| 摘要: |
| 【目的】黔中地区于 2020 年初建成大气电场监测组网，为了解该地区大气电场特征，探寻大气电场在雷电预警 中的指示意义。【方法】运用黔中地区 2020 年大气电场仪监测资料和地闪观测资料，分析黔中地区晴天和雷暴天的大气电场 特征及其在雷电预警中的应用。【结果】黔中地区晴天大气电场强度在白天波动更大，在 12—18 时达到峰值，而在 01—06 时 降至谷值；雷暴天气大气电场报警与地闪活动无论在时间分布还是空间分布上，均具有较好的对应关系；雷电天气电场报警 日变化特征明显，呈单峰单谷型，峰值出现在 17 时—次日 04 时，谷值出现在 10—14 时；大量个例分析发现，大气电场对雷电 的报警提前量为 1 ~ 26 min , 平均约 8 min;监测组网后的大气电场变化对雷电移动路径预测有一定的指示意义。【结论】研究 结果为雷电预警提供了重要的参考，也为下一步构建雷电预警模型奠定基础。 |
| 关键词: 大气电场特征；雷电预警；路径预警 |
| DOI： |
| 投稿时间：2023-11-13修订日期：2024-10-08 |
| 基金项目:贵州省科技计划项目（黔科合支撑〔2020〕4Y054 号） |
|
| Characteristics of Atmospheric Electric Field in Central Guizhou and Its Application in Lightning Warning |
| YUAN Chen,TAO Yong,XIA Xiaoling,WU Changhang,ZENG Liping |
| (Guizhou New Meteorological Technology Co Ltd) |
| Abstract: |
| The monitoring network of atmospheric electric field was built in central Guizhou in early 2020 . In order to understand the characteristics of atmospheric electric field in this region and explore the indicating significance of atmospheric electric field in lightning early warning , based on the data collected from atmospheric electric field instrument and lightning observation data in central Guizhou in 2020 , we investigate the characteristics of atmospheric electric field in sunny and thunderstorm days in central Guizhou and its application in lightning warning in this paper. The results show that the atmospheric electric field intensity in the clear days in central Guizhou fluctuates more during the daytime , with the peak values seen from 12 ∶00 to 18 ∶00 and the valley values from 01 ∶00 to 06 ∶00 . In view of thunderstorm weather , there is a good correspondence between electric field alarms and cloud-to-ground lightning activities in central Guizhou in both temporal distribution and spatial distribution . Diurnal variation characteristics of electric field alarm in lightning weather are obvious , showing a single peak and single valley pattern . The peak values appear from 17 ∶00 to 04 ∶00 the next day , and the valley values from 10 ∶00 to 14 ∶00 . Analysis of a large number of cases reveals that the alarm lead time of atmospheric electric field to lightning is 1 ~ 26 min , with an average of about 8 min . Monitoring the changes of atmospheric electric field after networking is of a certain indicating significance for predicting moving tracks of lightning. The above research results could be an important reference for lightning warning , and also lay a foundation for building a lightning warning model . |
| Key words: characteristics of atmospheric electric field; lightning warning; warning of thunderstorm track |
