利用地基GPS观测火箭人工催化后大气水汽变化  

Ground-Based GPS Observation of Variation of Air Precipitable Water Vapor after Rocket Seeding

作　　者：杨文霞[1] 景华 任芝花[3] 

机构地区：[1]河北省生态环境监测实验室,石家庄050021 [2]河北省气象局,石家庄050021 [3]国家气象信息中心,北京100081

出　　处：《气象科技》2008年第2期215-218,共4页Meteorological Science and Technology

基　　金：中国气象局"京津冀地区地基GPS大气水汽观测资料应用研究"课题资助

摘　　要：为观测火箭人工催化后大气中水汽的变化规律,利用河北省秦皇岛市单站地基GPS观测数据,对2006年5月21日在该站上风方实施的两次火箭人工增雨作业进行了分析。结果发现单站地基GPS上空层状云在人工催化开始后1-3 h左右,都出现了大气中可降水量（PWV）下降的同时逐时雨量增加等现象,在天气系统前期作业,PWV得到较快恢复和补偿,人工增雨效果较后期明显。将观测结果与早期和最近模式研究结果进行了比较,具有较好的一致性。In order to understand the regularity of air PWV （Precipitable Water Vapor ） variation after rocket cloud seeding, by means of the observation data obtained by the single-station ground-based GPS at Qinhuangdao, Hebei Province, two cases of rocket precipitation enhancement operations in upwind of the GPS station are analyzed. It is found that the air PWV over the GPS station decreased while the rainfall intensity increased 1 to 3 hours after each rocket seeding operation. The PWV rose again and was compensated faster when seeding at the early stage of weather system development than seeding at the late stage, and seeding effectiveness is more significant. The observation results are compared with some early and new numerical simulation conclusions.

关 键 词：地基GPS 火箭催化 水汽变化 

分 类 号：P227[天文地球—大地测量学与测量工程] TH765.5[天文地球—测绘科学与技术]