摘要
本文分析了广州1984年小阵雨的雨滴谱分布。指出该地区小阵雨谱型以Ⅲ型谱(多峰谱)居多,不出现Ⅰ型谱(无峰谱)。滴浓度较小而平均尺度较大,最大滴直径达6.5mm。最突出的特点是起始直径较大,小滴明显不足而大滴较多,用指数谱描述不甚理想。 此外发现,W-I关系较Z-I关系的地区变异小得多;该地小阵雨的W-I,Z-I关系可分别表示为: W=0.0569I^(0.88), Z=345I^(1.39)。
In this paper, the drop-size distribution of shower in Guangzhou has been analyzed. The results show that Type 3 spectra appeared with highest frequency and no Type 1 in that area.The average size is larger. The maximum diameter of drops can reach up to 0.5mm . The outstanding features are that the minimum diameter of drops is too large, and there are fc\v small drops but much more larger ones .As a re suit , it is imperfect to describe the spectra with an exponential function. Inaddition, the results reveal the areal difference of W-I relationship is much smaller than that of Z-I relationship. In Guangzhou area, W-I and Z-I relationship of shower are expressed respectively asZ=34511.39W=0.056910.88
出处
《气象》
CSCD
北大核心
1989年第5期16-22,共7页
Meteorological Monthly