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Observations of Tropical Cyclone Vortex Rossby Waves and Their Role in Inner Core Rainbands
(2016-08-12)
Vortex Rossby Waves (VRWs) are hypothesized to exist in tropical cyclones (TCs), acting as an axisymmetrizing mechanism to the inner core TC flow and restored by the radial gradient of storm vorticity. In addition, they ...
Synoptic and Mesoscale Analysis of the 2015 Southern Great Plains Flash Pluvial
(2019-08)
During May and June of 2015, the Southern Great Plains (SGP) of the United States experienced numerous heavy rainfall and flooding events. The immense amount of rainfall (in excess of 80 cm) over a short period had tremendous ...
The Effects of Terrain on an Idealized Tornado using a Large-Eddy Simulation
(2019-08-01)
Tornado structure is known to be sensitive to the characteristics of near-surface inflow, which in turn is affected by inhomogeneities in surface features. Many observational studies such as VORTEX-SE have identified ...
Rawinsonde Observations of Supercell-Environment Interactions
(2016-12)
The Mesoscale Predictability Experiment (MPEX) in 2013 and Mini-MPEX in 2016 used mobile soundings to observe the near-storm environments of springtime Great Plains convection. Together, the projects collected over 100 ...
A Two Part Study in the Evaluation of Quantitative Precipitation Forecasts from Convection-Allowing Models
(2017-12)
Previous studies examining convection-allowing models (CAMs), as well as NOAA/Hazardous Weather Testbed Spring Forecasting Experiments (SFEs) have typically emphasized “day 1” (12-36 h) forecast guidance. These studies ...
Kinematics, Thermodynamics, and Microphysics of the 25-26 June 2015 Kansas MCS during PECAN
(2018-05)
This case study analyzes a nocturnal mesoscale convective system (MCS) that was observed in northeast Kansas as part of the Plains Elevated Convection at Night (PECAN) field experiment on 25-26 June 2015. Over the course ...
Understanding the Features and Mechanisms of the Great Plains Low-Level Jet in CMIP5 Models
(2016-12)
The Great Plains low-level jet (GPLLJ) is an important driver of precipitation and severe weather outbreaks over the U.S. Great Plains during the spring and summer. Therefore, it is extremely important that features of the ...
A Comparison of Hybrid-4DEnVar and Hourly Hybrid-3DEnVar Assimilation of Tail Doppler Radar Observations on the Prediction of Rapidly Evolving Hurricanes
(2019-08-01)
Beginning in the summer of 2017 the National Weather Service upgraded the operational Hurricane WRF (HWRF) to a continuously cycled Gridpoint Statistical Interpolation (GSI) based, 6-hourly, Hybrid 3-dimensional (3D) ...
South Pacific Atmospheric Internal Variability and Its Role in El Niño-Southern Oscillation
(2018)
Accurate long-range seasonal prediction of the El Niño-Southern Oscillation (ENSO) phenomenon is of critical importance to predict regional and global climate anomalies. The overarching goal of this work is to seek the ...
A Sub-daily Severe Weather Climatology and Its Implications for Forecasting
(2017-05)
While there has been an abundance of research dedicated to the seasonal climatology of severe weather, very little has been done to study hazardous weather probabilities on smaller scales. Using a similar process to the ...