摘要
给出了用碘化银(AgI)消除过冷低云时微物理量随时间演变的详细过程。飞机播撒 AgI 后,云滴数浓度不断减少,对应的云含水量随时间呈指数衰减;冰雪晶数浓度不断增加;由于冰雪晶凝华、撞冻、聚并导致冰雪晶尺度谱明显拓宽,最大雪晶尺度可达5400μm。这些过程并非瞬时发生而是缓慢进行的,一般在播撒后5分钟才有明显变化。
The detailed evolution process of the microphysical structure of supercooled lower cloudsseeding with AgI aerosols is described.The results from the experiment show that after AgI-seed-ing,clouddrop number concentrations decreased and the corresponding clouddrop water contentfell exponentially with time,whereas the ice particles number concentration increased with time;the crystal size distribution widened apparently with 5400μm maximum diameter approached dueto sublimation,accretion and coagulation and all the processes after 5 minutes of cloudseedinghappened slowly,not abruptly.
出处
《应用气象学报》
CSCD
北大核心
1992年第S1期59-66,共8页
Journal of Applied Meteorological Science
