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题名: Global lightning activities and their regional differences observed from the satellite
其他题名: 卫星观测到的全球闪电活动及其地域差异
作者: Qie, XS; Zhou, YJ; Yuan, T(袁铁)
收录类别: SCIE ; CSCD
出版日期: 2003-11
刊名: CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
卷号: 46, 期号:6, 页码:743-+
期刊主办单位: 中国地球物理学会 ; 中国科学院地质与地球物理研究所
出版者: SCIENCE CHINA PRESS
出版地: BEIJING
中文摘要: 闪电活动在时间和空间尺度上都有很大的可变性 .本文利用热带降水测量计划 (TRMM)卫星上携带的闪电探测系统获取的闪电定位资料首次对一些典型地区的闪电活动进行了对比分析 .研究发现不同地区的闪电活动无论在闪电频数或放电强度方面都有很大的差别 ,海洋上的闪电活动频数与陆地上的闪电活动频数可相差几十倍 ;不同地区闪电活动的多少不仅取决于该地雷暴日数的多少 ,更重要的还取决于该地每次雷暴过程闪电频数的多少 ;不同地区的闪电放电强度有随闪电频数增加而减小的趋势 .进一步研究还表明 ,不同地区闪电光辐射能的不同可以用对流最大不稳定能量 (ECAPE)来解释 ,闪电放电强度与ECAPE之间存在非常好的线性...
英文摘要: The lightning activity changes greatly in temporal and spatial scales. We use the data from the lightning imaging sensor, boarded on the Tropical Rainfall Measurement Mission (TRMM) satellite, to study the lightning activities in several typical regions in the world. It is found that great differences exist in various regions for both the flash rate and flash intensity. The flash rate on the ocean is tens to hundred times smaller than that on the continent. The number difference of lightning activities in different regions is caused by not only the thunderstorm number but also the flash rate in an individual thunderstorm. The discharge intensity shows a decreasing tendency with the increase of flash number in different regions. Further studies show that the difference of flash optical radiance between different regions can be interpreted by the local Convective Available Potential Energy ( E-CAPE) - The optical radiance is linearly related to the E-CAPE value for different regions, but no obviously correlation is found between the flash frequency and the E-CAPE value.
关键词: lightning activity ; TRMM satellite ; lightning imaging sensor ; regional differences ; 闪电活动 ; TRMM卫星 ; 闪电探测器 ; 地域差异
作者部门: Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China ; Lanzhou Univ, Lanzhou 730000, Peoples R China
通讯作者: Qie, XS (reprint author), Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China.
学科分类: Geochemistry & Geophysics
文章类型: Article
所属项目编号: 中国科学院资源环境领域知识创新工程重要方向项目(KZCX2201) ; 国家自然科学基金委“十五”重点项目(40135010)
所属项目名称: 国家自然科学基金项目
项目资助者: NSFC
语种: 中文
ISSN号: 0001-5733
WOS记录号: WOS:000186813300004
CSCD记录号: CSCD:1246175
IR记录号: CNKI:0022106
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/126817
Appears in Collections:大气科学学院_期刊论文

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Recommended Citation:
Qie, XS,Zhou, YJ,Yuan, T. Global lightning activities and their regional differences observed from the satellite[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2003,46(6):743-+.
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