Introduction and design of a heavy rain basic database system on metadata

Aiming at the characteristics of meteorological data with multiple sources, various forms and strong time series, and starting from the present situation in view of sharing demand of heavy rain data, this paper puts forward the design and realization method of a heavy rain database system based on the metadata to establish a heavy rain basic database system with focus on the heavy rain processes, referring to meteorological scientific data sharing technology both at home and abroad. This system fuses various conventional and non-conventional meteorological data including upper-air and surface observations, rainfall, satellite cloud images, radar data and numerical weather forecast on heavy rain related to heavy rain processes, as well as heavy rain detection data from GPS/MET, radiometer, and wind profiler. The sharing plat of the system has been working well since 2009 as a node of China meteorological data sharing service system.