摘要
利用NCEP模式再分析资料、新一代多普勒天气雷达（CINRAD／CC）、FY-2E卫星实时云图和闪电定位仪等资料，结合大理特殊的地理环境，对2013年6月23日发生在大理的一次雷暴致灾天气过程进行了综合分析，并提出了防御对策。结果表明：此次天气过程是在西北移动的热带风暴背景下产生的，高温高湿、强烈的热力不稳定、弱的不稳定能量积累和弱的低层触发为雷暴天气的形成提供了有利但不完全确定的环境条件。多普勒雷达和卫星资料上显示雷暴灾害区上空白东向西移动的对流单体，雷暴灾害区共发生雷暴79次，其中，16：40～17：00雷暴灾害发生时方圆5km范围内共有地闪26次，对应的1小时降雨量达14．1mm。雷暴出现时活动人员在山坡坡顶跑动，多山的环境使得活动人员难以快速采取防护措施，灾害不可避免地发生了。据此，提出了应对措施，避免同类事故发生。
By adopting the NCEP reanalysis data, the Doppler Weather Radar （CINRAD/CC） data, the Satel- lite data of FY -2E and the lightning locator data, a thunderstorm disaster happened in Dali region on June 23 2013 was comprehensively analyzed by considering the characteristics of mountainous and defense strategies were given. The thunderstorm formed under the background of a northwest moving tropical depression. The results show that the high surface temperature, moderate moisture content, moderate CAPE, very unstable layer structure and the weak surface trigger, all are favorable for thunderstorms but not for severe convective weather. West moving convective cells are indicated by radar and satellite data over the disaster area. During the period of damage, 26 cloud to ground lightning observed within 5 km of the disaster area during 1640 -1700 LST （local standard time）, and a maximum hourly rainfall of 14. 1 mm observed. Outdoor activities are being carried out during the happening of lightning and the mountainous environment makes it difficult to take defensive measures effectively, and damage unavoidably happened. Based on this thunderstorm damage, the defense strategies are given.
作者
杨艳军
徐安伦
高月忠
付志嘉
YANG Yah -jun XU An -lun GAO Yue -zhong FU Zhi -jia(Dali National Climate Observatory, Dali 671003, Yunnan, China Meteorological Bureau of Dali, Dali 671003, Yunnan, China State Meteorological Bureau of Dali, Dali 671000, Yunnan, China)
出处
《云南地理环境研究》
2016年第3期72-76,F0002,F0003,共7页
Yunnan Geographic Environment Research
关键词
大理
雷暴灾害
天气分析
Dali region
thunderstorm disaster
weather analysis
