【摘要】 本文对江苏省1975—1980年6—7月共732个12小时时段降水样本场,进行了定量描述和客观分类。讨论了三个问题:第一,如何减小短期降水场在量值和分布上的不稳定性和不均匀性,以便于定量描述;第二,提取降水场的特征参数,达到浓缩场量的目的;第三,用特征参数对降水场的雨量量级和分布两方面进行客观聚类分析。效果是令人满意的。更多还原

【Abstract】 An analysis is made of a sample of 732 12-hr rainfall fields forJune to July, 1975--80, to yield a quantitative description and objectiveclassification. Three aspects are examined: (i) how to reduce the in-stability and inhomogeneity in magnitude and distribution of the short--term precipitation fields to facilitate quantitative description; (ii)how to select the characteristic parameters in order to condense thefield quantities and (iii) the objective scattering analysis of differentcategories of rainfall amount and distribution, using these character-istic parameters. The results are found to be satisfactory.更多还原