首页 | 本学科首页   官方微博 | 高级检索  
     检索      

北京地区雷暴大风的天气—气候学特征研究
引用本文:秦丽,李耀东,高守亭.北京地区雷暴大风的天气—气候学特征研究[J].气候与环境研究,2006,11(6):754-762.
作者姓名:秦丽  李耀东  高守亭
作者单位:1. 空军气象中心,北京,100843;空军装备研究院航空气象研究所,北京,100085
2. 中国科学院大气物理研究所,北京,100029;空军装备研究院航空气象研究所,北京,100085
3. 中国科学院大气物理研究所,北京,100029
基金项目:国家自然科学基金项目40375016,海外杰出青年基金项目40428002
摘    要:依据北京近郊地区沙河、南苑和西郊3个测站15年(1990~2004年)的观测资料和常规探空资料,对北京地区局地雷暴大风发生的天气、气候特征和日变化特征进行了统计分析。研究从环流形势、探空结构和环境参数特征入手,分析了有利于北京地区产生雷暴大风的不稳定度指数和能量特征,得出在此期间最有利于雷暴大风产生的探空结构为:低层暖湿,中高层有干冷空气,不稳定度较大,风垂直切变较大。还探讨了一些对流参数,如最佳对流有效位能BCAPE、下沉对流有效位能DCAPE、风暴相对螺旋度SREH、大风指数WINDEX、风暴强度指数SSI、深厚对流指数DCI等对北京地区强对流天气发展潜势的指示意义。

关 键 词:雷暴大风  探空分析  不稳定度  对流参数
文章编号:1006-9585(2006)06-0754-09
收稿时间:09 23 2005 12:00AM
修稿时间:09 10 2006 12:00AM

The Synoptic and Climatic Characteristic Studies of Thunderstorm Winds in Beijing
QIN Li,LI Yao-Dong and GAO Shou-Ting.The Synoptic and Climatic Characteristic Studies of Thunderstorm Winds in Beijing[J].Climatic and Environmental Research,2006,11(6):754-762.
Authors:QIN Li  LI Yao-Dong and GAO Shou-Ting
Institution:1 Air force Meteorological Centre, Beijing 100843 ;2 Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029;3 Beijing Aviation Meteorological Institute, Beijing 100085
Abstract:Synoptic and climatic characteristic of thunderstorm winds in Beijing are studied by using the observational data and sounding data during 1990 to 2004. The obviously diurnal characteristics was showed to thunderstorm winds occurrence. The ambient circulation, sounding structure and convection parameters are studied to discover the most favorable condition for the occurrence of the thunderstorm wind in Beijing. The instability index and energy parameters are studied as well. It shows that warm and wet at low level, dry and cold at middle level, strong convective instability, and relative strong vertical wind sheer are favorable to thunderstorm wind occurrences. More convective parameters associated to strong storms are also studied, such as the best convective available potential energy (BCAPE), downdraft convective available potential energy (DCAPE), Storm-Relative Environmental Helicity (SREH), Wind Index (WINDEX), Storm Severity Index (SSI), Deep Convective Index (DCI) and so on, which are important to the potential development of the strong convection in Beijing.
Keywords:thunderstorm wind  sounding analysis  instability index  convection parameter
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《气候与环境研究》浏览原始摘要信息
点击此处可从《气候与环境研究》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号