【摘要】 根据合肥站四年整层大气水汽含量和地面水汽密度p₀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p₀的时平均值呈高度负相关。更多还原

【Abstract】 Based on four-year observation of integrated water vapor and surface vapor concentration P₀ 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 P₀ during 06:00～16:00.更多还原