气象与环境学报Issue(5)：38-48,11.DOI:10.3969/j.issn.1673-503X.2014.05.006
G PS遥感大气可降水量在大连地区3次降水过程中的应用
Application of precipitable water vapor from ground based GPS to three precipitation processes in Dalian region
摘要
Abstract
Based on precipitable water vapor(PWV)data from GPS/MET observation network in Dalian,character-istics of PWV and its relationships with precipitation and precipitation intensity in Wafangdian,Zhuanghe and Changhai regions in 200 1 were analyzed.According to the above analysis and physical quantity field as well as weather system,relationships of PWV variation with large-scale water vapor transport convergence and moisture convergence,and application of GPS to a rainstorm process were discussed.The results show that increase of PWV is often restricted by the local weather system.For a clear precipitation process,PWV changes and precipitation have a clear relation from beginning to end of the precipitation process.When water vapor transports from south to north,PWV increases gradually before precipitation begins.When it has large range moisture convergence at sur-face and upper level,and specific humidity reaches above 10 g·kg -1 ,PWV increases significantly in previous 4-5 hours of rainstorm.Main precipitation period corresponds to the peak value of PWV.Meanwhile,PWV increment has a significant relation with precipitation intensity.关键词
大气可降水量(PWV)/水汽输送/降水量/降水强度Key words
Precipitable water vapor(PWV)/Moisture transform/Precipitation/Precipitation intensity分类
天文与地球科学引用本文复制引用
程航,程相坤,朱晶,李鸿强,刘晓初..G PS遥感大气可降水量在大连地区3次降水过程中的应用[J].气象与环境学报,2014,(5):38-48,11.基金项目
中国气象局气象关键技术集成与应用项目（CAMG2012M15）资助。 （）
