昆明地区夏季冰雹云多普勒雷达定量判别指标
Quantitative Identification Index of Doppler Radar of Hail Cloud in Kunming Area
王廷东 1段玮 2方夏馨 1卡蓉燕1
作者信息
- 1. 云南省昆明市人工影响天气中心,云南昆明650500
- 2. 云南气象科学研究所,云南昆明650034
- 折叠
摘要
利用昆明市探空资料、多普勒天气雷达资料、地面观测资料,对2010-2014年昆明地区19次典型降雹天气过程进行综合分析,重点对冰雹云发展初期的雷达判识指标进行研究,对原有的冰雹云发展阶段雷达判识指标进行更新、细化、完善,总结得出基于雷达资料的人工防雹作业判识新指标,并利用2015年发生的冰雹天气过程检验了指标.结果表明,昆明防雹作业指标为组合反射率回波强度达45 dBZ、强回波H.dBZ中心强度跃增≥5 dBZ、回波顶高≥8 km、强回波中心顶高＞6km.利用强回渡H45 dBZ中心顶高＞6km和强中心强度跃增≥5 dBZ能很好地识别冰雹云,但提前预警时间太短,预警作用有限.
Abstract
Using Kunming sounding data,Doppler radar data and ground observation data,the 19 typical hail process in Kunming area during 2010-2014 was comprehensively analyzed,focus on radar identification index in the early stage of hail cloud development research,the radar identification index of original hail cloud development phase was updated,refined and perfect,the identification new index of artificial hail suppression based on the radar data was summarized,and the index was tested using the hail weather process occurred in 2015.The results showed that the hail suppression index of Kunming were composite reflectivity of echo intensity reaches 45 dBZ,H45 dBz strong echo center strength jumped more than 5 dBZ,the height of echo top more than 8 km and strong echo center top more than 6 km.The use of strong echo H45 dBZ center top height more than 6 km and strong central strength jumped more than 5 dBZ can well identify hail cloud,but time of early warning was too short,the warning function was limited.
关键词
冰雹云/多普勒雷达/人工防雹作业/识别指标/昆明地区Key words
Hail cloud/Doppler radar/Artificial hail suppression/Identification index/Kunming area引用本文复制引用
出版年
2016
国家科技期刊平台
NSTL
维普
万方数据