主办单位：中国气象局沈阳大气环境研究所
国际刊号：ISSN 1673-503X
国内刊号：CN 21-1531/P
气象与环境学报

气象与环境学报 ›› 2023, Vol. 39 ›› Issue (4): 138-146.doi: 10.3969/j.issn.1673-503X.2023.04.017

• 论文 • 上一篇    下一篇

2010—2021年辽宁省雷电分布及其与海拔高度的关系

程攀1,2,3(),刘成瀚4,蔡冬梅5,孙虹雨1,4,王月6,陈晟源7,陈传雷2,*(),张浩楠8,朱智晔9,姜东哲10   

  1. 1. 成都信息工程大学大气科学学院, 四川成都 610225
    2. 辽宁省气象灾害监测预警中心, 辽宁沈阳 110166
    3. 东北冷涡研究重点开放实验室, 辽宁沈阳 110166
    4. 辽宁省气象台, 辽宁沈阳 110166
    5. 大连市气象局, 辽宁大连 116001
    6. 沈阳市气象局, 辽宁沈阳 110168
    7. 阜新市气象台, 辽宁阜新 123000
    8. 丹东市气象台, 辽宁丹东 118000
    9. 东港市气象局, 辽宁东港 118300
    10. 凤城市气象局, 辽宁凤城 118100
  • 收稿日期:2022-06-29 出版日期:2023-08-28 发布日期:2023-09-23
  • 通讯作者: 陈传雷 E-mail:lnqx_chengpan@sina.com;ln_ccl@163.com
  • 作者简介:程攀, 男, 1990年生, 工程师, 主要从事短临预报预警技术研究, E-mail: lnqx_chengpan@sina.com
  • 基金资助:
    辽宁省气象局科研课题(ZD202219);辽宁省气象局科研课题(ZD202252)

Analysis of lightning distribution and its relationship with altitude in Liaoning province from 2010 to 2021

Pan CHENG1,2,3(),Chenghan LIU4,Dongmei CAI5,Hongyu SUN1,4,Yue WANG6,Shengyuan CHEN7,Chuanlei CHEN2,*(),Haonan ZHANG8,Zhiye ZHU9,Dongzhe JIANG10   

  1. 1. College of Atmospheric Sciences, Chengdu University of Information Technology, Chengdu 610225, China
    2. Liaoning Meteorological Disaster Monitoring and Early Warning Centre, Shenyang 110166, China
    3. Key Opening Laboratory for Northeast China Cold Vortex Research, Shenyang 110166, China
    4. Shenyang Central Meteorological Observation, Shenyang 110166, China
    5. Dalian Meteorological Service, Dalian 116001, China
    6. Shenyang Meteorological Service, Shenyang 110168, China
    7. Fuxin Meleorological Observatory, Fuxin 123000, China
    8. Dandong Meteorological Observatory, Dandong 118000, China
    9. Donggang Meteorological Service, Donggang 118300, China
    10. Fengcheng Meteorological Service, Fengcheng 118100, China
  • Received:2022-06-29 Online:2023-08-28 Published:2023-09-23
  • Contact: Chuanlei CHEN E-mail:lnqx_chengpan@sina.com;ln_ccl@163.com

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摘要：

利用2010—2021年辽宁省闪电定位资料，应用统计分析方法结合空间自然断点分级法，分析辽宁省雷电密度、雷电流幅值、雷电强度等雷电分布特征，及其与海拔高度的关系。结果表明：辽宁省夏季雷电流幅值分布最为集中，但正闪分布比例最小，冬季白天的雷电流幅值明显大于夜间。除8月外，其他月份白天的雷电频次几乎均多于夜间。正闪回击密度辽宁西部地区较大，正负闪回击密度总体随海拔高度升高而减小，负闪回击密度减小速度较快。正闪幅值辽宁西部地区最大，正闪幅值随海拔升高呈减小趋势，负闪幅值总体呈增大趋势。正闪强度高值区主要分布在辽宁中部和西部，负闪强度高值区主要集中在辽河流域两侧。41°N剖面的正闪回击密度辽宁西部地区远大于东部地区，负闪回击密度辽宁西部丘陵地区明显低于辽宁中部地区；负闪幅值与海拔高度变化在辽西的丘陵地带一致性更强；正闪强度在辽宁西部最大，东部地区正闪强度最小，辽河平原东部迎风坡地区负闪强度最大。

关键词: 闪电定位, 雷电密度, 雷电流幅值, 雷电强度

Abstract:

Lightning distribution characteristics in Liaoning province such as intensity, density and lightning current amplitude, and their relationship with the altitude were analyzed using the lightning location data in Liaoning province from 2010 to 2021, combined with space natural breakpoint classification method.The results show that the amplitude distribution of lightning current in Liaoning province is concentrated in summer, and the proportion of positive lightning distribution is the lowest.The amplitude of lightning current in winter is significantly higher at daytime than that at night.Except for August, the lightning frequency in other months is usually higher at daytime than that at night.In western Liaoning, the positive and negative lightning density is generally large, and the positive and negative lightning density decreases with the increase of altitude, and the negative lightning density decreases faster than positive lightning.The amplitude of positive lightning is the highest in western Liaoning province, and the amplitude of positive lightning decreases with the increase of altitude, while the amplitude of negative lightning generally increases with the increase of altitude.The high value area of positive lightning intensity is mainly distributed in the middle and west of Liaoning province, and the high value area of negative lightning intensity is mainly concentrated on both sides of Liaohe River Basin, with the strongest distribution in the east of Liaoning province.On the profile of 41°N, the positive flash density in western Liaoning province is much higher than that in Eastern Liaoning province, and the negative flash density in hilly area of western Liaoning province is significantly lower than that in Liaohe plain in central Liaoning province.In the hilly region of the western Liaoning province, the amplitude change of negative lightning is consistent with the change of altitude.The intensity of positive lightning is the highest in western Liaoning province, the lowest in Eastern Liaoning province, and the intensity of negative lightning is the strongest in the windward slope area in the east of Liaohe plain.

Key words: Lightning location, Lightning density, Lightning current amplitude, Lightning intensity

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