摘要
本文利用成都及周边GPS连续观测站的观测数据及IGS精密星历数据,反演了成都地区2005年7、8、9三个月的大气可降水量,并与探空结果、实际降水量进行对比分析,证实了GPS水汽反演在成都地区的可行性。研究表明,GPS水汽反演结果与探空结果有良好的相关性,但目前还无法将其用于中、短期的降雨预报。
This paper introduces the principle of water vapor computing by GPS, and uses the Bernese software to compute the PWV of Chengdu area with the observation and weather information data of GPS tracking station on July, August and September 2005, also analyzed the connection of PWV-Sonde, PWV-GPS and rainfall. The result of study shows there is a good coherence between the PWV-GPS and PWV-Sonde, but now the PWV-GPS can＇t be directly used in weather forecast in medium-term or short-term.
出处
《四川测绘》
2008年第3期121-123,共3页
Surveying and Mapping of Sichuan
关键词
地基GPS气象学
可降水量
天项静力延迟
天项湿延迟
Ground-based GPS meteorology
Perceptible water vapor
Zenith hydrostatic delay
Zenith water delay
