Marcus Johnson – April 5
Effects of the Representation of Rimed Ice in Bulk Microphysics Schemes on Polarimetric Signatures Marcus Johnson Friday, April 5th 3:00pm/NWC 5600 Abstract: Many flavors of multi-category, multi-moment bulk microphysics schemes (BMPs) are available for storm-scale modeling and have various treatments of rimed ice. In this study, we compare three two-moment schemes available in the WRF model […]
Casey Griffin – March 29
High-Temporal Resolution Observations of Tornadoes Using the Atmospheric Imaging Radar Casey Griffin Friday, March 29th 3:00pm/NWC 5600 Advisors: Dr. Robert Palmer and Dr. David Bodine Phased array radars provide flexible scanning strategies and high-temporal resolution data, which is particularly useful for studying rapidly evolving features, like tornadoes, which have advective timescales of 10 s or […]
Amanda Murphy-March 15
A number of novel techniques to examine polarimetric radar data collected via PPI scans in a time-height format have been developed in recent years. Using primarily polarimetric radar data collected by WSR-88D radars, techniques such as quasi-vertical profiles (QVPs), range-defined quasi-vertical profiles (RD-QVPs), and column vertical profiles (CVPs) have been used to investigate the vertical structure of precipitating systems such as winter storms, mesoscale convective systems, and landfalling hurricanes.
Samuel Degelia-March 8-Convective Meteorology (Mesoscale Dynamics) Seminar
Numerical weather prediction models often fail to correctly forecast convection initiation (CI) at night in the Great Plains. To improve our understanding of such events, researchers collected unique observations from thermodynamic and kinematic profilers as part of the Plains Elevated Convection at Night (PECAN) experiment. The assimilation of these observations can aid in analyses of key features that are not easily observed by conventional datasets This talk presents forecasts of a nocturnal CI event from PECAN in which assimilating the PECAN dataset improves the timing, location, and orientation of CI.