Based on the radiosonde data in Gansu Province, an analysis of the climate character of the vapor content and the vapor flux in the air, and the vapor source or transportation condition is made.

• 摘要利用甘肃省各探空站历年的高空资料，通过计算空中水汽含量和水汽通量，对其气候特征、水汽的来源或输送进行分析。