基于已知的云垂直结构判断的方法，将相对湿度阈值法与温度露点法相结合，并加以改进，得到更加科学有效的云垂直结构判断方法。利用南京地区探空站的探空资料数据，分析得到了该地区的云垂直结构参数，并对全年云垂直结构特征进行了统计分析。经过统计分析发现：这种改进的相对湿度阈值法是科学有效的；南京地区夏秋季节有云的概率大，多层云的状况较多；春冬季节有云的概率相对较小，单层云的状况较多；云层厚度呈现出"夏厚冬薄"、中低云厚而高云薄的规律。

Based on the known cloud vertical structure judgment method, combined with the relative humidity threshold method and the temperature dew point method, a more scientific and effective method was obtained. Moreover, the radiosonde data in Nanjing was used to collect the cloud vertical structure parameter of Nanjing, in order to statistically analyze the cloud vertical structure features. It was found that this new method is feasible; cloud occurs more frequently in summer and autumn in Nanjing than in spring and winter, especially for the multilayer cloud; and the cloud thickness is thicker in summer than in winter and decreases with the cloud height.

国家自然科学基金资助项目（41575020）