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投稿时间:2007-01-23 修订日期:2007-09-10
投稿时间:2007-01-23 修订日期:2007-09-10
中文摘要: 根据吉林省现行旬降水量等级划分标准和办法,提出了一种基于降水概率分布函
数
的客观划分办法。该方法引入Z指数变换,将偏态分布的旬降水量序列转换为近于正态分
布的
Z序列,通过对Z指数的划分反算而得实际降水量的划分结果。该方法既考虑其自身概率
分布
,又避免了复杂的分布函数参数计算。将该方法的客观标准与现行标准的划分结果进行比较
分析,发现前者结果稳定,随机性小,结果更为合理。
Abstract:Based on the current standard and method to classify the ten day
rainfall of Jilin Province at present, a new method, which is based on the pro
bability distribution function, is presented. In view of the non normal distrib
u
tion of ten day rainfall, Z index transformation is employed. The index can
tran
sform the non normal distribution data into the normal one. The classification
r
esult of rainfall is based on classifying the Z index. The results of the n
ew method are more stable and more rational than those of the original method.
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引用文本:
陈长胜,王慧敏,慕秀香,汪秀清,2007.吉林省旬降水量的客观分级方法探讨[J].气象,33(11):87-92.
Chen Changsheng,Wang Huimin,Mu Xiuxiang,Wang Xiuqing,2007.Discussion on the Objective Classification Method for Ten day Rainfall of Jilin Province[J].Meteor Mon,33(11):87-92.
陈长胜,王慧敏,慕秀香,汪秀清,2007.吉林省旬降水量的客观分级方法探讨[J].气象,33(11):87-92.
Chen Changsheng,Wang Huimin,Mu Xiuxiang,Wang Xiuqing,2007.Discussion on the Objective Classification Method for Ten day Rainfall of Jilin Province[J].Meteor Mon,33(11):87-92.