|
|
|
| Feature analysis of atmospheric electric field of different weather processes in Lishui |
| Qiang Yuhua, Yang Lei, Jiang Yanmin, Bai Yunxia |
| Lishui Meteorological Bureau,Lishui 323000 |
|
|
|
|
Abstract Based on the data of atmospheric electric field,the weather processes of rainfall,snowfall and thunderstorm occurred in Lishui from 2017 to 2018 were compared by using the difference and wavelet analysis methods.It is found that the difference amplitude of thunderstorm is the largest in all processes.The difference value of thunderstorm occurrence period is one order of magnitude larger than that of rainy weather process,and more than one time larger than that of snowfall .After wavelet transform analysis,rainfall and snowfall are increased by one order of magnitude.After the transformation of rainfall and snow,the amplitude is lower than that of the original model,the fluctuation of wavelet signal becomes smooth,and the rapid jump of positive and negative poles no longer occurs.The small wave shape fluctuates smoothly without sudden jump.The wavelet transform signal shows active up and down wave fluctuation during the thunderstorm period,and the amplitude is significantly larger than that of rainfall and snowfall.
|
|
Received: 07 December 2020
|
|
|
|
|
|
| [1] |
Selezneva A N.Instrument for calibrating means of measuring electric field strength[J].Measurement Techniques,1983,26(10):850-852.
|
| [2] |
Zhang X P,Desai,M.D.Adaptive denoising based on SURE risk[J].IEEE Signal Processing Letters,2002,5(10):265-267.
|
| [3] |
陈渭民.雷电学原理[M].北京:气象出版社,2001.
|
| [4] |
孟青,吕伟涛,姚雯,等.地面电场资料在雷电预警技术中的应用[J].气象,2005,31(9):30-33.
|
| [5] |
高太长,黄子洋,张鹏,等.大气电场资料与雷达回波融合的一种方法[J].解放军理工大学学报(自然科学版),2006,7(3):302-306.
|
| [6] |
梅建娇,王超然.地面大气电场分析及雷电预警应用[J].气象水文海洋仪器,2017,34(2):108-112.
|
| [7] |
朱男男,宫全胜,易笑园.地面大气电场资料在强对流天气预报中的应用[J].气象科技,2010,38(4):424-426.
|
| [8] |
余晔,郄秀书,袁铁.雷暴云下地闪先导通道中的电荷分布[J].高原气象,2002,21(4):375-380.
|
|
|
|
2021, Vol. 38 
