The WDQMS operational web tool monitors the performance of all surface and upper-air (radiosonde) land stations documented in OSCAR/Surface based on near-real-time monitoring information provided by DWD, ECMWF, JMA and NCEP. The system collects 6-hourly quality monitoring (QM) reports (CSV files in commonly agreed format containing information for each observing station based on data assimilation results) from these four WIGOS Monitoring Centres and stores the data in the WDQMS database at ECMWF. Figure 1 shows the diagram of QM data flow for the WDQMS web tool, in which the database fed by the NWP QM reports and the web-based application constitute the back and front end of the QM system, respectively.
Figure 1 - Quality Monitoring (QM) data flow in the WDQMS web tool. The dash arrows represent features to be added to the system in future releases.