利用CORS网数据进行水气含量计算分析的应用研究  

Application and research of using CORS network data to calculate and analyze the precipitable water vapor

作　　者：韩红超 张文峰 李春进 HAN Hongchao;ZHANG Wenfeng;LI Chunjin(Ningbo Institute of Surveying,Mapping and Remote Sensing,Ningbo 315000,China)

机构地区：[1]宁波市测绘和遥感技术研究院,浙江宁波315000

出　　处：《测绘通报》2021年第S02期177-180,185,共5页Bulletin of Surveying and Mapping

摘　　要：本文利用宁波市4个CORS站2018-07-08—2018-07-12的观测数据,使用GAMIT软件计算反演了大气水汽含量PWV,并对PWV时间序列、PWV与实际降水间关系进行了研究分析,发现PWV值及其变化率与实际降水之间具有良好的对应关系:较高的PWV值是降水发生的前提条件,PWV剧烈突变是降水发生的直接原因,PWV变化率越大,发生降水的概率和实际降水量就越大。研究表明,利用CORS网观测数据计算分析PWV具有全天候、连续不间断、高时空分辨率等优点,对水汽研究、环境监测、气象预报等具有一定的指导和参考价值。In this paper,the atmospheric water vapor is calculated and inverted by using Gamit software based on the observed data from 2018-07-08 to 2018-07-12 of four CORS stations in Ningbo.PWV time series,the relationship between PWV and actual precipitation is studied and analyzed.It is found that the PWV value and its variation rate correspond well with actual precipitation.Precipitation occurs on the premise of the high PWV value.PWV sudden change is the direct cause of precipitation.The greater the change rate of PWV,the greater the probability of precipitation and the actual precipitation.The results show that using CORS network observation data to calculate and analyze PWV has many advantages,such as all-weather,continuous and uninterrupted,high spatial and temporal resolution,and it has some guiding and reference value for water vapor research,environmental monitoring,meteorological forecast and so on.

关 键 词：CORS PWV GAMIT 时序分析 降水预报 

分 类 号：P228.4[天文地球—大地测量学与测量工程]