2013年内蒙古中部地区飞机增雨过程中云水资源特征分析

Analysis on Cloud Water Resources Characteristics in the Process of Airplane Enhancement Precipitation in Middle Part of Inner Mongolia In 2013

利用NCEP再分析资料、地面观测等资料,探讨了2013年内蒙古中部地区飞机增雨过程云水资源特征,并通过对比分析给出了适合飞机人工增雨作业的空中水汽和水凝物背景特征。结果表明:(1)夏季,单位面积地区上空整层大气水汽含量在30mm以上、云水含量2.0mm以上、小时凝结量在1.0mm以上时有利于实施增雨作业。有利作业过程水汽通量较大,作业区大部为较明显的水汽辐合,准饱和区水平范围较大,垂直方向准饱和区厚度在3.0km以上,云底高度在1.0km左右。(2)对于一次天气过程,水凝物总量为水汽总量的10%左右,源源不断的水汽输入与凝结是过程中水汽和水凝物的主要来源,有利于作业天气过程的水凝物含量明显偏多。文章的结论对内蒙古中部地区飞机人工增雨作业具有参考意义。

Using the NCEP reanalysis data and the ground observation data, the characteristics of cloud water resnurces in the pro- cess of airplane enhancement precipitation in middle part of Inner Mongolia was discussed. Through the comparative analysis, the background characteristics of water vapour and hydrometeor that are suitable for airplane enhancement precipitation were given. The results showed that： （1） In summer, the water vapor content above 30mm, the cloud water content is above 2.0mm, and hours condensate volume more than 1.Omm are conducive to the implementation of rain enhancement operation in whole layer atmosphere in the sky of unit area region. For the Favorable operation process, the water vapor flux is larger, most of the work area is obvious moisture, convergence, the level range of quasi-saturation area is larger, the vertical thickness is above 3.0KM, and the cloud base height is about 1.0km. （2）For a weather process, condensate water content is about 10% of the total water vapor. The total input vapor and condensation is the major source of water vapor and hydrometeor, the hydrometeor content was partial more in favourable operation weather process. The conclusion of this article is reference for the aircraft precipitation enhancement operation in middle part of Inner Mongolia.