Remarks on GPS Tropospheric Delay Products and their Significance

摘要

Paper deals with some areas of my interest in ZTD series " and research in GPS meteorology. I have made some quality analysis of standard tropospheric solutions and ZTD combined products (EPN and IGS). Special stress is laid on quality of EPN tropospheric delay output. I look for factors considered as affecting tropo- spheric solution quality. Next area refers directly to GPS meteorology: IPW derivation, quality comparisons with radiosounding profiles, correlation of IPW series for different stations and other parameters. Finally there are presented some ideas how to use (analyse and visualise in interesting way) tropospheric delay in meteorology and climatology - long IPW series for different climate conditions.