Name: Joshua Gebauer Title: Evaluating the Impact of Rapid-Scan Radar Data on Dual-Doppler Vertical Velocity Retrievals Location: NWC 5600 Date: 05/03/2019 Time: 3:00 PM Series: Convective Meteorology (Mesoscale Dynamics) Abstract: Vertical velocity is the most difficult wind component to retrieve from dual-Doppler analysis, as radial velocities typically poorly capture the vertical component of the wind. Prior […]
Name: Rachel Miller Title: Idealized Simulations of the 25-26 June 2015 Kansas MCS during PECAN Location: NWC 5600 Date: 2019/04/26 Time: 3:30 PM Series: Convective Meteorology (Mesoscale Dynamics) Abstract: The Plains Elevated Convection at Night (PECAN) Experiment was designed to study nocturnal convective initiation (CI) and maintenance of mesoscale convective systems (MCSs). On June 26, 2015 […]
PhD student: Mauricio Ilha de Oliveira Friday, April 26, NWC 5600, 3:00pm Evolution of low-level updraft and three-dimensional vorticity during tornadogenesis in an idealized supercell simulation Abstract: Among all the hazards inflicted by severe convective storms, tornadoes have the potential to cause the most extreme devastation. Despite large advances in our knowledge of the […]
Abstract: A uniform spatial localization for all scales is commonly applied in the ensemble-based data assimilation (DA) systems to treat sampling errors. Early studies suggest that the optimal effective localization length for the large scale is broader than that for the small scale.
With NEXRAD now approaching the 30-year mark since its installation, intense study has been underway on designing a replacement national weather radar system. One system design framework—a multifunction phased array radar (MPAR) system—is designed to meet the needs of several end users simultaneously, including NOAA, FAA, DoD, and DHS. More recently, a weather-only radar system with update times on the order of one minute has been investigated.
Using Machine Learning Applications and HREFv2 to Enhance Hail Prediction for Operations Convective Meteorology (Mesoscale Dynamics) Amanda Burke April 12, 2019 3:00 pm/ NWC 5600 Abstract: Severe hail results in, on average, more than a billion dollars of damage within the continental United States each year. Thus, timely and accurate operational hail forecasts are vital […]
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 […]
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 […]