山东省1989—2008年23架次飞机云微物理结构观测试验结果

The observational results of the clouds microphysical structure based on the data obtained by 23 sorties between 1989 and 2008 in Shandong Province

利用山东省1989—2008年23架次秋季降水云系云结构的粒子测量系统(PMS)探测试验资料,分析了云中过冷水以及冰晶浓度的分布特征。结果表明,山东省降水云系中存在较为丰富的过冷水,最大可达0.36g/m^3,云中冰晶浓度最大可达12.8—406L^(-1)。对2006—2008年探测的云粒子浓度、直径及过冷水随温度变化特征进行了分析。云粒子谱分析表明,云粒子谱为负指数型单峰谱,峰值在小值端。

By using the Particles Measuring System（PMS）via 23-sortie flying the cloud structure in autumn precipitating clouds was sampled from 1989 to 2008 in Shandong Province.The distribution of supercooled water and ice crystal concentration within the clouds is analyzed.The results show that there is high supercooled water in the clouds in Shandong Province with the supercooled water maximum being 0.36g/m^3 and the maximum number concentration of ice crystals being 12.8-406 L^（-1）.The distribution changes in the could particle concentration,diameter and supercooled water with temperature are also analyzed for the period of 2006 - 2008.The cloud particle spectrum shows that cloud spectrum follows the unimodal distribution,and the maximum concentration values are mainly located in the side of small-size particles.