黄土高原尘沙作为大气冰核的实验研究  

A LABORATORY STUDY ON THE ROLE OF THE LOESS PARTICLES AS NATURAL ICE NUCLEI

作　　者：酆大雄[1] 陈汝珍[1] 蒋耿旺[1] 

机构地区：[1]中国气象科学研究院

出　　处：《应用气象学报》1994年第2期129-134,共6页Journal of Applied Meteorological Science

基　　金：非教育系统出国人员科技活动项目

摘　　要：将黄土粒子直接撒入云室进行成核率检测，在－１５℃时成核率可高达４×１０￣６／ｇ．这些结果可解释在沙尘暴期间观测到的大气冰核的高浓度．从中国黄土高原杨起的沙尘粒子为下游地区提供了丰富的冰核．The ice nucleating effectiveness of the loess particles has been tested by directlydispersing them in cloud chamber.Their effectiveness can reach up 4 × 10￣6 per gram at-15℃.From these results the high ice nuclei concentration observed during duststorms could be explained.It is considered that the airborne dust particles from theLoess Plateau of China would provide abundant ice nuclei for the downward area.

关 键 词：大气 冰核 沙尘暴 黄土高原 

分 类 号：P426.63[天文地球—大气科学及气象学]