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投稿时间：2012-08-18 修订日期：2013-03-12
投稿时间：2012-08-18 修订日期：2013-03-12
中文摘要: 利用三维对流云盐粉催化模式对一次对流云降水进行了盐粉催化模拟试验。模式中考虑了盐粉与云雨滴和冰相粒子间的相互作用。模拟结果显示，当采用20 μm粒径的盐粉进行单次催化时，催化效果较好，地面总雨量可增加20%，催化次数的增多会导致降水的减少。霰融化成雨是雨滴增长的主要机制，霰碰并过冷云水是霰增长的主要机制，催化后霰融化成雨和霰碰并过冷云水的速率均有提高。催化会引起水成物云滴、冰晶、霰和雨滴的比质量变化。霰和云滴的粒径也在催化后出现了明显的增大。催化后短时间内动力过程出现了变化。
中文关键词: 盐粉催化，三维对流云模式，催化模拟
Abstract:A convective precipitation is simulated by using a 3 D convective cloud salt seeding model. The model considers the microphysical processes between salt particles, liquid and ice particles. The simulation results indicate that seeding at a single time with seeding particle size of 20 μm can produce a good seeding effect, which can achieve 20% precipitation enhancement. Increasing the number of seeding time causes precipitation reduction. Graupel melting into rain is the main mechanism of raindrop increasing, and graupel collecting raindrop is the main mechanism of graupel increasing. The two processes get enhanced after seeding. Seeding brings changes to mixing ratios of cloud water, ice crystal, graupel and rain. The sizes of rain and graupel gain in seeded cloud.
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基金项目:公益性行业(气象)科研专项（GYHY201106031、GYHY201306065）、国家自然科学基金面上项目（41075100）和(4080500341275148)共同资助
引用文本：
张邢,王广河,楼小凤,胡志晋,2013.对流云盐粉催化的数值模拟研究[J].气象,39(8):1057-1068.
ZHANG Xing,WANG Guanghe,LOU Xiaofeng,HU Zhijin,2013.Research on Salt Seeding Numerical Simulations in Convective Cloud[J].Meteor Mon,39(8):1057-1068.
张邢,王广河,楼小凤,胡志晋,2013.对流云盐粉催化的数值模拟研究[J].气象,39(8):1057-1068.
ZHANG Xing,WANG Guanghe,LOU Xiaofeng,HU Zhijin,2013.Research on Salt Seeding Numerical Simulations in Convective Cloud[J].Meteor Mon,39(8):1057-1068.