祁连山云系云微物理结构和人工增雨催化个例模拟研究  

A Numerical Simulation Study on Microphysical Structure and Cloud Seeding in Cloud System of Qilian Mountain Region

作　　者：陈小敏[1] 刘奇俊[2] 章建成[2] 

机构地区：[1]中国气象科学研究院,北京100081 [2]国家气象中心

出　　处：《气象》2007年第7期33-43,共11页Meteorological Monthly

基　　金：国家气象中心科研开发课题"基于GRAPES的人工增雨云系模式研发和试验";"西北地形云结构及降水机理研究(40533015)"的资助

摘　　要：改进了胡志晋、刘奇俊的云物理方案,并实现了与GRAPES模式的耦合;利用包括了新云物理方案的GRAPES模式对祁连山地区一次山区云降水过程进行了数值模拟,研究了祁连山地区云系的微物理结构,并开展了人工催化的数值试验研究。结果表明:(1)耦合的双参数方案能够较好的模拟此次降水范围、强度及云场分布的特点和规律;(2)新方案给出了祁连山云系的合理微观结构和它的特征;(3)播撒冰晶可以增加降雨,在云初始阶段播撒增雨范围较广,在云发展阶段播撒增雨范围较集中;(4)播撒冰晶后,云的动力结构发生了改变。Based on the Hu Zhijin and Liu Qijun＇s cloud physics scheme, a new tow-moment microphysical scheme is developed and incorporated in the GRAPES model. Using the mode which contains the new cloud physics scheme, a mountainous area cloud and precipitation process in＇ the Qilian Mountain region is simulated. The microstructure of mountainous area cloud is studied and a numerical simulation on cloud seeding is conducted. The main analysis results are as follows： （1） The GRAPES model with two-moment scheme is able to reveal the distribution of precipitation, intensity and cloud field; （2） The new scheme can give reasonable microstructure of cloud system in the Qilian Mountain region and indicate its some characteristics; （3）The artificial ice crystals seeding can lead to the increasing of precipitation, and the distribution of rain enhancement in the initial stage of cloud is wider than that in the development stage of cloud; （4） Dynamical structure of the cloud has some changes after seeding.

关 键 词：GRAPES模式 双参数云物理方案 云物理过程 催化模拟 

分 类 号：P426.51[天文地球—大气科学及气象学]