哈密地区空中水汽及增水潜力分析

采用哈密地区6站1975—2014年逐日地面水汽压和降水量资料,计算了哈密各站的大气可降水量、有效空中水资源量、自然降水产出率和人工增水潜力值,并分析了各量的时空分布特征。结果表明:哈密地区年平均整层大气可降水量为2560~4327 mm,年均有效空中水资源量约为232~828 mm,占整层大气可降水量的1/4~1/10;年均自然降水产出率在9%~28%,自然降水产出率与降水量成正比关系。哈密地区的年人工增水潜力理论计算值在844~2399 mm之间,潜力值在夏季最大,巴里坤和伊吾明显多于其它区域。

Analysis of Air Water Resources and Artificial Precipitation Potentiality of Hami

Using the ground water vapor pressure and precipitation data from 1975 to 2014 of 6 stations in Hami, the atmospheric precipitable water, effective air water resources, natural precipitation ratio and artificial water potential were calculated, and their spatial and temporal distribution were analyzed. The results show that the annual mean atmospheric precipitable water in Hami is about 256~330mm. The annual mean effective air water resources is about 23~83mm, and accounts 1/4~1/10 from whole atmospheric precipitable water. The annual mean natural precipitation ratio is about 9~28%, and it is directly proportional to precipitation. The annual artificial water potential is 844-2399mm. The best season of artificial water homework is summer, and main area is Barkol and Yiwu.