【摘要】 采用PMS公司生产的GBPP 1 0 0型地面雨滴谱仪 ,对河南省唐河地区 1 7次降水过程进行了连续观测 ,其中层状云降水 1 4次 ,积云降水 3次。 1 7次降水量都很小 ,5次有降水而无量 ,8、9月总降水量分别为 8.3mm和 31 .3mm ,占常年降水量的 1 5.6 % ,属特别干旱的季节 ,该文利用观测获得的 1 392 8个样本 ,分析了干旱年降水的微结构特征。更多还原

【Abstract】 Using GBPP-100 Surface Raindrop Spectrometer manufactured by PMS Co., several precipitation processes in the Tanghe area of Henan Province were monitored continuously from the end of July to the beginning of October, 1999, including 12 stratoform cloud and 3 cumulus rains. The rainfall amounts for all the rains are small: 5 of them are zero; the total rainfall in August and September is only 8.3 and 31.3 mm, only 15.6% of the normal rainfall. Therefore it can be considered as a severe drought period. Five precipitation enhancement operations are conducted and the micro-structural characteristics of surface raindrop spectra in drought years are analyzed.更多还原