Here is a collection of links to learn more about MRMS and to access visualizations of MRMS data.
- NSSL MRMS Project Website
- Public MRMS VLab Site
- NOAA-only MRMS VLab Site (login required)
- NSSL MRMS Web Tools
- MRMS Operational Product Viewer: This display provides a centralized, openly accessible interface for visualizing all operational MRMS products being generated from NCO’s IDP. It is the only tool supported by NSSL that does not require VPN for access. The archive is complete back to October 2020 when MRMS V12 was released operationally. The viewer displays all domains (CONUS and OCONUS) on a single map.
- NSSL MRMS Web Tools [Internal NOAA - VPN Required]
- MRMS Experimental Product Viewer: The Experimental Product Viewer has similar functionality to the Operational Product Viewer except that it displays products from the developmental MRMS system at NSSL (known as vMRMS). Because of the experimental nature of the products, the access is limited to NSSL and NOAA users only, along with all the other tools listed below. It displays both the vMRMS and OPS data together for validation of both the products under development and in later phases of on-boarding new versions of MRMS to NCO. The archive for the experimental viewer goes back up to three years.
- MRMS Gauge vs. Radar Comparison: The Gauge vs. Radar Comparison interface represents the cornerstone of the MRMS QVS and is the primary tool that NSSL uses to assess QPE performance both in real-time and for archive events up to three years in the past. It provides direct comparisons to rain gauges both from MADIS and CoCoRaHS for hourly and daily accumulation periods and allows a wide range of options for filtering gauge observations. It provides overall performance metrics based on the collocated gauge/QPE pairs and allows the user to see which quality control flags are assigned to individual gauges at the hourly scale. It also provides the option for the user to download the filtered tabular data for further analysis.
- MRMS 3-D Mosaic Cross-Sections: The MRMS 3-D mosaic cross-section tool has existed for at least ten years as a way to visualize the vertical structure of the reflectivity data, and with V12 it has been expanded to include the new dual-pol 3-D mosaics.
- Radar Reflectivity Comparison Tool (RRCT): The RRCT provides a visual depiction of the relative bias in both reflectivity and differential reflectivity between adjacent radars by looking at volumes in space sampled by overlapping radar coverage. The overall bias of a single radar is estimated based on a long term average of comparisons between all its neighboring radars. It is not an estimate of absolute calibration of a single site but can provide supporting evidence that biases may be present in Z or ZDR that are impacting QPE and other derived products.
