Meteorological applications of precipitable water vapor measurements retrieved by the national GNSS network of China  

作　　者：Liang Hong Cao Yunchang Wan Xiaomin Xu Zhifang Wang Haishen Hu Heng 

机构地区：[1]Meteorological Observations Center, China Meteorological Administration [2]Numerical Weather Prediction Center, China Meteorological Administration

出　　处：《Geodesy and Geodynamics》2015年第2期135-142,共8页大地测量与地球动力学（英文版）

基　　金：financially supported by the Special Fund for Meteorological Scientific Research in the Public Interest(GYHY201406012);the National Natural Science Foundation of China(41275114);a construction fund for CMONOC

摘　　要：In this study, the Global Navigation Satellite System （GNSS） network of China is discussed, which can be used to monitor atmospheric precipitable water vapor （PWV）. By the end of 2013, the network had 952 GNSS sites, including 260 belonging to the Crustal Movement Observation Network of China （CMONOC） and 692 belonging to the China Meteorological Administration GNSS network （CMAGN）. Additionally, GNSS observation collecting and data processing procedures are presented and PWV data quality control methods are investigated. PWV levels as determined by GNSS and radiosonde are compared. The results show that GNSS estimates are generally in good agreement with measurements of radio- sondes and water vapor radiometers （WVR）. The PWV retrieved by the national GNSS network is used in weather forecasting, assimilation of data into numerical weather prediction models, the validation of PWV estimates by radiosonde, and plum rain monitoring. The network is also used to monitor the total ionospheric electron content.In this study, the Global Navigation Satellite System （GNSS） network of China is discussed, which can be used to monitor atmospheric precipitable water vapor （PWV）. By the end of 2013, the network had 952 GNSS sites, including 260 belonging to the Crustal Movement Observation Network of China （CMONOC） and 692 belonging to the China Meteorological Administration GNSS network （CMAGN）. Additionally, GNSS observation collecting and data processing procedures are presented and PWV data quality control methods are investigated. PWV levels as determined by GNSS and radiosonde are compared. The results show that GNSS estimates are generally in good agreement with measurements of radio- sondes and water vapor radiometers （WVR）. The PWV retrieved by the national GNSS network is used in weather forecasting, assimilation of data into numerical weather prediction models, the validation of PWV estimates by radiosonde, and plum rain monitoring. The network is also used to monitor the total ionospheric electron content.

关 键 词：Precipitable water vapor （PWV） Global navigation satellite system（GNSS） Crustal Movement ObservationNetwork of China （CMONOC）China meteorological administra-tion GNSS network （CMAGN） Water vapor radiometers （WVR） Quality control Meteorological application Assimilation 

分 类 号：P228.4[天文地球—大地测量学与测量工程] P412[天文地球—测绘科学与技术]