雷达资料在平远定点人工增雨作业中的应用
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摘要
人工增雨是增加自然云降水,开发利用空中水资源的有效途径,而雷达能及时探测云和降水系统的结构分布和发展变化,是指导人工增雨作业的有力工具。该文根据2017年11月12日梅州雷达的反射率因子、回波顶高等产品的演变特征,分析人工增雨的作业时间及验证增雨效果。结果表明:增雨作业要选择在天气系统发展或成熟阶段进行,即反射率因子回波呈片状、强度最好在30 d Bz以上,这种回波特征有利于天气系统发展,且回波顶高在3～5 km时,非常有利于实施人工增雨作业,并能取得较好的增雨效果。
Artificial precipitation is an effective way to increase natural cloud precipitation and develop and utilize air water resources. But radar can detect the structure distribution and development of cloud and precipitation system in time,and it is a powerful tool to guide artificial precipitation operation. Based on the evolution characteristics of the Meizhou radar's reflectivity factor and echo top height on November 12,2017,this paper analyzes the operation time of artificial precipitation and verifies the effect of rain enhancement. The results show that the operation of precipitation enhancement should be carried out at the development or maturity stage of weather system,that is,the echo of reflectivity factor is flake-like,and the intensity is better than 30 d Bz. This echo feature is conducive to the development of weather system,and the echo crest height is 3 ～ 5 km,which is very conducive to the implementation of artificial precipitation,and can achieve better effect of precipitation enhancement.
Artificial precipitation is an effective way to increase natural cloud precipitation and develop and utilize air water resources. But radar can detect the structure distribution and development of cloud and precipitation system in time,and it is a powerful tool to guide artificial precipitation operation. Based on the evolution characteristics of the Meizhou radar's reflectivity factor and echo top height on November 12,2017,this paper analyzes the operation time of artificial precipitation and verifies the effect of rain enhancement. The results show that the operation of precipitation enhancement should be carried out at the development or maturity stage of weather system,that is,the echo of reflectivity factor is flake-like,and the intensity is better than 30 d Bz. This echo feature is conducive to the development of weather system,and the echo crest height is 3 ～ 5 km,which is very conducive to the implementation of artificial precipitation,and can achieve better effect of precipitation enhancement.
引文
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[9]张瑞波,刘丽君,钟小英,等.利用新一代天气雷达资料分析飞机人工增雨作业效果[J].气象,2010,36(2):70-75.
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[2]苗婷,黄晓梅,何宏铸. 2016年康县人工增雨效果评估及分析[J].现代农业科技,2016(19),246-248.
[3]李颖,张俊东,罗鹏.大气可降水量估算模型研究[J].气象与环境科学,2013,36(2):21-25.
[4]杨立洪,张晨辉,贺汉清.利用雷达资料量化人工增雨作业参数[J].广东气象,2009,31(1):51-54.
[5]邓战满,张中波.几种人工增雨效果评估方法的应用与研究[J].安徽农业科学,2014,42(9):2 675-2 676,2 680.
[6]王婉,姚展予. 2006年北京市人工增雨作业效果统计分析[J].高原气象,2009,28(1):195-202.
[7]何媛,黄彦彬,李春鸾,等.海南省暖云烟炉设置及人工增雨作业条件分析[J].气象科技,2016,44(6):1 043-1 052.
[8]王以琳,姚展予,林长城.一次火箭人工增雨作业雷达回波响应探讨[J].气象科技,2016,44(6):1 053-1 059.
[9]张瑞波,刘丽君,钟小英,等.利用新一代天气雷达资料分析飞机人工增雨作业效果[J].气象,2010,36(2):70-75.
[10]卓世新,李如琦,苗运玲,等.哈密地区空中水汽及增水潜力分析[J].沙漠与绿洲气象,2016(6):68-72.