RESEARCH ON CORS (CONTINUOUSLY OPERATING REFERENCE STATION) SYSTEM-BASED REGIONAL WATER VAPOR RETRIEVAL IN GUILIN
- 1Natural Resources Information Center of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, 530023, China
- 2School of Natural Resources and Surveying, Nanning Normal University, 530001, Nanning, China
Keywords: Guangxi CORS, PWV (precipitable water vapor), Atmospheric weighted average temperature, Sounding data, GAMIT
Abstract. This paper was aimed at analyzing and verifying each of the parameter settings in the computing process of GAMIT. The optimum number of introduced auxiliary station was determined, and models for the weighted mean temperature of the atmosphere in Guilin were established. Under the underlying strategy of introducing all the respective most optimum criteria, the precipitable water vapor (PWV) was first calculated by using the data provided by the CORS base station in Guilin, before analyzing and comparing it with the PWV and actual precipitation obtained from the sounding data. According to the result, a high degree of coincidence was discovered among the general trend of the following three indicators: the calculated PWV, as well as the PWV and actual precipitation acquired using the sounding data, hence offering a significant value for reference in terms of extreme weather warning.