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Single Radar Cartesian system flow chart

National 3D Radar Mosaic

As part of NMQ, NSSL has implemented a system that produces a national (CONUS) 3D radar mosaic grid with a 1-km horizontal resolution over 31 vertical levels and a 5-minute update cycle. The mosaic system (termed NM2Q for National Mosaic and Multi-sensor QPE) takes base level data from all available radars (NEXRAD, Canadian Radar, TDWR, gap radars) at any given time, performs quality control, and then combines reflectivity observations from individual radars onto a unified 3D Cartesian frame. The 3D reflectivity grid can be used for multi-sensor severe storm algorithms, regional rainfall products generation, aviation weather applications, and data assimilations for convective scale numerical weather modeling.