微波辐射计探测降雨前水汽和云液水  

MICROWAVE RADIOMETRIC MEASUREMENT ON WATER VAPOR AND CLOUD LIQUID WATER BEFORE RAINFALL

作　　者：雷恒池[1] 魏重[1] 沈志来[1] 梁谷[2] 李燕[2] 

机构地区：[1]中国科学院大气物理研究所,北京100029 [2]陕西省人工影响天气办公室,西安710015

出　　处：《应用气象学报》2001年第z1期73-79,共7页Journal of Applied Meteorological Science

基　　金：国家科技攻关课题资助! (96 0 2 0 0 1 0 5);国家自然科学基金!(批准号 :4 95752 4 5)

摘　　要：1997年 8～ 1 1月在陕西西安使用双通道地基微波辐射计对降水云系进行探测 ,除得到云中水汽含量 (Q)和垂直路径积分云液水含量 (L)的一般统计特征量外 ,还发现在降雨开始前 ,Q 和 L 的数值均有跃增现象。提出在降水云系前方 (周围 )存在丰水区的假设 ,这里可能是云滴向雨滴转化的孕育区。The Ground-Base Dual-Wavelength Microwave Radiometer (GBDWMR) system was applied to detect the precipitable water vapor (Q) and path-integrated cloud liquidwater (L) before rainfall in Xi'an area from August to November in 1997.Besides the normal statistic characters,the results indicate that there is a sharp increase both in precipitable water vapor (Q) and in vertical path integrated cloud liquid water (L) values before precipitation.It is suggested that there is a plentiful water vapor and cloud liquid water area around the precipitation region of the cloud system.The plentiful water area is the feeder of water vapor and cloud liquid water for the precipitation area.By the way,those phenomena can alsobe used for weat her nowcasting and weather modification.

关 键 词：地基微波辐射计 水汽总量 垂直路径积分 云液水含量 丰水区 

分 类 号：P481[天文地球—大气科学及气象学]