Prospect of Meteorological Application Network on the Ground-based GPS in China
Ground-based GPS atmospheric sounding has been used in many meteorological services due to its high temporal resolution, accuracy, no calibration and multiple applications. Research and regional operational experiments have been conducted in China over these years. Two levels of meteorological applications will be operated in the future with the development of the Chinese continuous operational reference stations. The national GPS network with about 100 km distance between two stations is used to monitor the synoptic distribution and variation of the moisture, while the local GPS network with about 10-40 km distance is used to monitor the me-soscale weather phenomena, and to obtain moisture profiles by tomographic technology. GPS stations operated by different departments in China will be combined with the ones operated by China Meteorological Administration to meet the operational need of meteorological department. The establishment of the project will rely on the operational system of communication and technique to improve the weather forecast and monitor the space weather and the climate.