一次人工增雨作业效果的中尺度数值模拟  

The mesoscale numerical simulation of the effectiveness of an artificial precipitation enhancement operation

作　　者：陈钰文[1,2] 王佳 商兆堂[3] 王可法 智协飞[4] 

机构地区：[1]南京大学大气科学学院,南京210093 [2]江苏省气候中心,南京210008 [3]江苏省气象局,南京210008 [4]南京信息工程大学气象灾害省部共建教育部重点实验室,南京210044

出　　处：《气象科学》2011年第5期613-620,共8页Journal of the Meteorological Sciences

基　　金：公益性行业(气象)科研专项(GYHY20100629);江苏省高校自然科学研究计划项目(05KJD170126);江苏省气象局开放基金(K201009;KM201107);江苏省科技支撑计划项目(BE2009694)

摘　　要：本文根据AgI播撒影响机制,把AgI催化过程耦合到初始条件、边界条件更完善且有业务化能力的中尺度WRF模式中,并利用该模式对溧阳天目湖积云增雨过程进行中尺度催化数值模拟分析。实况资料及数值模拟分析结果表明,该模式成功地模拟了溧阳天目湖地区的对流云系,作业后催化云的强回波面积扩大,平均回波强度增加,地面降水量增加,且微物理过程分析表明,作业后催化云中高空冰晶、雪、霰冰相大粒子含量增加,相应地低空雨水含量增加,导致地面降水量增加。According to the mechanism of the AgI seeding and function,the AgI seeding course was coupled into the operational mesoscale WRF model with reasonable boundary and initial conditions.Then the model is applied to analyze convective precipitation enhancement over the Tianmu Lake in Liyang.The results from analysis of real data and numerical simulation show that：（1）The model successfully simulates the convective system influencing the Taimu Lake region at Liyang.（2） After seeding the strong echo area extends,the average echo intensity increases significantly and the rainfall on the ground increases.（3）The microphysical analysis show that after seeding the content of the ice,snow and grauple increases,correspondingly the content of the rain water at the low-level increases as well,which results in the enhancement of the precipitation.

关 键 词：增雨效果 AgI催化 中尺度数值模拟 

分 类 号：P48[天文地球—大气科学及气象学]