根据合肥站四年整层大气水汽含量和地面水汽密度ρ0的晴天观测资料，统计分析了该地区大气水汽标高H的变化特征。结果表明：H的年变化特征为夏季最大，冬季最小，春、秋季节相差很小；季节平均水汽标高值和季节平均地面气温呈高度正相关；各个季节水汽标高的日变化特征均为双谷型，最大值出现在下午16∶00左右，两个低谷分别出现在上午08∶00和夜间20∶00左右；上午06∶00至下午16∶00，H的时平均值与对应ρ0的时平均值呈高度负相关。

Based on four-year observation of integrated water vapor and surface vapor concentration ρ0 on sunny days at Hefei station, the scale height H of the atmospheric water vapor was statistically analyzed.Results indicate that annual variation of H is obviously marked by summer(winter) the highest(lowest)value, and the discrepancy between spring and fall is feeble. The degree of correlation between mean seasonal values of H and mean seasonal values of ground air temperature is excellent. The diurnal variations of H exhibit two-trough shape for different seasonal classes, with maximal value at 16:00 and minimum value at 08：00 and 20：00, respectively. Mean hourly values of H are proved to having excellent negative correlation with mean hourly surface vapor concentrations ρ0 during 06：00～16：00.