean annual flash density of 160.7 km-2·a-1 is in the African region according to the OTD/LIS, while via the WWLLN data, the peak of 15.7 km-2·a-1 appears in the North American. Due to the inhomogeneous distribution of WWLLN sites, its detection efficiency in different regions is different. In Southeast Asia, South and North America and the African region, they are 8.62%,7.18% and 1.86, respectively. In addition, the detection effciency of the WWLLN also change with month. In Southeast Asia, the detection efficiency maintains the peak in December, amounting to 13.78%, in Africa, it is 2.49% in February, and in South and North America, it reaches 8.44% in October. With the increasing sites and improvement of location method, the WWLLN detection efficiency is also improving. The detection efficiency of WWLLN in three high lightning occurring areas increases annually.
Keywords:Lightning  WWLLN  OTD/LIS  Detection efficiency
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