摘要
文中介绍了 2 0 0 1～ 2 0 0 2年 4～ 7月吉林省人工增雨期间 ,在中国首次进行的机载对空微波辐射计外场飞行观测试验。观测结果表明 ,仪器可以灵敏地探测出层状云中垂直路径积分云液态水和过冷水含量及其变化 ,揭示了在层状云中嵌入的对流区中有丰富的垂直积分过冷水含量 ,量级可达 10 3 g/m2 。与地面雷达PPI回波强度呈正相关。本文还根据飞机上升 (或下降 )过程的探测数据 ,给出了水平均匀的层状云液态含水量的垂直廓线的实例 ,并进一步讨论了这种方法的应用前景。
In this paper, the first field observations were introduced on vertically path-integrated supper-cooled cloud liquid water content (SCCLWC) as well as vertically path-integrated cloud liquid water content (CLWC) by using an Airborne Upward-looking Microwave Radiometer in Jilin Province of China during the operations of precipitation-enhancement from April to July in 2001 and 2002. The results show that the equipment can perfectly measure the SCCLWC and CLWC as well as their changes in sheet clouds. It was found that the SCCLWC, especially for convection cells inlaid in sheet clouds, is much abundant with magnitude level up to 103 g/m and show significant non-homogeneity. The horizontal distributions of the SCCLWC are correlated with the distributions of PPI echo intensity of surface weather radar. Using the data obtained during the ascent (or descent) courses of the plane, a profile of cloud liquid water (CLW) content is given, and the application prospect of the profiling-CLW method is discussed.
出处
《气象学报》
CAS
CSCD
北大核心
2004年第6期868-874,共7页
Acta Meteorologica Sinica
基金
国家自然科学基金项目 (4 0 2 75 0 0 2 )
吉林省人工影响天气开放实验室基金
中国科学院知识创新工程重要方向项目(KZCX3 SW 2 2 )
