气象科学2012，Vol.32Issue(1)：9-17,9.DOI:10.3969/2012jms.0026
三江源地区对流云吸湿性催化的数值模拟
Numerical simulation of hygroscopic seeding of convective clouds in the origin area of Three Rivers
摘要
Abstract
A 2D slab-symmetric nonhydrostatic cloud model was used to simulate the evolution of convective clouds and precipitation under different CCN ( Cloud Condensation Nuclei) conditions in the origin area of Three Rivers in Qinghai-Xizang Plateau. Furthermore, the effects of various hygroscopic seeding on the precipitations were also investigated. Results showed that: ( 1 ) with the initial concentration of CCN increasing, the initial time of precipitation delayed, and the total amount decreased; ( 2 ) the hygroscopic seeding in such conditions with high initial concentration of CCN would get more effective result of precipitation enhancement than others; ( 3 ) it can achieve the rainfall enhancement when seeding was conducted a few minutes after the cloud initiation and above the base of cloud. It was found that the most effective particles were those with radius larger than 1 |xm, the particle smaller than 1 jxm had a negative effect on the rain development. The result suggests that the hygroscopic seeding has a positive effect on the rainfall enhancement of convective clouds in the local area.关键词
云凝结核/对流云/吸湿性催化/分档云模式Key words
CCN/Convective cloud/ Hygroscopic seeding/ Spectral bin model分类
天文与地球科学引用本文复制引用
杨宗甄,陈宝君,银燕..三江源地区对流云吸湿性催化的数值模拟[J].气象科学,2012,32(1):9-17,9.基金项目
中国气象局云雾物理环境重点开放实验室开放基金(2009007) （2009007）
国家自然科学基金资助项目(40775005) （40775005）
江苏省气象科研开放基金(2009002) （2009002）
国家重点研究发展计划(973计划)项目(2006CB403706) （973计划）
