摘要
利用一次回流天气过程的PMS资料,从微物理结构上对回流天气系统层状云的不均匀性进行了分析,发现飞机在进入较强降水云带时,云物理量(液水含量、云滴浓度、云滴平均直径,温度)等会产生剧烈变化,表现为液水含量跃增、云滴浓度快速增大、云滴谱谱宽拓宽、温度下降等,在同一较强云带中,温度变化不大并且比周围低,较强降水云带冰晶含量丰富,自然催化较好。
Based on the PMS data obtained during a returning process, the inhomogeneity of stratiform clouds in returning processes was analyzed from the aspect of microphysical structure. It is found that when the aircraft flies into stronger precipitating cloud bands, the main cloud physical parameters (liquid water content, particle mean diameter and concentration, and temperature) change greatly; the liquid water content, the mean diameter and the particle concentration leap up; spectrum width becomes wider; temperature drops; and so on. In the stronger cloud band, temperature variation is smaller and meanwhile temperature is lower. The stronger precipitating cloud bands have abundant ice crystals, indicating better natural seeding potential.
出处
《气象科技》
2005年第3期256-259,共4页
Meteorological Science and Technology
基金
国家自然科学基金项目(40175003)资助
