基于闪电定位系统的海南岛闪电活动特征分析
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摘要
利用ADTD-2C型闪电定位探测系统监测的2014—2015年海南岛闪电信息,通过数理统计等方法,分析和研究了海南岛闪电的时空分布规律和活动特征,结果表明:ADTD-2C型闪电定位系统能够全面监测海南岛的闪电信息,闪电信息能够有效反映海南岛的闪电活动特征.海南岛闪电频数具有"单峰"特征,全年各月均有发生闪电的记录,4~11月份是海南岛发生闪电的主要月份.闪电发生时段较为集中,主要是从午后开始,至傍晚达到最高峰.海南岛负地闪频数远大于正地闪频数,且负地闪强度显著高于正地闪强度.正地闪的雷电流幅值主要集中在6 k A~30 k A,负地闪的强度主要集中在-60 k A~-7 k A.海南岛北部的闪电密度要明显高于南部地区,北部和南部闪电强度相对较大,西部和中部地区闪电强度相对较小.
In the report,ADTD-2C type lightning location system was used to monitor the lighting information in Hainan from 2014 to 2015,the mathematical statistics analysis methods were used to analyze the lightning activity characteristics. The results showed that ADTD-2C type lightning location system can monitor the lightning information comprehensively,and which can reflect the lightning activity characteristics in Hainan effectively. The frequency of lightning in Hainan has a feature of single-peak. The lightning occurs every month throughout the year in Hainan and concentrates from April to November. The period of time of lighting mainly focus from the afternoon and pre-evening,at which there is a maximum value. The frequency and intensity of negative cloudground lightning in Hainan were higher than that of positive lightning. The lightning intensity of positive cloudground lightning was mainly 6k A ~ 30 k A and that of negative cloud-ground lightning was-60 k A ~-7k A. The density of the lightning in the northern region of Hainan was higher than that in the southern of Hainan. The lightning intensity in the northern and southern region of Hainan was higher than that in the western and central regions of Hainan.
In the report,ADTD-2C type lightning location system was used to monitor the lighting information in Hainan from 2014 to 2015,the mathematical statistics analysis methods were used to analyze the lightning activity characteristics. The results showed that ADTD-2C type lightning location system can monitor the lightning information comprehensively,and which can reflect the lightning activity characteristics in Hainan effectively. The frequency of lightning in Hainan has a feature of single-peak. The lightning occurs every month throughout the year in Hainan and concentrates from April to November. The period of time of lighting mainly focus from the afternoon and pre-evening,at which there is a maximum value. The frequency and intensity of negative cloudground lightning in Hainan were higher than that of positive lightning. The lightning intensity of positive cloudground lightning was mainly 6k A ~ 30 k A and that of negative cloud-ground lightning was-60 k A ~-7k A. The density of the lightning in the northern region of Hainan was higher than that in the southern of Hainan. The lightning intensity in the northern and southern region of Hainan was higher than that in the western and central regions of Hainan.
引文
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[15]陈绍东,王孝波,黄智慧,等.海南文昌地区夏季雷暴地面电场观测及分析[J].热带气象学报,2012,28(2):265-270.
[2]栾健,李家启,林中冠,等.基于闪电定位系统和人工观测的雷电关注度对比分析[J].西南大学学报(自然科学版),2014,36(9):163-169.
[3]卜俊伟.基于闪电定位资料的四川省雷电风险区划分析[J].高原山地气象研究,2014,34(2):86-91.
[4]林卓宏,梁敏妍,于东海,等.基于闪电监测定位仪资料的江门地区闪电特征分析[J].热带气象学报,2013,29(3):524-528.
[5]张坚,袁松,姚叶青.江淮地区雷暴的闪电定位系统与人工观测的一致性分析[J].暴雨灾害,2015,34(3):286-292.
[6]姚叶青,袁松,张义军,等.利用闪电定位和雷达资料进行雷电临近预报方法研究[J].热带气象学报,2011,27(6):905-911.
[7]冯桂力,陈文选,刘诗军,等.山东地区闪电的特征分析[J].应用气象学报,2002,13(3):347-355.
[8]Taylor W L.A VHF technique for space time mapping of lightning discharge progresses[J].J Geophys Res,1978,83:3575-3583.
[9]王义耕,陈渭民,刘洁.TRMM卫星观测到的华南地区的闪电时空分布特征[J].热带气象学报,2009,25(2):227-233.
[10]易燕明,杨兆礼,万齐林,等.近50年广东省闪电、雷暴时空变化特征的研究[J].热带气象学报,2006,22(5):539-546.
[11]姜勇.基于ADTD监测网络2012年云南省地闪特征分析[J].云南大学学报(自然科学版),2013,35(S2):315-322.
[12]邓德文,汪如良.基于ADTD数据的江西省雷电活动特征分析[J].气象与减灾研究,2016,39(1):63-69.
[13]李家启,申双和,夏佰成,等.基于ADTD系统的闪电频次分布特征分析[J].热带气象学报,2011,27(5):710-716.
[14]郭冬艳,翟盘茂,姜涛,等.海南夏季雷暴时空分布特征及成因[J].气象科技,2011,39(5):562-569.
[15]陈绍东,王孝波,黄智慧,等.海南文昌地区夏季雷暴地面电场观测及分析[J].热带气象学报,2012,28(2):265-270.