Improvements to the Multi-Radar Multi-Sensor (MRMS) Quantitative Precipitation
Estimation (QPE) Product Suite
Steven Martinaitis, University of Oklahoma/CIMMS and NOAA/NSSL, Norman, OK
Jian Zhang, NOAA/NSSL
Kenneth Howard, NOAA/NSSL
The radar mosaics and quantitative precipitation estimation (QPE) products continue to evolve in the Multi-Radar Multi-Sensor (MRMS) system. The research and scientific advancements conducted by the National Severe Storms Laboratory (NSSL) will provide more accurate coverage and estimation of precipitation at a high spatiotemporal resolution (1-km, 2-min) to the National Weather Service (NWS) and other end-users. This presentation will focus on the current MRMS QPE updates (version 12.0) that are being installed and tested at the National Centers for Environmental Prediction (NCEP) Central Operations (NCO). Highlights of the MRMS QPE version 12.0 update include the following: mosaicked synthetic QPE utilizing dual-polarization variables, the first phase of a multi-sensor merged QPE product, and the evaporation correction of instantaneous precipitation rates. Other updates to the MRMS QPE product suite include improvements with handling beam blockage, hole-filling techniques to minimize data voids, radar quality index (RQI) calculations, gauge quality control advancements, and incorporating additional low tilts from the Supplemental Adaptive Intra-Volume Low-Level Scan (SAILS) radar upgrade. A look into the future of MRMS QPE through 2020 will also be presented.