Research on the Methods of Obtaining Precipitable Water Vapor in Yangtze River Delta
Abstract Based on the GPT3 model, GNSS observation data and meteorological data of multiple radiosonde stations in Yangtze River Delta, we evaluate the precision, reliability and real-time performance of PWV calculated by GPT3 model, 2 surface meteorological data methods and GNSS, compared with the radiosonde PWV as the true value. The results show that the GPT3 model can be used to obtain real-time PWV with low precision. GNSS-PWV has the highest precision, but it needs measured meteorological parameters, which limits its widespread application. The 2 surface meteorological data methods have the higher precision, but they need surface dew point temperature data.
Key words :
GPT3 model
PWV
GNSS
dew point temperature
radiosonde data
Cite this article:
LI Li,GAO Yin,CHEN Guodong et al. Research on the Methods of Obtaining Precipitable Water Vapor in Yangtze River Delta[J]. jgg, 2022, 42(4): 384-388.
LI Li,GAO Yin,CHEN Guodong et al. Research on the Methods of Obtaining Precipitable Water Vapor in Yangtze River Delta[J]. jgg, 2022, 42(4): 384-388.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2022/V42/I4/384
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