冰雹云中闪电特征观测研究

李照荣; 付双喜; 李宝梓; 蒋林

冰雹云中闪电特征观测研究

1.
甘肃省人工影响天气办公室, 甘肃, 兰州, 730020;中国气象局兰州干旱气象研究所/甘肃省干旱气候变化与减灾重点实验室, 甘肃, 兰州, 730020
2.
甘肃省人工影响天气办公室, 甘肃, 兰州, 730020
3.
民航兰州空中交通管理中心, 甘肃, 兰州, 730087

基金项目: 科技部社会公益性研究课题"西北地区防雹消雹技术"(2002DIB10046);"闪电定位仪应用研究";"测雨雷达现场指挥作业研究"等资助

计量
- 文章访问数: 1156
- HTML全文浏览量: 0
- PDF下载量: 1226
- 被引次数: 0
出版历程
- 收稿日期: 2004-06-10
- 修回日期: 2004-11-01

OBSERVING STUDY LIGHTNING CHARACTERISTICS ON HAIL CLOUD

1.
Gansu Administration of Weather Modification, Lanzhou 730020, China;Key Laboratory of Arid Climatic Change and Reducting Disaster of Gansu Province/Lanzhou Institute of Arid Meteorology, Lanzhou 730020, China
2.
Gansu Administration of Weather Modification, Lanzhou 730020, China
3.
Lanzhou Air Traffic Administration Center of Civil Aviation, Lanzhou 730087, China

摘要

摘要: 通过对西北地区11次冰雹过程闪电定位仪和多普勒雷达观测资料的分析结果表明,闪电5 min频次分布呈现规律变化,在降雹前4～97 min出现频次大于20次的峰值,冰雹过程正地闪占总地闪比值在24.7%～40%之间;闪电密度最大中心区出现在降雹位置之前,闪电逐时空间分布标识出冰雹云的发展移动路径;闪电分布在雷达回波区,并不与雷达最强回波区对应,闪电频次、正地闪所占的比值和闪电时间序列分布,可能起到预警冰雹的作用。
- 闪电频次 /
- 闪电密度 /
- 预警冰雹
Abstract: Atmospheric lightning are closely linked to hail clouds.Composite data of lightning positioning and tracking and Doppler radar echoes in 11 hail processes occurring in northwest of China are analyzed,with the finding that the 5-min.lightning frequency is regularly distributed and there are hail processes exceeding 20 times 4～97 minutes ahead of hail occurrence and the rates of positive C-G lightning are between 24.7%～40%.The core of lightning density appears in front of the hail zone.Hourly spatial distribution lead to the revelation of the migratory route of hail clouds development.The distribution of lightning does not coincide with the area of the radar strongest echoes.The frequency of lightning,the ratio of positive C-G lightning and the time series distribution of lightning may be used as pre-warnings for hails.
- lightning frequency /
- lightning density /
- forecasting hail

HTML全文

参考文献(22)

[1]	COTTON W R,ANTHES R A.风暴和云动力学[M].叶家东,范蓓芬,程麟生,等译.北京:气象出版社,1993.607-619.
[2]	KEVIN R KNUPP,SIMON PAECH,STEVEN GOODMAN.Variation in cloud-to-ground lightning characteristics amongthree adjacent tornadic supercell storms over the Tennessee Valley Region[J].Monthly Weather Review,2003,131:172-188.
[3]	MACGORMAN DONALD R,BURGESS DONALD W.Positive cloud-to-ground lightning in tornadic storms andhailstorms[J].Monthly Weather Review,1994,122(8):1671-1697.
[4]	郄秀书,TOUMI R,周筠珺.青藏高原中部地区闪电活动特征及其对对流最大不稳定能量的响应[J].科学通报(简报),2003,48(1):87-90.
[5]	顾雷,陈露,陶祖钰,等.影响首都机场的一次雷暴过程的红外云图和闪电分析[J].高原气象,1995,25(11):198-203.
[6]	薛秋芳,孟青,葛润生,等.北京地区闪电活动及其与强对流天气的关系[J].气象,1991,17(2):15-19.
[7]	蔡晓云,宛霞,郭虎,等.北京地区闪电定位资料的应用分析[J].气象科技,2001(4):33-38.
[8]	黄彦彬,王振会.利用SD型闪电频数识别高原雷雨云和冰雹云[J].南京气象学院学报,2001,24(2):276-280.
[9]	冯桂力,边道相,刘洪鹏.冰雹云形成发展与闪电演变特征分析[J].气象,2002,27(3):33-37.
[10]	施望芝.金琪.郭施,等.湖北一次冰雹天气过程的落区诊断分析和预报[J].热带气象学报,2004,20(2):213-217.
[11]	陶善昌,周秀骥.闪电单站定位-仪器、方法及现场试验[J].科学通报,1992(21):1970-1973.
[12]	张义军,华贵义,言穆弘,等.对流和层状云系电活动、对流及降水特性的相关分析[J].高原气象,1995,14(4):396-405.
[13]	CAREY L D,RUTLEDGE S A,PETERSEN W A.The relationship between severe storm reports and cloud-to-groundlightning polarity in the Contiguous United States From 1989 to 1998[J].Monthly Weather Review,2003,13(17):1211-1228.
[14]	QIE Xiushu,GUO Changming,YAN Muhong,et al.Lightning data and study of thunderstorm nowcasting[J].ActaMeteorological Sinica,1993,7(2):244-256.
[15]	陈哲彰.冰雹与雷暴大风的云对地闪电特征[J].气象学报,1995,53(3):367-374.
[16]	BEASLEY,WILLIAM.Positive cloud-to-ground lightning observations[J].Journal of Geophysical Research,1985,90(D4):6131-6138.
[17]	郄秀书,余晔,王怀斌,等.中国内陆高原地闪特征的统计分析[J].高原气象,2001,20(4):395-401.
[18]	张义军,葛正谟,陈成品,等.青藏高原东部地区的大气电特征[J].高原气象,1998,17(2):136-140.
[19]	葛正谟,郭昌明,言穆弘,等.灾害性天气中的地闪特征[J].高原气象,1995,14(1):39-46.
[20]	张敏锋,刘欣生,张义军.广东地区雷电活动的气候分布特征[J].热带气象学报,2000,16(1):46-53.
[21]	CAREY L D,PETERSEN W A,RUTLEDGE S A.Evolution of cloud-to-ground lightning and storm structure in the spencer,South Dakota,Tornadic Supercell of 30 May 1998[J].Monthly Weather Review,2003,131(8):1811-1831.
[22]	SEITY Y,SOULA S,TABARY P,et al.The convective storm system during IOP 2a of MAP:Cloud-to-ground lightningflash production in relation to dynamics and microphysics[J].Quarterly Journal of the Royal Meteorological Society,2003,129 (588):523-542.