| 两次江淮气旋的云雨特征及其人工播云效果的综合分析 |
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| 引用本文： | 汪学林,谷淑芳,于勇,李永振,李茂仑,霍晓光,齐颖,齐彦斌,刘健,张景红,郑娇恒.两次江淮气旋的云雨特征及其人工播云效果的综合分析[J].应用气象学报,2001,12(Z1):48-57. |
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| 作者姓名： | 汪学林 谷淑芳 于勇 李永振 李茂仑 霍晓光 齐颖 齐彦斌 刘健 张景红 郑娇恒 |
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| 作者单位： | 吉林省人工降雨防雹办公室, |
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| 基金项目： | 本文由国家科技攻关（96-020-01-05）课题资助 |
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| 摘 要： | 用天气学、云物理学、统计计算和数值模拟等方法，对1997年5月份影响我省的两次江淮气旋降水系统进行了综合分析研究，发现(1)中低空水汽输送条件较好，都形成了大范围较稳定的降水性层状云系，出现了连续性降水。两次过程的深厚程度、动力条件有差别，云雨的宏微观特征也有所不同；(2)云中过冷层较厚，过冷水含量较高，大滴浓度较高，众数直径较大，有利于人工催化；(3)云层降水粒子的形成，在冷层以凝华和淞附增长为主，核化和繁生相对较小，进入暖层后，主要是云滴与雨滴以及雨滴间碰并为主；(4)用干冰进行了6架次人工增雨催化作业，经综合检验，约增雨10%～40%；(5)使用层状云数值模式进行人工催化模拟，当加入50个/L人工冰核，可使地面降水增加30%左右。如果过量播撒(加入500个/L)人工冰核，降水反而减少。
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| 关 键 词： | 人工播云 江淮气旋 数值模拟 |
| 修稿时间： | 2000年10月15 |
TWO CASE STUDIES OF CHARACTERISTICS OF
RAINS AND CLOUDS OVER JIANGHAI CYCLONE AND THE COMPOSITE
ANALYSIS OF ARTIFICIAL SEEDING EFFECTIVENESS |
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| Wang Xuelin,Gu Shufen,Yu Yong,Li Yongzheng,Li Maolun,Huo Xiaoguang,QI Ying,Qi Yanbin,Liu Jian,Zhang Jinghong,Zheng Jiaoheng.TWO CASE STUDIES OF CHARACTERISTICS OF
RAINS AND CLOUDS OVER JIANGHAI CYCLONE AND THE COMPOSITE
ANALYSIS OF ARTIFICIAL SEEDING EFFECTIVENESS[J].Quarterly Journal of Applied Meteorology,2001,12(Z1):48-57. |
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| Authors: | Wang Xuelin Gu Shufen Yu Yong Li Yongzheng Li Maolun Huo Xiaoguang QI Ying Qi Yanbin Liu Jian Zhang Jinghong Zheng Jiaoheng |
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| Abstract: | The composite analysis on two precipitation processes caused by the Jianghai Cyclone in May 1995 is made by means of synoptic, cloud physical and statistical methods. The results indicate: (1) There were favorable conditions for vapor transportation and extended stable precipitable stratiform clouds and a persistent precipitation occurred. (2) The supercooled layer is thicker; supercooled water and large drop concentrations and the mode diameter are higher, favorable to the artificial seeding. (3) The precipitation particles in the cloud layer are mainly formed in a manner of sublimation and riming in cool layers with less obvious nucleation and reproduce while mainly in a manner of collision and collection of cloud and rain drops in the warm layer. (4) Six artificial seeding operations using dry ice are conducted and the composite appraisal indicates that there is about 10%-40% rain increment. (5) The numerical simulation of artificial seeding indicates that when introducing artificial ice nuclei by 50/L, surface precipitation increases by 30% but the over-seeding of ice nuclei would result in less precipitation. |
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| Keywords: | Artificial seeding Jianghai Cyclone Numerical simulation |
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