Are Storm Characteristics the Same When Viewed Using Merged Surface Radars or a Merged Satellite Product?

Abstract High-resolution datasets offer the potential to improve our understanding of spatial and temporal precipitation patterns storm structures. The goal this study is evaluate similarities differences object-based characteristics as observed using space- or land-based sensors. Method Object-based Diagnostic Evaluation (MODE) Time Domain (MTD) used identify track objects in two high-resolution merged datasets: Integrated Multisatellite Retrievals for Global Precipitation Measurement (IMERG) final product V06B gauge-corrected ground-radar-based Multi-Radar Multi-Sensor (MRMS) quantitative estimations. Characteristics associated with landfalling hurricanes were also examined a separate category storm. results reveal that IMERG MRMS agree reasonably well across many characteristics. However, there are some discrepancies statistically significant. storms more concentrated, smaller areas higher peak intensities, which implies flash flood risks storms. On other hand, can travel longer distances volume precipitation, risk riverine flooding. Agreement between faster-moving terms averaged intensity. Finally, indicates average intensity during hurricane’s lifetime. non-hurricanes, opposite result was observed. This likely related having resolution; monitoring from viewing angles, leading different signal saturation properties compared IMERG; and/or dominance droplet aggregation effects over evaporation at lower altitudes.