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中文摘要: 本文给出了我国北方混合性、冷性层状云中冰晶(直径范围18—334μm)尺度谱分布特征和分布函数。冰晶尺度谱可归纳为单调下降和非单调下降两大类型,分布函数可用指数关系系N=N0exp[-λD]来拟合,相关显著水平α<0.01的样本,占本文统计的样本99%以上。冷性云中,谱分布参数N0和λ随云中温度降低而增大,在云中温度T<-10℃时,增大更为明显。谱分布参数N0和λ之间可用幂指数关系N0=σ1λβi来拟合,相关显著水平α<0.01。系数σ1、βi与云中有无冰晶繁生过程有关。
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Abstract:The size distribution and distribution function of ice crystals within mixed and cold cloud in Inner-Mongolia, Shan Xi, and Xin Jiang region were given. The size distribution of ice crystals may be classified to mono-decreasing type and non-mono-decreasing type. The size distribution function may be fitted with exponential for-mulaN (D)=N0exp (-XD). Samples of correlation significance level α<0.01 hold 99% or more of total samples. Within cold cloud distribution parameters N0 and λ increase with cloud temperature decreases. While at T<-10℃ layer, N0and λ increase apparently. We proposed the correlation relation between the N0and λ in the form of N=σλβ.
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引用文本：
陈万奎,严采蘩,1987.云中冰晶尺度谱特征与分布函数[J].气象,13(11):13-17.
,1987.The size distr ibution of ice crystals within clouds[J].Meteor Mon,13(11):13-17.
陈万奎,严采蘩,1987.云中冰晶尺度谱特征与分布函数[J].气象,13(11):13-17.
,1987.The size distr ibution of ice crystals within clouds[J].Meteor Mon,13(11):13-17.