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对流云人工增雨潜力初步探讨
引用本文:黄岩彬,陈秋萍.对流云人工增雨潜力初步探讨[J].气象科技,2005(Z1).
作者姓名:黄岩彬  陈秋萍
作者单位:福建省古田县气象局 古田352200(黄岩彬),福建省建阳雷达站 建阳354200(陈秋萍)
基金项目:科技部2001BA6101-01、05专题,福建省中尺度灾害性天气预警系统三期工程,福建省宁德市科技局共同资助
摘    要:利用在古田水库建立的以新一代天气雷达为主,包括稠密地面雨量站网等人工增雨综合监测技术系统,结合古田水库“蓄水型”人工增雨外场试验研究对流云降水量、降水效率和人工增雨潜力。研究表明:①试验区对流云自然降水效率平均约为1222×103m3,最大为1626×103m3;②人工催化后18~36 min,平均降水效率提高6个百分点,每次作业降水量增加395.5×103m3;相对增加28.36%,最大分别增加10个百分点,为972×103m3和59.78%;③每次作业水库入库流量增加143×103m3;④综合12年(1975~1986)古田人工增雨试验和2004年古田水库“蓄水型”人工增雨效果分析,可以认为对流云云内含水量大,有明显的增雨潜力。

关 键 词:对流云  降水量  降水效率  增雨潜力

Preliminary Study of Seeding Potentials of Convective Clouds
Huang Yanbin Chen Qiuping.Preliminary Study of Seeding Potentials of Convective Clouds[J].Meteorological Science and Technology,2005(Z1).
Authors:Huang Yanbin Chen Qiuping
Institution:Huang Yanbin~1 Chen Qiuping~2
Abstract:Convective precipitation,its efficiency and the seeding potentials of convective clouds are examined by using the measurements from the comprehensive monitoring system for precipitation enhancement in Gutian Reservoir,in which the CINRAD Doppler weather radar is integrated with the dense network of rain gauges,as well as the data from the field experiments of rainfall enhancement for impounding water in Gutian Reservoir.The results are as follows: the mean convective precipitation efficiency in the experimental area is about 33%,with a maximum of 39%;the mean precipitation efficiency increased by 6% in 18-36 minutes after cloud seeding,with a maximum increase rate of 10%;there was a 28.36% increase in rainfall on average after the seeding operations,with a maximum increase rate of 59.78%.Based on the precipitation enhancement experiments in Gutian from 1975 to 1986 in conjunction with the effectiveness analyses of precipitation enhancement for increasing the pondage of Gutian Reservoir in 2004,it can be concluded that convective clouds contain abundant cloud water and has high seeding potentials.
Keywords:convective cloud  precipitation  precipitation efficiency  seeding potential
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